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Up: A catalogue of high-mass binaries


3 Remarks on some individual objects

We wish to emphasize here that some sources listed in this catalogue are still uncertain. They need to be regarded with caution in view of many further work necessary to be done. Some sources are tentatively classfied as massive X-ray binaries due to their X-ray transience and hard X-ray spectra. No counterpart at other bands has been found or no pulse period has been detected, or both. Also, the compact object in some weak or soft X-ray sources may be a white dwarf instead of a neutron star. If this is the case, they should be excluded from this catalogue.

Finally, we would like to make some remarks on several individual sources. We can't make sure whether these sources belong to HMXBs or not. The following three sources are listed in our catalogue, although some doubt has been reported in the literature on the nature of the high-mass X-ray binary.

1WGA J 0648.0-4419: The weak X-ray source with a pulsation of 13 s was discovered by Israel et al. (1997) from ROSAT PSPC data. They believed that the system contained a hydrogen-depleted subdwarf O6 star and most likely a neutron star. But Bisscheroux et al. (1997) suggested the compact companion is a white dwarf star instead of a neutron star, mainly due to the ultrasoft spectrum of the X-ray source and the very close resemblance of the X-ray spectrum and luminosity with that of the soft intermediate polars.

1E 1024.0-5732: The source was discovered with Einstein Observatory. Caraveo et al. (1989) suggested that a highly reddened O5 star was the most likely optical counterpart, and therefore proposed the system was a HMXB. The source was listed in the previous catalogue. New optical and X-ray data, however, favour that the system contains a Wolf-Rayet star and an O-type star (Mereghetti et al. 1994; Reig 1999). The origin of the X-rays from this source is explained by the colliding wind binary model (Reig 1999).

1E 1048.1-5937: Although the source was listed in van Paradijs's catalogue, the system can not be confirmed to be a HMXB or a LMXB. The compact star belongs to the "anomalous" X-ray pulsars, which are thought now to be related to the magnetars. Mereghetti et al. (1998) argued that if it has a companion this star must be either a white dwarf or a helium burning star instead of a main-sequence companion.

The following two sources are not listed in our catalogue, although some authors argued that the sources are Be/X-ray binaries. GRS 1915+105: The source was listed in van Paradijs' catalogue of low-mass X-ray binaries (LMXBs). Its compact is well accepted as a black hole candidate. Mirabel et al. (1997) argued the system was a Be/X-ray binary according to its K-band infrared spectra. On the other hand, most characteristics are consistent with a LMXB. Therefore, we prefer to consider the source to be a LMXB as before.

1WGA J 1958.2+3232: Israel et al. (1998) discovered $\sim$ 12 min X-ray pulsations in this source. Further spectral observations of the optical counterpart made Israel et al. (1999b) conclude that the X-ray source is a likely new accreting neutron star in a Be/X binary system. Negueruela et al. (2000), however, found the optical spectrum is dominated by emission lines from an accretion disk and argued that the observed X-ray and the optical characteristics are consistent with the object being an intermediate polar.

PSR B1259-63/SS 2883 is also not listed in our catalogue. The source was discovered by Johnston et al. (1992a) to be a radio pulsar in a highly eccentric orbit around the massive star SS 2883 (Johnston et al. 1992b), with an eccentricity of 0.869. The pulsar rotation period is 47.76 ms and the orbital period is 1236.79 days. X-ray observations with ROSAT, ASCA and CGRO (Cominsky et al. 1994; Greiner et al. 1995; Kaspi et al. 1995; Grove et al. 1995; Tavani et al. 1996) showed X-ray luminosity of 1033-1034, assuming a distance of 2 kpc. No X-ray pulsation was detected. Optical observations of SS 2883 exhibited strong H-Balmer emissions and the star is of spectral type of about B2e, indicating its mass to be 10 ${M}_\odot$ and its radius 6 ${R}_\odot$ (Johnston et al. 1994). The system is the only known binary where a radio pulsar is observed to interact with gaseous material from a Be star. It may be the evolutionary missing link connecting the radio pulsars to the X-ray emitting Be binaries (for recent simple review, see Tavani & Arons 1997).

Note added in proof: While the paper was under referee, Haberl F. and Sasaki M. (2000, A&A 359, 573) reported that there are more than 20 new Be/X-ray binary candidates in the SMC, which are not listed in our catalogue.

Acknowledgements
QZL acknowledges the financial support from K.C. Wong fellowship of Chinese Academy of Sciences. This work is partially supported by The Netherlands Organization for Scientific Research (NWO) through Spinoza Grant 08-0 to E.P.J. van den Heuvel and by the National Project for Fundamental Research by the Ministry of Science and Technology of China (973 Project).


   
Table 1: High-mass X-ray binaries

Name(s)
type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
J 0032.9-7348   00 32 56.1 *1 15.3, - -, - - 0.2  
    -73 48 19   Be, - -    
R x 12.9 $^{\prime\prime}$ 304.7, -43.2 [657] [354] [354]  
             
Pos.: [255]; in SMC: [354]; very strong emission lines: [657]; another early-type star within error circle: [657].
J0049-732 P 00 49 29.6     0.04  
    -73 10 56       9.1321
As x 5.5 $^{\prime\prime}$ 303.1, -43.9     [327] [327]
             
Pos.: [255]; in SMC: [327]; likely a Be: [255].
J0049-729 TP 00 49 02.5 Be star   0.5-9  
J 0049.1-7250   -72 50 52   Be, - -   74.676
AS, R, X x 13.7 $^{\prime\prime}$ 303.2, -44.3 [657]   [354] [132, 790]
             
Pos.: [255, 355]; in SMC: [354]; two Be stars within error circle: [104]; high variability: [355, 354].
0050-727 T 00 50 19.5 *4 $\sim$ 14, -0.3, -1.0 <1-5  
SMC X-3   -72 42 24   O9 III-Ve, 0.03    
A, H, S, X o 3 $^{\prime\prime}$ 302.9, -44.7 [95] [7, 146] [95]  
             
Pos.: [63]; transient: [95, 96]; projected rotational velocity $v_{\rm r}{\rm sin} i \sim 200~{\rm km~s}^{-1}$: [146].
J 0050.7-7316 P 00 50 44.7 Be star 15.44, -0.03, -0.95 0.16 1.416
J0051-733   -73 16 05   Be, - - (0.7-10 keV) 323
R, AS o 1 $^{\prime\prime}$ 303.0, -43.8 [141] [104, 141] [788] [104, 788]
             
Pos.: [104]; in SMC: [141]; orbital period 0.708 days: [118, 616]; orbital solution: [104].
J0051-722 TP 00 50 55.8 Be star 14.9, - -, - - 2.6 120
    -72 13 55   Be   91.1
X, R, B x 10 $^{\prime\prime}$ 303.0, -44.9 [657] [657] [424] [334, 461]
             
Pos.: [132]; in SMC: [461]; X-ray pulsation: [132, 334, 424]; strong emission lines: [657]; opt. spectrum: [657].
J 0051.8-7231 TP 00 51 53.0 *2   0.01-9  
2E 0050.1-7247   -72 31 45   Be, - -   8.9
E, X, R, B x 11 $^{\prime\prime}$ 302.9, -44.6 [657]   [354] [330]
             
Pos.: [354]; in SMC: [354]; X-ray activity: [354]; neither AV111 nor star 1 is the opt. counterpart: [657].
J 0051.9-7311 T 00 51 51.4 B[e] star 14.4, - -, - -    
SMC 25   -73 10 38   B[e], - -    
R x 302.9, -43.9 [141] [141]    
             
Pos.: [141]; unassociated with the supernova remnent DEM 60: [141].
J 0052.1-7319 TP 00 52 13.9 SMC SC6 99923 14.667, -0.005, - - 0.024-4.7  
    -73 19 13   Be, - -   15.3
E, X, R x 1.9 $^{\prime\prime}$ 302.8, -43.8 [702] [702, 332] [399] [399]
             
Pos.: [255]; in SMC: [399]; highly variable X-rays: [353]; strong H$\alpha$ emis. line: [332]; $P_{\rm orb}$ likely between 600-700 d: [702].
J 0052.9-7158 TU 00 52 54.0 Be star 15.46, -0.07, -0.99 2  
SMC 32   -71 58 08   Be, - - (0.15-2.4 keV)  
R x 302.8, -45.1 [141] [141] [141]  
             
Pos.: [141]; unlikely the supernova remnant IKT4: [141]; highly variable in X-rays: [141]; trans. supersoft source: [141].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
0053-739 T 00 52 53.1 *5 16.0, -0.3, -0.5 < 1-7  
SMC X-2   -73 57 19   B1.5 Ve, 0.03    
A, S o 302.6, -43.4 [95] [506] [95]  
             
Pos.: [506]; transient: [95, 96]; southern component of a close pair: [506]; $v_{\rm r}\sin i \sim 200~{\rm km~s}^{-1}$: [146].
0053+604   00 53 40.3 $\gamma$ Cas 1.6-3.0, -0.15, -1.08 5-11  
    +60 26 47   B0.5 Ve, 0.05    
U, A, H, S, AS, B o 123.6, -2.1 [177] [489] [63]  
             
Pos.: [63]; X-ray spectrum: [219, 505, 542]; UV observations: [51, 170, 261, 273, 455]; variable Be star: [235, 456, 739, 769]; radial-velocity variations: [343]; $v_{\rm r}\sin i \sim 300-500~{\rm km~s}^{-1}$: [304, 310, 489]; system velocity: [721]; comparison with X Per: [489, 764]; radio/mm obs.: [179, 747]; polarimetry: [101]; optical interferometry H$\alpha$ envelope: [503, 687]; non-radial pulsations: [787]; wind structure: [746]; long-term periodic variability in UV absorption: [681]; a WD sys.: [249]; multiwavelength obs.: [292, 645a]; ISO IR spe. and envelope structure: [291].
J 0053.8-7226 TP 00 53 55.0     1.4 139
0053-724   -72 26 47   B1V   46.63
X, R x 10 $^{\prime\prime}$ 302.7, -44.7     [132] [132, 425]
             
Pos.: [132]; in SMC: [132]; X-ray pulsations: [132, 425]; possibly a Be star [425]; spectral type: see [513].
J0054-720 TP 00 54.6     3.8  
    -72 04       169.3
X, B x 10 $^{\prime\prime}$ 302.6, -45.0     [428] [428]
             
Pos.: [428]; most likely a Be/X-ray system in SMC: [429].
J0055-724 TP 00 54 56.17 Be star 15.28, -0.04, -0.78 1 65
J 0054.9-7226   -72 26 27.6   B0-B1III-V, 0.06-0.28   58.969
X, B, R, E x 0.1 $^{\prime\prime}$ 302.6, -44.7 [621, 657] [104, 279, 621] [458] [429, 458, 610]
             
Pos.: [104]; in SMC: [458]; orbital period 14.26 days: [104]; very strong emission lines: [657]; consistent with Einstein source 2E 0053.2-7242: [610].
J0058-72.0 P 00 57 48.4     0.1  
J0058-7203   -72 02 42     (0.7-10 keV) 280.4
AS, R x 7.9 $^{\prime\prime}$ 302.2, -45.0     [788] [788]
             
Pos.: [255]; HMXB in SMC (?): [255].
J 0058.2-7231   00 58 12.7 Be star 15.0, - -, - -    
    -72 30 45   Be, - -    
R x 302.2, -44.6 [621] [621]    
             
Pos.: [621]; very weak X-ray emission in SMC: [621].
J 0059.2-7138 TUP 00 59 11.3 Be star 14.1, 0.11, - - 3  
    -71 38 45   B1IIIe, 0.03 (0.2-2 keV) 2.7632
R, E x 2.8 $^{\prime\prime}$ 302.1, -45.4 [650] [650] [299] [299]
             
Pos.: [255]; in SMC: [299]; strong H$\alpha$ emis. line: [299]; two components X-ray spe.: [299]; extremely ultrasoft X-ray sp.: [299].
J 0101.0-7206 T 01 01 01.1 Be star   0.1  
    -72 06 57   Be    
R, E x 2.8 $^{\prime\prime}$ 301.9, -45.0 [657]   [354]  
             
Pos.: [354]; in SMC: [354]; very strong H$\alpha$ emission line: [657].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
J0103-722 P 01 03 13.9 Be star 14.8, 0.089, - - 0.01-0.1  
J 0103.2-7209   -72 09 14.0   O9-B1(III-V), 0.23 (0.2-2 keV) 345.2
R, A, B o 0.1 $^{\prime\prime}$ 301.6, -44.9 [300] [104, 300] [300, 334] [334]
             
Pos.: [104]; in SMC: [334]; consistent with the known supernova remnant SNR 0101-724 and the Einstein source 1E  0101.5-7225: [300]; strong H$\alpha$ activity in the BeppoSAX error circle: [334].
0103-762 T 01 07 45.1 Be star 17, - -, - - 2.3  
0107-750   -75 00 38   Be, 0.03    
H, V, R o 301.9, -41.1   [698] [781]  
             
Pos.: [698]; variable X-ray source: [698]; member SMC: [698].
J0105-722 TP 01 05 08.9     0.1  
J 0105.1-7211   -72 11 44       3.343
AS, R x 6.6 $^{\prime\prime}$ 301.4, -44.9 [203]   [203] [789]
             
Pos.: [255]; in SMC: [789]; containing six sources: [203]; likely a Be/X-ray binary: [203]; multiwavelenth obs.: [203].
J 0106.2-7205   01 06 15.1 Be star 16.7, - -, - - 0.005  
    -72 05 25   B2-B5 III-Ve, 0.05-0.25 (0.2-2 keV)  
R x 15 $^{\prime\prime}$ 301.3, -45.0 [300] [300] [300]  
             
Pos.: [356]; consistent with the known supernova remnant SNR 0104-72.3 in SMC: [300]; opt/IR obs.: [605].
J 0111.2-7317 TP 01 11 08.4 Be star 15.32, 0.08, - - 15  
    -73 16 46   B0-2III-Ve, - -   31.0294
X, AS, C o 1 $^{\prime\prime}$ 301.0, -43.7 [113] [113] [87] [86]
             
Pos.: [113]; in SMC: [86]; optical outbursts: [113]; very strong emission lines: [332].
0114+650 P 01 14 41.8 V662 Cas 11.0, 1.2, 0.1 4 11.6
    +65 01 32 LS I+65$^\circ$010 B0.5 Ib, 1.4   10008
A, S, X o 3 $^{\prime\prime}$ 125.7, +2.6 [177] [3, 148] [63] [148, 210, 785]
             
Pos.: [63]; X-rays: [326, 619, 785]; the longest pulsation period: [133]; opt. spectra: [3, 148, 446, 421]; $v_{\rm r}\sin i \sim 45~{\rm km~s}^{-1}$: [3]; opt. polarimetry: [44]; review multi-wavelength behaviour: [231]; a magnetar: [416]; astrophys. parameters: [578]; opt. photometry: [680].
0115+634 TP 01 15 13.8 V635 Cas 14.5-16.3, 1.4, 0.3 <2-350 24.3
    +63 28 38   B0.2V, 1.7   3.61
U, M, H, S, C, X o 125.9, +1.0 [347] [345, 473, 513] [63] [508, 569]
             
Pos.: [347]; X-ray outbursts: [559, 590, 597, 673, 697]; recurrence time 3 yr (?): [770]; X-ray spectrum: [590, 765]; X-ray cyclotron line: [272, 511, 673]; opt. pre-outburst behaviour: [393, 473]; long-term opt. phot.: [473]; opt. spectra: [309, 706]; $v_{\rm r}\sin i \sim 365~{\rm km~s}^{-1}$: [309]; multiwavelength obs. during an outburst: [516].
0115-737 P 01 15 45.6 Sk 160 13.3, -0.14, -0.98 0.5-57 3.89
SMC X-1   -73 42 22   B0 Ib, 0.03   0.71
U, M, A o 3 $^{\prime\prime}$ 300.4, -43.6 [609] [312, 753] [63] [508, 566, 623]
             
Pos.: [95]; highly variable X-ray source: [629]; pulse timing & X-ray orbit: [566]; aperiodic X-ray variability: [11]; long-term X-ray obs.: [54, 247]; X-ray sp. [762, 765]; opt. lt crv. & system parameters: [375, 417, 689, 725]; opt. spectrum & orbit: [312, 584]; $v_{\rm r}\sin i \sim 200~{\rm km~s}^{-1}$: [312]; UV obs.: [56, 262, 714]; magnetic field strength: [415]; orbital decay: [412].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
J 0117.6-7330 TP 01 17 41.4 Be star 14.19, -0.07, - - 10  
    -73 30 49   B0.5IIIe, 0.03   22.07
C, R x 0.6 $^{\prime\prime}$ 300.4, -43.5   [90, 649] [439] [439]
             
Pos.: [255]; in SMC: [98]; X-ray outburst: [98]; IR excess and strong H$\alpha$ emission: [90, 112]; projected rotational velosity 145 km s-1: [649]; mass of the Be star 18 ${M}_\odot$: [649]; opt. phot. & spectroscopy: [649]; soft X-ray spectrum: [98]; hard X-ray spectrum: [439]; black hole candidate: [98].
J0146.9+6121   01 43 32.6 LS I+61$^\circ$235 11.33, 0.82, -0.39 1-3  
    +61 06 26   B1Ve, 0.87 (0.1-2.4 keV) 1404.2
R, AS, X, B o 2 $^{\prime\prime}$ 129.2, -1.2 [267] [143, 410, 579, 640] [499] [254]
             
Pos.: [267]; in open cluster NGC 663: [438]; $v_{\rm r}\sin i \sim 250~{\rm km~s}^{-1}$: [640]; X-ray obs.: [480]; new X-ray outburst: [254]; physical parameters and V/R veriability: [579].
0236+610   02 36 40.6 LS I+61$^\circ$303 10.7, 0.8, -0.3 0.2 26.45
    +61 00 54 V615 Cas B0e, 0.75 (0.2-5 keV)  
E o, r 135.7, +1.1 [70, 267] [180, 308, 600] [48] [677]
             
Pos.: [242]; X-ray source: [48]; radio outbursts: [677, 678]; four-year modulation radio outbursts: [185, 243, 534]; VLBI radio jet: [467, 679]; optical light curve: [472, 532, 533]; opt. spectra: [5, 308]; orbital solution: [308, 463]; $v_{\rm r}\sin i \sim 200~{\rm km~s}^{-1}$: [144]; system velocity: [721]; long-term optical obs.: [242, 423]; IR obs.: [157, 303]; distance: [216, 653]; UV obs.: [294, 307, 308, 445]; wind structure: [746]; related to $\gamma$ source CG 135+1(?): [240, 276]; simultaneous X-ray/radio obs.: [268]; black hole candidate: [567]; long-term radio obs.: [572]; multiwavelength obs.: [652]; orbital period detected in photometry, X-ray and H$\alpha$ emission line: [535, 536, 791].
0331+530 TP 03 31 14.9 BQ Cam 15.1-15.4, 1.6-2.3, - - <0.5-1250 34.25
    +53 00 24 O8.5Ve, 1.9   4.4  
V, T, Exo o 146.1, -2.2 [381] [128, 290, 513] [655, 683] [508, 655, 771]
             
Pos.: [381]; X-ray outbursts: [655, 683, 771]; X-ray obs.: [444]; rapid X-ray variability: [38]; X-ray cyclotron line: [443]; X-ray pulse phase sp.: [705]; optical id.: [42, 381]; optical spectrum: [661]; $v_{\rm r}\sin i \sim 150~{\rm km~s}^{-1}$: [128]; system velocity: [721]; H$\alpha$ emission: [338]; IR obs.: [106]; wind structure: [746]; tilt between orbital and equatorial planes: [514]; QPO: [669].
0352+309 P 03 52 15.1 X Per 6.0-6.6, 0.29, -0.82 <9-37 580?
    +30 54 01   B0 III-Ve, 0.4   835
U, M, A, H, S o 163.1, -17.1 [64] [311, 434, 489, 639] [63] [306, 508]
             
Pos.: [63]; X-rays: [591, 754]; X-ray sp.: [765]; optical id.: [71]; long-term optical record: [298, 422, 494]; reported 580 day period unlikely to be orbital: [306, 311, 548]; disappearance emission lines: [520]; system velocity: [721]; $v_{\rm r}\sin i \sim 250-400~{\rm km~s}^{-1}$: [306, 489, 761]; UV obs.: [43, 261]; stellar parameters: [190]; comparison with $\gamma$ Cas: [489, 764]; opt. polarimetry: [396]; envelope structure: [682]; photometry and polarimetry obs. during disc loss: [595]; fundamental parameters: [434]; multiwavelength study: [594]; orbital period of 250.3 d: [Delgado-Marti H., et al., 2000, ApJ (submitted)].
J0421+560 T 04 19 46.0 CI Cam 9.25, 1.0, -0.4 2000  
    55 59 24   - -, 0.8    
X, B, C, AS x 50 $^{\prime\prime}$ 149.2, +4.1   [100a, 323] [40, 523]  
             
Pos.: [523]; X-ray outbursts: [643]; multi-wavelength obs.: [40]; optical outbursts: [593]; radio obs.: [287]; radio position: [285]; likely a black hole candidate: [40]; B[e]: [40]; an unusual symbiotic-type X-ray binary (?): [220]; distance $\geq 2$ kpc: [40]; sgB[e] star: [100]; IR spe.: [100]; opt./IR/radio obs.: [100a]; long-term UBVRIJHK obs.: [41a]; X-ray/opt. obs.: [219a].
J0440.9+4431 P 04 40 59.9 BSD 24-491 10.78, 0.61, -0.36 1  
    44 31 51   B0V-IIIe   202.5
R, X x 17 $^{\prime\prime}$ 159.8, -1.3 [142] [500] [577] [577]
             
Pos.: [500]; distance 3.2 kpc: [500]; optical spe.: [500].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
J 0501.6-7034   05 01 23.9 Be star 14.5, -0.07, - -    
CAL 9   -70 33 33   B0e, - -    
E, R x 2.9 $^{\prime\prime}$ 281.9, -34.5 [618] [618]    
             
Pos.: [612]; in LMC: [618]; opt. cpt. HV 2289: [618]; IUE ultraviolet obs.: [620].
J 0502.9-6626 TP 05 02 51.6 Be star 14.22, -0.10, - - 5.7  
CAL E   -66 26 25   B0e, - -   4.0635
E, R x 1.2 $^{\prime\prime}$ 277.0, -35.4 [618] [617] [619] [619]
             
Pos.: [612]; in LMC: [618]; highly variable X-ray emission: [618]; IUE ultraviolet obs.: [620].
J 0512.6-6717   05 12 41.8        
    -67 17 23        
R x 40 $^{\prime\prime}$ 277.8, -34.3        
             
Pos.: [250]; a HMXB in LMC (?): [250]; weak source, hard X-ray spectrum: [250].
J 0516.0-6916 T 05 16 00.1 star 2 15.0, -0.1, -0.9 0.07  
    -69 16 09   B1e    
R x 7.3 $^{\prime\prime}$ 280.1, -33.6 [141] [141] [141]  
             
Pos.: [612]; LMC member: [141].
J 0520.5-6932 T 05 20 30.3 Be star 14.4, - - , - -    
    -69 32 04   O8e, - -    
R x 16.6 $^{\prime\prime}$ 280.3, -33.2 [618] [618]    
             
Pos.: [250]; in LMC: [618]; IUE ultraviolet obs.: [620]; not detected with Einstein: [618].
0521+373   05 19 10.7 HD 34921 7.51, 0.14, -0.86 1  
    +37 37 44 SAO57950 B0 IVpe, 0.42    
U, H o 170.0, +0.7 [646] [78, 555, 599] [215, 781]  
             
Pos.: [646]; hard X-ray spectrum: [555]; UV/opt./IR obs.: [555, 599]; IR spe.: [100]; unclB[e] star: [100].
J 0529.8-6556 TP 05 29 48.4 GSC 8891.0213 B=14.5, R=13.3 0.17  
    -65 56 51   B2III-Ve, - -   69.5
R x 8 $^{\prime\prime}$ 275.9, -32.9 [253] [253] [253] [253]
             
Pos.: [253]; LMC member: [253]; opt. spectrum: [253].
053109-6609.2 TP 05 31 09     1 25.4
    -66 09 12   Be?, 0.1   13.7
Exo, SL, B, R x 10 $^{\prime\prime}$ 276.2, -32.7   [265] [265] [165]
             
Pos.: [530]; in LMC: [265]; hard X-ray spectrum: [265]; X-ray outburst: [75]; not detected with Einstein: [265]; optical cpt. probably Be star: [265]; orbital period between 4 and 40 days, mostly 25.4 days: [165].
J 0531.5-6518   05 31 36.1        
    -65 18 16        
R x 18.8 $^{\prime\prime}$ 275.1, -32.7 [250]      
             
Pos.: [250]; HMXB in LMC: [250].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
0532-664 P 05 32 47.3 Sk-Ph 14.0, -0.1, -1.1 <3-60 1.40
LMC X-4   -66 24 13   O7 III-V, 0.1   13.5
U, M, A, H, AS, G, R o 2 $^{\prime\prime}$ 276.3, -32.5 [93] [280, 365, 431] [63] [365, 508]
             
Pos.: [63]; X-ray orbital parameters: [365, 411, 553]; X-ray eclipses: [413, 756]; 30 day period X-ray: [400]; X-ray spectrum: [665, 765]; rapid X-ray variability: [38]; X-ray flare: [553]; opt. light curve: [92, 271, 326]; opt. spectrum & radial velocity curve: [314]; $v_{\rm r}\sin i \sim 170~{\rm km~s}^{-1}$: [314]; opt. 30 day period: [271, 326]; precessing-disk model: [271]; UV obs.: [56, 714]; UV/X-ray obs.: [738]; orbital decay: [607, 780].
J 0532.4-6535   05 32 25.3 RGC 36 J=11.9, H=11.1, K=10.7 0.01  
    -65 35 09     (0.1-2.4 keV)  
R x 17.4 $^{\prime\prime}$ 275.4, -32.6   [575] [250]  
             
Pos.: [250]; hard X-ray spectrum: [250]; Be star in LMC: [250].
J 0532.5-6551 V 05 32 32.6 Sk-65 66 12.3, - -, - - 0.03  
    -65 51 40.8   OB (0.1-2.4 keV)  
R o 275.7, -32.6 [609] [609] [253]  
             
Pos.: [609]; in LMC: [253]; long-term X-ray variation [253]; Black hole candidate or a NS: [253].
J 0535.0-6700 T 05 35 05.9 RGC 28 18.1, - -, - - 0.04 241?
    -67 00 16   Be?, - - (0.1-2.4 keV)  
R x 4 $^{\prime\prime}$ 277.1, -32.2 [575] [575] [250] [575]
             
Pos.: [250]; in LMC: [250]; IR photometry: [575]; Be/X-ray system: [250].
0535-668 PT 05 35 42.4 *Q 12.3-14.9, 0.1, -0.9 <0.01-180 16.7
0538-66   -66 53 39   B2 III-Ve, 0.1   0.069
A o 2 $^{\prime\prime}$ 276.9, -32.2 [89, 350] [89, 167, 431, 528] [63] [508, 636]
             
Pos.: [350]; in LMC: [348, 528]; X-ray outbursts: [348, 757]; X-ray pulsations: [637]; optical outbursts: [89, 126, 167, 636, 729]; long-term off states: [430, 528]; quiescent opt. phot. & spectroscopy: [126, 320, 641, 642, 709, 729]; very strong emission lines during outbursts: [89]; IR obs.: [8]; opt. polarimetry: [102]; UV obs.: [89, 295, 573]; wind structure: [746]; X-ray obs. during quiescence: [484]; accretion to magnetosph.: [130].
0535+262 TP 05 35 48.0 V725 Tau 8.9-9.6, 0.45-0.62, -0.54 <3-2800 111
    +26 17 18 HD 245770 O9.7IIIe, 0.8   104
U, A, H o 181.4, -2.6 [414] [225, 449, 653, 660] [63] [508, 561]
             
Pos.: [63]; transient: [509, 598]; long-term X-ray obs.: [561]; hard X-ray obs.: [108, 371, 585, 628]; 55.7 d orbit?: [754]; long-term optical record: [41, 660]; opt. phot.: [266, 634]; opt. spectr.: [4, 313, 319]; $v_{\rm r}\sin i \sim 300~{\rm km~s}^{-1}$: [313]; system velocity: [721]; multi-wavelength obs.: [164, 341]; X-ray/opt. relation: [436]; UV obs.: [164, 546, 784]; accretion model: [498]; wind structure: [746]; 1992 review: [230]; disc loss & renewal: [257]; IR spe. obs.: [99a]; distance: [653]; long-term opt./UV spe.: [99]; cyclotron line: [20, 372]; QPO during a giant outburst: [208].
J 0535.8-6530   05 35 53.8     0.5  
    -65 30 34     (0.1-2.4 keV)  
R x 13 $^{\prime\prime}$ 275.3, -32.3     [250]  
             
Pos.: [250]; likely a HMXB in LMC: [250].
0538-641 U 05 38 39.7 *1 16.7-17.5, -0.2, -0.6 <1.7-44 1.70
LMC X-3   -64 06 34   B3 Ve, 0.1    
U, M, A, H, F, X o 3 $^{\prime\prime}$ 273.6, -32.1 [716] [136, 431, 708] [63] [136]
             
Pos.: [38]; X-ray obs.: [349]; long-term X-ray obs.: [545]; rapid X-ray variability: [38]; X-ray spectrum: [665, 693, 759, 766]; 199 d X-ray period: [138, 665]; opt. lt crv.: [50, 730]; mass function: [136, 395, 525]; $v_{\rm r}{\sin} i \sim 130~{\rm km~s}^{-1}$: [136]; UV obs.: [139, 694, 695]; X-ray/UV/opt. obs.: [695]; near IR sp.: [137].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}$, $b^{\rm II}$ [FC]      
0540-697 U 05 40 05.5 *32 14.5, 0.29, -0.70 3-25 4.22
LMC X-1   -69 46 04   O7-9 III, 0.37    
U, M, A, H, X o 3 $^{\prime\prime}$ 280.2, -31.5 [135, 181] [47, 318] [63] [322]
             
Pos.: [63]; ultra-soft X-ray spe.: [759]; X-ray spe. & QPO: [184]; rapid X-ray variability: [38]; X-ray obs.: [349, 665]; mass function: [322]; $v_{\rm r}\sin i \sim 150~{\rm km~s}^{-1}$: [318]; UV obs.: [47, 322]; in He III region: [527]; opt. cpt. uncertainty (O7III or supergiant R148): [140].
J 0541.4-6936   05 41 22.2 Sk-69 271 12.01, 0.00, - -    
    -69 36 29   B2SG, - -    
R x 6.6 $^{\prime\prime}$ 280.0, -31.4 [612] [335, 603]    
             
Pos.: [612]; supergiant in LMC: [612].
J 0541.5-6833   05 41 37.1 LMC BI267 14.02, -0.03, -1.04    
    -68 32 32   OB0    
R x 4.5 $^{\prime\prime}$ 278.8, -31.4   [74]    
             
Pos.: [74]; LMC member: [612].
0544-665   05 44 15.6 *1 15.4, -0.20, -0.96 1.8  
    -66 34 59   B1 Ve, 0.1    
H o 3 $^{\prime\prime}$ 276.5, -31.4 [349] [431, 715] [349]  
             
Pos.: [38]; optical id. not completly certain: [715]; *1 member of LMC: [715].
J 0544.1-710 TP 05 44 06.3 Be star 15.33, 0.13, - - 0.14-0.36  
J 0544.1-7100   -71 00 50   Be, 0.32 (2-10 keV) 96.08
B, R, E x 3.3 $^{\prime\prime}$ 281.6, -31.0 [151] [151] [151] [151]
             
Pos.: [250]; in LMC: [151]; very hard X-ray spectrum: [151]; pronounced H$\alpha$ activity from a likely Be-type star: [151].
0556+286   05 52 44.3 HD 249179 9.2, - -, - - 1.1  
    +28 46 41   B5ne, - -    
H o 181.3, +1.9   [557, 698] [781]  
             
Pos.: [698]; Be star: [739].
J0635+0533 P 06 35 17.4   12.83, +0.98, - - 0.55  
    05 33 20.9   B2V-B1IIIe, 1.2   0.0338
B x 1$^\prime$ 206.1, -1.0 [352] [352] [352] [152]
             
Pos.: [352]; opt. emission line: [352]; within the error box of the GeV $\gamma$-ray source 2EG J0635+0521: [352]; distance $\sim 2.5-5$ kpc: [352].
J 0648.0-4419 P 06 48 04.6 HD 49798 8.27, -0.24, -1.18 0.03 1.55
    -44 18 54.4   sdO6, - -   13.1789
R, B x 10 $^{\prime\prime}$ 253.7, -19.1 [329] [344]   [329, 684]
             
Pos.: [768]; distance 650 pc: [329]; very soft X-ray spe.: [329]; ultraviolet spe.: [73]; likely a NS: [329]; compact being a WD(?): [49].
0726-260 TP 07 26 50.0 $\rm LS\,437$ 11.6, 0.3, -0.6 1.2-4.7 34.5
    -26 00 13   O8-9Ve, 0.6   103.2
U, A, E, H, R, X o 240.3, -4.1 [654] [515, 654] [743, 781] [131]
             
Pos.: [654]; distance 4.6 or 6.1 kpc: [124a, 515]; X-ray flare: [654]; opt./IR obs.: [515]; orbital and spin periods: [131].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}$, $b^{\rm II}$ [FC]      
0739-529   07 46 09.8 HD 63666 7.62, 0.02, -0.24 0.7  
    -53 12 28 SAO235515 B7 IV-Ve, - -    
H o 266.4, -13.7 [646] [293, 437, 518, 698] [781]  
             
Pos.: [698].
0749-600   07 55 27.7 HD 65663 6.73, 0.05, -0.25 0.7  
    -60 57 54 SAO250018 B8 IIIe, 0.09    
H o 274.0, -16.2 [646] [153, 154, 698] [781]  
             
Pos.: [698]; Be star: [739]; in open cluster NGC 2516: [153].
J 0812.4-3114 TP 08 12 28.4 LS 992 12.42, 0.41, -0.69 0.6 80
    -31 14 51   B0.5V-IIIe, - -   31.8851
R, X x 21 $^{\prime\prime}$ 249.6, +1.6 [500] [500] [500] [125, 577]
             
Pos.: [500]; distance 9.2 kpc: [500]; optical spectrum: [500].
0834-430 TP 08 34 10 star *D 20.4, - -, - - 30-300 110
    -43 00.6   B0-2 III-Ve, 4.0   12.3
Gr, R, K, G, C x 1$^\prime$ 262.0, -1.5 [334a] [334a] [239] [239, 773]
             
Pos.: [269]; more accurate pos. for epoch 2000: 08 35 55.4, -43 11 11.9 (o 1 $^{\prime\prime}$): [334a]; sequence X-ray outbursts: [774]; eccentricity 0.1<e<0.17: [774]; strong H$\alpha$ emission: [334a]; southern of two neighboring sources: [239, 440]; recurrent transient: [401]; distance 3-5 kpc: [334a]; not the same transient as MX 0836-42: [115, 453]; X-ray obs.: [16]; X-ray/opt. obs.: [39]; IR/opt obs.: [334a].
0900-403 P 09 00 13.2 HD 77581 6.9, 0.47, -0.51 2-1100 8.96
Vela X-1   -40 21 25 GP Vel B0.5 Ib, 0.7   283
U, M, A, H, B, X, AS, R o 263.1, +3.9 [213] [183, 495, 518, 717] [63] [162, 508, 711]
             
Pos.: [63]; X-ray sp.: [510, 891, 614, 765]; cyclotron line: [371]; pulse timing & X-ray orbit: [61, 62, 161, 162, 571, 696, 711]; X-ray eclipses: [213, 703]; limits on apsidal motion: [160]; rapid X-ray variability: [38]; orbital variation X-ray absorption: [251]; energy dependence pulse profile: [570]; opt. light curve: [374, 689]; long-term cycles (?): [559, 689]; opt. radial-velocity curve: [720, 726]; system velocity: [721]; $v_{\rm r}\sin i \sim 90-130~{\rm km~s}^{-1}$: [482, 689, 772]; UV obs.: [183, 357, 470, 546, 606]; high-resolution IUE obs.: [659]; opt. polarimetry: [173]; IR obs.: [232]; bow shock around the sys. [361]; polarization: [779].
J1008-57 TP 10 09 46 star 15.27, -1.66, - - 1200 135
    -58 17 32   $\rm O9-B1$, 1.9-2.0   93.5
C, R, AS, Exo x 15 $^{\prime\prime}$ 283.0, -1.8 [109] [109, 587] [663] [550, 635, 663]
             
Pos.: [550]; IR and optical spectral obs.: [109]; 260 days orbital period: [206]; distance 5 kpc: [109]; large IR excess: [109].
1024.0-5732 P 10 24 05.4 Wack 2134 12.7, 1.5, - - 1-10  
    -57 33 24 TH$\alpha$ 35-42 O5:, 1.8 (0.2-4.5 keV) 0.061
E o 6 $^{\prime\prime}$ 284.5, -0.2 [686] [81] [81] [81]
             
Pos.: [81]; no optical pulsations: [169]; emission line star: [739]; a Wolf-Rayet star+ O star sys. rather than a HMXB: [576].
1036-565   10 28 28.3 HD 91188 6.64, -0.10, -0.56 3.3  
4U1036-56   -56 49 14 SAO238130 B4 IIIe, - -    
A o 284.6, +0.7 [646] [221, 518] [743]  
             
Pos.: [698]; probably the same source as RX J 1037.5-5674: [500]; Be star: [739]; X-ray flare 1974 Nov.: [743]; periodic (2.924d) optical brightness variations reflect rotation of Be star: [27, 28]; IR spe.: [474].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}$, $b^{\rm II}$ [FC]      
J 1037.5-5647 P 10 37 35.2 LS 1698 11.3, 0.9, - - 0.17  
    -56 47 59   B0V-IIIe, 0.75   862
R x 21 $^{\prime\prime}$ 285.4, +1.5 [500] [500] [577] [577]
             
Pos.: [500]; distance 5.0 kpc: [500]; HD 91188 not the opt. cpt.: [500]; probably same source as 4U 1036-56: [500].
1048.1-5937 P 10 48 09.0     <0.1-1  
    -59 37 21       6.44
E x 9 $^{\prime\prime}$ 288.2, -0.5 [477]   [632] [124, 632]
             
Pos.: [477]; discovery: [632]; Be/X or LMXB (?): [124]; opt. phm. and sp. of possible counterparts: [477]; excluding Main-sequence companion: [479].
1118-615 PT 11 18 45.2 He3-640 12.1, 0.96, -0.30 0.1-70  
    -61 38 31   O9.5 III-Ve, 1.2   405
A o 292.5, -0.9 [339] [339] [63, 497] [508]
             
Pos.: [63]; X-ray transient: [187, 336, 433]; opt. phot. & spe.: [339]; sys. velocity: [721]; $v_{\rm r}\sin i \sim 300~{\rm km~s}^{-1}$: [339]; X-ray/opt. obs.: [497]; opt. spe. after X-ray outburst: [556]; multiwavelength study: [109]; UV obs.: [105]; radio obs.: [297].
1119-603 P 11 19 01.9 V779 Cen 13.3, 1.07, -0.04 10-312 2.09
Cen X-3   -60 20 57   O6.5 II-III, 1.4   4.84
U, M, A, H o 3 $^{\prime\prime}$ 292.1, +0.3 [72, 394] [315, 394, 586] [63] [366, 508]
             
Pos.: [63]; X-ray pulsations: [224, 696]; X-ray orbit: [366]; period decay: [188, 366]; X-ray spectrum: [25, 76, 432, 765]; long-term X-ray history: [246, 328, 558, 562, 624]; X-ray eclipses: [622]; X-ray obs.: [296, 504, 512]; aperiodic X-ray variability: [38]; QPO: [668]; opt. light curve: [373, 689, 727]; opt. radial-velocity curve: [315, 502, 524]; mass of the NS: [22]; $v_{\rm r}\sin i \sim 250~{\rm km~s}^{-1}$: [315]; system velocity: [721]; IR obs.: [232]; structure companion star: [97]; distance: [302]; outburst of GeV $\gamma$-ray emission: [733].
1145-619 PT 11 45 33.6 Hen 715 9.3, 0.18, -0.81 4-1000 187.5
    -61 55 44 HD 102567 B1 Vne, 0.35   292.4
U, M, A, H, S o 295.6, -0.2 [64] [195, 518, 746] [63] [508, 748]
             
Pos.: [63]; X-ray spectrum: [765]; X-ray obs.: [475]; long-term X-ray history: [562, 748]; opt. spectrum: [340, 762]; $v_{\rm r}\sin i \sim 270~{\rm km~s}^{-1}$: [261, 340]; system velocity: [721]; coordinated X-ray/opt. obs.: [121]; UV obs.: [46, 163, 261, 546]; wind structure: [746]; multiwavelength obs.: [656].
1145.1-6141 P 11 45 02.3 V830 Cen 13.1, 1.5, 0.15 4-40 5.65
    -61 40 33   B2Iae, 1.6   298
A, E, C o 2 $^{\prime\prime}$ 295.5, -0.0 [316] [166, 325] [316] [325, 508]
             
Pos.: [316]; X-ray pulsations: [762]; orbital periods 10.76 d from opt. sp.: [321]; system velocity: [721]; 15$^\prime$ away from 1145-619: [397, 763].
1223-624 PT 12 23 49.7 BP Cru 10.8, 1.76, 0.42 9-1000 41.59
GX 301-2   -62 29 37 Wra 977 B1-1.5 Ia, 1.8   696
U, M, A, H, S, AS, C o 3 $^{\prime\prime}$ 300.1, -0.0 [64] [59, 260, 688, 734] [63] [508, 613]
             
Pos.: [63]; X-ray spectrum: [765]; long-term X-ray record (recurrent outbursts near periastron): [560, 601, 749]; X-ray obs.: [248, 405, 588, 589, 760]; pulse-phase spectr.: [403]; pulse profile: [485]; X-ray orbit: [613]; X-ray dips: [404]; aperiodic X-ray variability: [38, 675]; rapid spin-up episodes: [383]; optical spectrum: [58, 260, 317, 539, 688]; optical photometry: [526, 723]; system velocity: [721]; IR obs.: [232]; a hypergiant (?): [360].
1239-599 P 12 39 07.5     3-16  
    -59 55 39       191
A, H, S x 30 $^{\prime\prime}$ 301.8, +2.6 [177]   [63, 743, 781] [297]
             
Pos.: [177]; hard X-ray spectrum: [297]; see also: [82].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
1244-604 T 12 44 38     <24-100  
    -60 22.2        
A x 6.2$^\prime$ 302.5, +2.2     [82]  
             
Pos.: [82].
1246-588 T 12 46 39     <24-300  
    -58 51.0        
U, A, H x 4.5$^\prime$ 302.7, +3.8     [82]  
             
Pos.: [82].
1249-637   12 39 53.2 HD 110432 5.31, 0.27, -0.79 2.2  
    -62 47 06 SAO252002 B0 IIIe, 0.40    
H o 302.0, -0.2 [646] [103, 518] [781]  
             
Pos.: [698]; Be star: [739]; UV obs.: [103]; interstellar abs. lines: [149]; optical obs.: [156, 196, 212]; variable radial velocity: [77, 685]; white-dwarf accretor(?): [745].
1253-761   12 35 59.8 HD 109857 6.49, 0.08, -0.24 0.6  
    -75 05 43 SAO256967 B7 Vne, 0.20    
H o 302.1, -12.5 [646] [103, 518] [781]  
             
Pos.: [698]; Be star: [739]; visual double (sep. 2.2 $^{\prime\prime}$): [201]; no optical brightness variations: [28]; white-dwarf accretor(?): [745].
1255-567   12 51 39.6 $\mu^2$ Cru 5.17, -0.12, -0.51 0.8  
    -56 53 50 HD 1120912 B5 Ve, 0.04    
H o 303.4, +5.7   [518, 639] [781]  
             
Pos.: [698]; Be star: [739]; $v_{\rm r}\sin i \sim 220~{\rm km~s}^{-1}$: [639]; visual double with $\mu^1$ Cru: [288]; slow & small optical variability: [549].
1258-613 PT? 12 58 11.8 V 850 Cen 13.5-14.2, 1.7, 0.8 0.3-200 133?
GX 304-1   -61 19 58 *2 (MMV) B2 Vne, 2.0   272
U, M, A, S o 2 $^{\prime\prime}$ 302.1, +1.2 [465] [127, 256, 538] [63, 554] [508, 562]
             
Pos.: [465]; long-term X-rays: [559, 562]; X-ray off state: [554]; X-ray spectrum: [588, 765]; opt. spectrum: [123, 465, 688]; long-term opt. variations: [127, 256]; $v_{\rm r}\sin i \sim 600~{\rm km~s}^{-1}$: [538]; system velocity: [721]; IR obs.: [232].
J 1324.4-6200 P 13 24 26.3     0.4  
1323-6196   -62 00 53       170.84
B, AS, Exo, E x 1.5$^\prime$ 306.8, +0.61     [13] [13]
             
Pos.: [13]; distance >3.4 kpc: [13]; hard X-ray spe.: [13]; likely a Be/X-ray system: [13].
1417-624 PT 14 17 25.5 *7 17.2:, 0.7:1.7, 0.8 2-43 42.12
    -62 28 11   OBe, 2:   17.6
U, M, A, S, C o 313.0, -1.6 [18] [244] [63] [207, 508]
             
Pos.: [63]; X-ray obs.: [18, 207, 364]; opt. id: [244]; orbital parameters: [207]; Centaurus 1971-2 transient (?): [115, 755]; 1994 II-type outburst: [207].
J 1452.8-5949 P 14 52 49.3     0.04  
    -59 49 18       437.4
B x 50 $^{\prime\prime}$ 317.6, -0.44     [522] [522]
             
Pos.: [522]; distance: [522]; probably a Be star: [522]; X-ray spe.: [522].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}$, $b^{\rm II}$ [FC]      
1538-522 P 15 38 38.6 QV Nor 14.4, 1.9, 0.6 <3-30 3.73
    -52 13 37 *12 B0 Iab, 2.1   529
U, M, A, H, S o 327.4, +2.1 [17] [147, 324, 537] [63] [114, 508]
             
Pos.: [63]; X-ray obs.: [114, 150, 442, 592]; X-ray eclipses: [35, 159]; X-ray orbit: [442]; X-ray spectrum: [442, 765]; X-ray cyclotron line: [94]; long-term spin-up trend: [604]; opt. light curve: [529]; radial-velocity curve: [147, 583]; $v_{\rm r}\sin i \sim 200~{\rm km~s}^{-1}$: [147]; system velocity: [721]; opt. obs.: [537].
1553-542 P 15 53 55.6     27 30.6
    -54 16 15       9.3
S x 3.5 $^{\prime\prime}$ 327.9, -0.9 [17]   [63] [367, 508]
             
Pos.: [63]; opt. counterpart likely a Be star: [367]; X-ray orbit: [367].
1555-552   15 50 26.4 HD 141926 8.60, 0.56, -0.43 1.7  
    -55 10 54 SAO243098 B2nne, - -    
H o 327.0, -1.2 [646] [193, 293] [781]  
             
Pos.: [698]; Be star: [739].
1657-415 P 16 57 16.8 star   4-42 10.4
    -41 35 59   B0-B6Ia-Iab, - -   38
OAO, B x 15 $^{\prime\prime}$ 344.4, +0.3 [21] [84] [63] [84, 205, 508]
             
Pos.: [21]; error box $\sharp $2: [21, 476, 540]; V861 Sco not the optical counterpart: [21]; X-ray obs.: [358]; X-ray spectrum: [765]; hard X-ray obs.: [476]; orbital solution: [84].
1700-377   17 00 32.7 HD 153919 6.6, 0.27, -0.72 <11-110 3.41
    -37 46 29 V884 Sco O6.5f, 0.52    
U, M, S, Gro, C, B o 347.8, +2.2 [351] [259, 263, 547, 778] [63] [67, 251, 728]
             
Pos.: [63]; X-ray variability: [38, 175, 252]; hard X-ray spectrum: [211, 552]; no X-ray pulsations: [175, 236]; opt. light curve: [26, 91, 728]; opt. spectrum: [117, 155, 192, 274]; radial-velocity curve: [175, 258]; $v_{\rm r}\sin i \sim 140-300~{\rm km~s}^{-1}$: [117, 155, 305, 778]; system velocity: [721]; UV obs.: [182, 259, 263, 359]; soft X-ray Raman scattering: [359]; opt. polarimetry: [172, 173]; IR obs.: [232, 547]; system parameters: [270]; polarization: [779]; possibly 13.81 days period: [384].
J 170006-4157 P 17 00 5.3     0.4  
    -41 57 44       714.5
AS x 1$^\prime$ 344.0, +0.25     [691] [691]
             
Pos.: [691]; can't completely exclude the possibility that it is a WD binary: [691].
1722-363 P 17 22 33     0.2-5  
    -36 22 05       413
Exo x 9$^\prime$ 351.5, -0.6     [672, 676] [508, 676]
             
Pos.: [744]; hard X-ray spectrum: [676]; limits on orbital period: [672].
J1739-302 T 17 38 53     136  
    -30 15.6     (2-25 keV)  
X x 3$^\prime$ 358.1, +0.56     [645]  
             
Pos.: [645]; radio obs.: [283]; probably a Be/X-ray sys.: [645]; X-ray spec. and short X-ray outburst: [645].
J 1739.5-2942   17 39 30.1     2  
    -29 42 07        
X, C x 19.2 $^{\prime\prime}$ 358.6, -0.74 [501]   [501]  
             
Pos.: [501]; likely a Be/X-ray binary: [501]; hard X-ray spec.: [501]; identical X-ray source 1736-297(?): [501].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}, b^{\rm II}$ [FC]      
J 1744.7-2713   17 44 45.4 HD 161103 8.4, 0.44, -0.64 0.06  
    -27 13 47   B2V-IIIe    
R x 18 $^{\prime\prime}$ 1.36, +1.1        
             
Pos.: [500]; strong emission lines: [500]; distance 0.8 kpc: [500]; likely Be/X-ray binary: [500].
J 1749.2-2725 TP 17 49 10.1     1.36  
    -27 25 16       220.38
AS x 1$^\prime$ 1.7, +0.1     [690] [690]
             
Pos.: [690]; weak X-ray source: [690]; hard X-ray spe.: [690]; likely a NS: [690]; within error of a nearby WD: [690].
J1750-27 P 17 49 12.0     27 29.8
    -26 38 50       4.45
C, AS x 2$^\prime$ 2.4, +0.5     [777] [176, 627]
             
Pos.: [176]; no optical counterpart reported: [627]; likely Be system: [627]; large spin-up: [627].
1807-10 T 18 07.9     <2-10  
    -10 53        
U x 1.3$^\circ$ 18.6, +3.9     [215]  
             
Pos.: (large error box): [215]; uncertain if HMXB or LMXB.
J 1820.5-1434 P 18 20 29.5     1  
    -14 34 24       152.26
AS x 0.5$^\prime$ 16.5, +0.07     [376] [376]
             
Pos.: [376]; a highly obscured accretion-driven binary X-ray: [376].
J 1826.2-1450   18 26 14.9 LS 5039 11.23, 0.94, -0.16 0.3  
    -14 50 29   O7V((f)), 0.8    
R x 22 $^{\prime\prime}$ 17.9, -1.29 [500] [500] [500]  
             
Pos.: [500]; distance 3.1 kpc: [500]; optical spe.: [500]; radio cpt.: [463a]; X-ray and radio obs.: [584a]; a $\gamma$-ray-emitting persistent microquasar: [536a].
1833-076 PT 18 33 46.3     1.6-200  
Sct X-1   -07 38 54       111
A, H x 30 $^{\prime\prime}$ 24.5, -0.2 [237]   [388, 563, 743] [392, 508]
             
Pos.: [574]; alternative position (18 34 49.5, -07 38 05): [574]; X-ray obs.: [88, 278]; X-ray pulsations: [392]; hard X-ray spectrum: [122, 574]; long-term X-ray record: [563]; transient: [122].
1839-06 T 18 39.0     1  
    -05.9        
G x 30$^\prime$ 26.6, -0.5     [388]  
             
Pos.: [388].
1839-04 PT 18 39.2     2.5  
    -04.5       81.1
G x 24$^\prime$ 27.9, +0.1     [388] [388]
             
Pos.: [388].
1843+009 PT 18 43.0     <0.4-33  
    +0.9       29.5
G, C, X, B x 10$^\prime$ 33.1, +1.7     [388] [388]
             
Pos.: [388]; X-ray obs.: [388, 389].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}$, $b^{\rm II}$ [FC]      
1845-03 T 18 44.7     1  
    -03.2        
G x 24$^\prime$ 29.7, -0.5     [388]  
             
Pos.: [388].
1845-024 PT 18 45 41.1     1-44 241
    -02 28 37       94.8
A, H, S, G, C, B x 30 $^{\prime\prime}$ 30.4, -0.4 [237]   [63, 388] [792, 388]
             
Pos.: [63]; X-ray obs.: [178, 388, 390, 630]; distance: [792]; same sources as GS 1843-02, X1845-024, and GRO J1849-03: [647]; likely a Be/X-ray: [647, 209]; X-ray outburst: [209]; high eccentricity (0.88): [209].
1845.0-0433 T 18 45 02   13.96, 2.2, 1.04 45  
    -04 33 31   O9.5I, 2.45 (0.7-10 keV)  
AS x 1$^\prime$ 28.8, -1.22 [111] [111] [786]  
             
Pos.: [111]; discovery X-ray source: [786]; optical spectrum: [111]; distance 3.6 kpc: [111].
1855-02 PT 18 55.4     2  
    -02.8        
G x 10$^\prime$ 31.3, -2.7     [388]  
             
Pos.: [388].
J1855-026 P 18 55.7     6 6.1
    -02 37       361
X x 6$^\prime$ 31.1, -2.15     [460] [134, 460]
             
Pos.: [460]; most likely a SG/X-ray system: [134]; BD-2 4786 not the opt. cpt.: [134]; X-ray spe.: [134].
J1858+034 TP 18 58.6     25  
    03 21       221.0
X x 2.5$^\prime$ 36.7, -0.07     [582] [670]
             
Pos.: [462]; QPO: [544]; probably a Be/X-ray sys.: [670]; very hard X-ray spec.: [462,544].
1901+03 T 19 01.7     <2-87  
    +03 06.0        
  x 10$^\prime$ 37.2, -1.4     [115]  
             
Pos.: [215]; transient 1971: [115, 214]; hard X-ray spectrum: [115].
J1906+09 P 19 05 20     0.7  
    09 02.5       89.17
X x 2$^\prime$ 42.6, +1.04     [457] [457]
             
Pos.: [667]; distance: [457]; likely a supergiant: [457]; not associated with the soft gamma-ray repeater SGR 1900+14: [671]; X-ray spec.: [457].
1907+097 PT 19 07 15.1 star 16.4, 3.2, - - 4-275 8.38
    +09 44 54   B I, 3.3   438
U, M, A, H o 43.7, +0.5 [625] [625, 718] [63] [441, 508]
             
Pos.: [625]; long-term X-ray recod: [563]; 1980 outburst: [459]; orbital parameters: [120, 441]; orbital modulation X-ray flux: [459]; opt. spectrum: [337, 718]; $v_{\rm r}\sin i \sim 85~{\rm km~s}^{-1}$: [718].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}$, $b^{\rm II}$ [FC]      
1909+048   19 09 21.3 SS433 14.2, 2.1, 0.6 2-10 13.1
    +04 53 54 V1343 Aql pec, 2.6    
U, A, H, G o, r 39.7, -2.2 [407] [450, 507, 740] [63] [145]
Pos.: [63]; X-ray obs.: [30, 38, 68, 69, 245, 363]; Doppler shift X-ray Fe line: [468, 751]; extended X-ray lobes: [631, 750]; $\gamma$-ray obs.: [223, 398]; Doppler shifted opt. emission lines: [448, 451]; stationary emission lines from accretion disk: [204]; kinematic model precessing (164 d) high-speed jets: [6]; opt. spe.: [24, 191, 194, 386, 452]; opt. spectrophot.: [9, 385, 740]; opt. lt. curve: [14, 15, 23, 275, 406, 408, 409]; long-term optical phot. record: [275, 369, 469]; X-ray/opt. eclipse: [658]; IR obs.: [382, 742]; precession clock: [10]; radio structure: [31, 197, 198, 596, 651, 732]; radio variability: [57, 202]; distance 5.5 kpc: [284]; nature of the compact star: [171]; reviews: [447, 731, 793]; circularly polarized radio emissiom: [200]; VLBA multifreq. obs.: [531].
1936+541   19 31 42.6 DM+53$^\circ$2262 9.8, - -, - - 0.7  
    +53 46 12   Be, - -    
H o 85.9, +15.9   [698] [781]  
Pos.: [698]; Be star: [739].
J1946+274 TP 19 45 38     <1-25 80
1942+274   27 21 38.0     (2-60 keV) 15.8
A, X, B x 1$^\prime$ 63.2, +1.38     [666, 743] [80, 644]
Pos.: [80]; transient Nov.-Dec. 1976: [743]; X-ray flare: [80]; likely a Be: [80]; very hard X-ray spec.: [644]; same as 3A 1942+274 and 1SAX J1946.5+2721: [80, 666].
1947+300 T 19 47 36.3 *3 14.2, 0.9, -0.3 <10-84  
    +30 04 54   - -, 1.1    
K o 66.1, +2.1 [238] [234, 238] [60]  
Pos.: [238]; H$\alpha$ emission: [234]; likely, but not certain this is a HMXB: [234, 238]; see also [638].
J1948+32 P 19 48     27-53 35-70
    32.0     (20-75 keV) 18.7
C x 64.9, +1.8     [85] [85]
Pos.: [85]; eccentricity <0.25: [85]; mass function: [85]; probably a Be: [85].
1954+319   19 53 46.2     <1.5-80  
    +31 58 02        
U, A x 15 $^{\prime\prime}$ 68.4, +1.9 [119]   [119, 743]  
Pos.: [186]; heavily reddened supergiant system (?): [699].
1956+350 U 19 56 28.9 HD 226868 8.9, 0.84, -0.26 235-1320 5.
Cyg X-1   +35 03 55 V1357 Cyg O9.7 Iab, 1.06    
U, M, A, H, X, G, C o, r 71.3, +3.1 [568] [116, 158, 518] [63] [227]
Pos.: [63]; hard X- and $\gamma$-ray obs.: [226, 419, 608, 626, 700, 701]; long-term X-ray obs.: [289, 565]; X-ray low/high states: [418, 674]; X-ray dips: [29, 378, 581]; rapid X-ray variability: [37, 38, 427, 471, 486, 487, 488, 602]; QPO: [218, 387, 735, 736]; chaotic (?): [426, 707]; 300 d period: [228, 368, 370, 565]; X-ray spectrum: [32, 33, 189, 379, 432, 737, 759]; $\gamma$-ray obs.: [420, 551]; radio obs.: [65, 66, 281, 286]; opt. spectra: [1, 2, 116, 229, 519, 648]; radial-velocity curve: [227, 228, 519]; $v_{\rm r}\sin i \sim 100~{\rm km~s}^{-1}$: [229]; system velocity: [721]; nature of the compact star: [52, 633, 752]; opt. light curve: [370, 435]; opt. UV polarimetry: [174, 217, 779]; UV obs.: [158, 182, 692, 783]; IR obs.: [402]; reviews (1977): [521]; fund. parameters: [277].
2030+375 PT 20 30 22.1 *2 19.7, 3.3, - - <0.5-1400 46.0
    +37 28 00   B0, 3.8   41.8
Exo, C, B, X, AS o 2 $^{\prime\prime}$ 77.2, -1.3 [107, 496] [107, 496] [541] [508, 541, 662]
Pos.: [496]; outburst: [541]; rapid X-ray variability: [38]; 0.2 Hz QPO: [12]; opt. spe.: [107, 342]; long-term opt./IR variability: [580].


 
Table 1: continued
Name(s) type RA Opt. Ctp. V, B-V, U-B Fx $P_{\rm orb}$(d)
    DEC   Sp. type, EB-V $\mu$Jy $P_{\rm pulse}$(s)
  Pos. $l^{\rm II}$, $b^{\rm II}$ [FC]      
2030+407   20 30 37.6 V1521 Cyg I=20.0 90-430 0.20
Cyg X-3   +40 47 13   Wolf-Rayet, 6.3    
U, M, A, H, CX r 79.9, +0.7 [741] [493, 719, 741] [63] [543]
             
Pos.: [63]; distance: [168]; orb. period change: [380, 712]; long-term X-ray obs.: [289, 564]; no X-ray pulsations: [380, 782]; orbital X-ray curve: [55, 377]; aperiodic variability: [38]; X-ray halo: [490]; transient QPO: [713]; radio outbursts: [241, 282, 346, 492]; quiescent radio flares (period 4.95 h?): [491]; radio jet & lobes: [55, 222, 664]; IR phot.: [36, 464, 466]; IR spectra (secondary helium star): [362, 719]; no X-ray pulsations: [782]; X-ray spectrum: [377, 758]; 1989 review (incl. TeV/PeV $\gamma$-rays: [53]; spe. variability during outburst and quiescence: [199]; VLBI obs. during outburst: [615].
J2030.5+4751   20 30 30.6 SAO 49725 9.27, 0.38, -0.65 0.04  
    47 51 46   B0.5V-IIIe, - -    
R x 18 $^{\prime\prime}$ 85.2, +5.02 [500] [500] [500]  
             
Pos.: [500]; strong emission lines: [500]; distance 2.2 kpc: [500]; likely Be/X-ray binary: [500].
J2058+42 TP 20 59.0     320 110
    41 43       198
C, X x 4$^\prime$ 83.5, -2.75 [83]   [775] [775]
             
Pos.: [775]; orbital period 54 days: [129]; giant outburst in 1995: [775]; most likely a Be/X-ray sys.: [775]; one of two stars likely opt. ctp.: [83].
J2103.5+4545 P 21 03 33     20 12.68
    45 45.0       358.61
B, X x 2.5$^\prime$ 87.1, +0.71     [34] [34, 301]
             
Pos.: [301]; distance 4 kpc: [34]; eccentricity 0.4: [34]; HD 200709 not opt. cpt.: [34]; X-ray spe.: [301].
2138+568 PT 21 38.0 star   <6-100  
Cep X-4?   +56 50.0   B1   66.2
M, H, G x 7$^\prime$ 99.0, +3.3   [53a] [391] [391, 508]
             
Pos.: [391]; likely Be/X-ray system: [391]; X-ray obs.: [391]; X-ray cyclotron line: [481]; same as Cep X-4(?): [454, 704]; X-ray outburst: [776]; orbital period 23-147.3 days: [776].
2202+501   21 59 44.1 DM+49$^\circ$3718 8.8, - -, - - 0.7  
    +49 55 35 SAO51568 Be, - -    
H o 97.3, -4.0 [646] [698] [781]  
             
Pos.: [698]; Be star: [739].
2206+543   22 06 07.4 star 9.9, 0.2, -0.6 0.6-5.5  
    +54 16 23   B1e, 0.5   392(?)
U, M, A, H o 2 $^{\prime\prime}$ 100.6, -1.1 [654] [654] [743, 781] [611]
             
Pos.: [654]; X-ray observations: [611]; H$\alpha$ emission: [123].
2214+589   22 24 47.8 GG3 71 11, - -, - - 0.5  
    +60 58 59   B[e], - -    
H o 106.4, +3.1 [233] [264, 698] [781]  
             
Pos.: [698]; Be star: [739]; Herbig Ae/Be candidate: [264]; associated with IRAS source 22248+6058: [264].
J2239.3+6116 T 22 39 20.90 star 15.1, 1.4, - - 16 262
    +61 16 26.8   B0V-B2IIIe, 1.4    
B, A, U, X o0.3 $^{\prime\prime}$ 107.7, +2.3 [327a] [327a] [327a] [327a]
             
Pos.: [327a]; distance of 4.4 kpc: [327a]; position coincided with 4U 2238+60 and 3A 2237+608: [327a].


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