2. The sample

The galaxies for our sample were extracted mostly from the PGC catalogue (Paturel et al. 1996). The northern ( $\delta > 0^\circ$) objects with radial velocities < 500 km s^-1 and with an uncertainty of total magnitude $B_{\rm T}$ > 0.2$^{\rm m}$ were included in the list. Some objects from the list of nearby galaxies by Karachentsev (1994) were also added to the sample. General parameters of 61 chosen galaxies are given in Table 1. The columns of the table are:

  

Table 1: General parameters of the sample

Ident.	PGC id.	$\alpha$ (1950)	$\delta$ (1950)	Type	D25	$B_{\rm T}$	AB	AV	AI	$V_\odot$	Dist.
					(arcmin)					(km s-1)	(Mpc)
IC 10	PGC 0001305	00$^{\rm h}$17$^{\rm m}$41.$^{\rm s}$5	59$^\circ$00'52''	9.8	6.8	12.20	4.01	3.08	1.80	-345	0.8
Cas 1	LEDA0100169	020205.0	684618				4.44	3.42	2.00	35	2.8
UGCA 39	PGC 0010217	023807.9	592324	3.9	3.3		5.73	4.40	2.58	-2	2.7
Dwingeloo 2	LEDA0101304	025021.7	584807				5.11	3.93	2.30	93	4.5
Dwingeloo 1	LEDA0100170	025306.4	584238				5.94	4.57	2.67	110	4.8
NGC 1156	PGC 0011329	025646.8	250221	9.8	3.3	12.04	1.06	0.82	0.48	380	7.8
UGC 2684	PGC 0012514	031742.0	170800	9.9	1.8		0.58	0.45	0.26	349	6.5
UGC 2716	PGC 0012719	032117.2	173442	7.9	1.6	15.13	0.61	0.47	0.27	379	6.7
UGC 2773	PGC 0013115	032835.3	473728		1.2	15.04	2.37	1.82	1.06	242	5.6
UGCA 86	PGC 0014241	035500.0	665900	10.0	0.9		4.22	3.24	1.90	68	2.6
NGC 1569	PGC 0015345	042605.8	644418	9.8	3.6	11.70	3.40	2.61	1.53	-86	1.7
UGCA 92	PGC 0015439	042724.0	633000	10.0	2.0		3.58	2.75	1.61	-99	1.8
UGCA 105	PGC 0016957	050936.0	623100	10.0	5.5	15.25	1.38	1.06	0.62	111	3.2
KK 49	PGC 0017603	053900.0	064000			15.36	2.90	2.23	1.30	441	5.4
Orion	PGC 0017716	054222.0	050230				2.84	2.18	1.28	365	6.4
UGC 3676	PGC 0019162	062711.9	332013	9.9	1.0	15.67	1.00	0.76	0.45	469	7.0
UGC 3600	PGC 0019871	065212.0	390918	10.0	1.1		0.40	0.31	0.18	403	7.3
UGC 3698	PGC 0020264	070541.4	442742	10.0	1.0	15.43	0.45	0.34	0.20	423	7.2
NGC 2337	PGC 0020298	070637.1	443220	9.9	2.0	13.05	0.40	0.31	0.18	434	7.9
UGC 3755	PGC 0020445	071106.3	103618	9.9	1.6	14.64	0.38	0.29	0.17	323	4.1
UGC 3817	PGC 0020852	071906.0	451200	10.0	1.8		0.41	0.32	0.18	438	8.6
	LEDA0093088	072312.0	691700	8.0	1.1		0.17	0.13	0.08	135
NGC 2366	PGC 0021102	072336.5	691900	9.7	7.3	11.43	0.16	0.12	0.07	99	3.4
UGC 3974	PGC 0021600	073902.7	165517	9.8	3.8	13.71	0.15	0.12	0.07	270	4.3
K 52	PGC 0023521	081843.0	711125	10.0	1.3	16.5	0.11	0.08	0.05	113	3.0
UGC 4459	PGC 0024050	082933.0	662101	9.8	1.6	14.5	0.15	0.12	0.07	18	3.1
UGC 4483	PGC 0024213	083207.0	695716	9.9	1.1	15.51	0.14	0.11	0.06	156	3.6
F464-v3	LEDA 086668	090003.0	201619	10.0	0.9	15.9	0.13	0.10	0.06	481	5.2
UGC 5086	PGC 0027115	092959.1	214112	8.4	0.9	15.73	0.14	0.11	0.06	498	7.4
Holmberg I	PGC 0027605	093600.0	712447	9.8	3.6	13.20	0.18	0.14	0.08	136	6.7
UGC 5288	PGC 0028378	094838.5	080343	7.9	0.8	14.22	0.15	0.12	0.07	555	6.8
BK3N	PGC 0028529	094942.0	691218	10.0	0.5	18.6	0.38	0.29	0.17	-40	2.8
Holmberg IX	PGC 0028757	095328.0	691653	9.8	2.6	14.41	0.34	0.26	0.16	47	3.4
UGC 5423	PGC 0029284	100125.3	703627	9.9	1.0	15.52	0.36	0.28	0.16	342	5.3
UGC 5692	PGC 0030997	102648.0	705233	8.6	3.4	13.49	0.20	0.15	0.09	180	4.5
UGC 5918	PGC 0032405	104617.0	654740	9.8	2.4	15.13	0.05	0.04	0.02	338	7.4
K 73	PGC 0032667	104928.2	694842	10.0	0.6	18.2	0.09	0.07	0.04	115	4.0
UGC 6817	PGC 0037050	114816.8	390931	9.9	4.2	13.44	0.11	0.09	0.05	245	3.9
NGC 4068	PGC 0038148	120129.7	525201	9.8	3.2	13.21	0.08	0.06	0.04	210	5.2
NGC 4144	PGC 0038688	120728.3	464407	6.0	6.2	12.01	0.07	0.05	0.03	267	9.8
NGC 4163	PGC 0038881	120937.6	362651	9.8	1.7	14.48	0.09	0.07	0.04	163	3.6
KK 127	PGC 0038998	121051.1	301159		1.0	15.61	0.08	0.06	0.04	152	16.0
UGC 7298	PGC 0039316	121400.0	523200	9.8	1.2		0.11	0.08	0.05	170	8.6
UGC 7321	PGC 0039432	121502.3	224901	6.5	5.6	14.11	0.11	0.08	0.05	409	4.9

 

Table 1: continued

Ident.	PGC id.	$\alpha$ (1950)	$\delta$ (1950)	Type	D25	$B_{\rm T}$	AB	AV	AI	$V_\odot$	Dist.
					(arcmin)					(km s-1)	(Mpc)
IC 3308	PGC 0040495	122248.0	265931	7.3	1.4	15.17	0.09	0.07	0.04	315	3.9
UGC 7577	PGC 0040904	122515.4	434613	9.7	4.2	12.87	0.08	0.06	0.04	195	4.8
NGC 4449	PGC 0040973	122545.2	442215	9.7	6.2	9.83	0.07	0.05	0.03	202	4.5
UGC 7698	PGC 0041636	123026.2	314902	9.9	6.5	13.06	0.06	0.05	0.03	332	6.1
IC 3687	PGC 0042656	123950.9	384633	9.8	3.5	13.72	0.08	0.06	0.04	358	3.0
IC 4182	PGC 0045314	130330.0	375223	8.7	6.0	12.41	0.06	0.05	0.03	315	5.0
UGC 8201	PGC 0045372	130439.4	675816	9.9	3.4	12.85	0.11	0.08	0.05	34	4.9
UGC 8308	PGC 0045939	131111.9	463457	9.8	1.1	14.91	0.05	0.04	0.02	164	3.7
UGC 8320	PGC 0046039	131216.6	461101	9.9	3.6	12.73	0.06	0.04	0.02	194	4.0
UGC 8331	PGC 0046127	131320.3	474537	9.8	2.5	14.59	0.03	0.02	0.02	259	8.2
UGC 8508	PGC 0047495	132846.8	551003	9.8	1.7	14.64	0.06	0.04	0.03	62	3.7
NGC 5229	PGC 0047788	133158.5	481016	6.6	3.3	14.51	0.06	0.05	0.03	364	5.1
Holmberg IV	PGC 0049448	135255.2	540858	9.7	4.2	13.59	0.06	0.05	0.03	142	8.3
NGC 5474	PGC 0050216	140315.3	535405	6.0	5.0	11.23	0.05	0.04	0.02	276	7.2
NGC 6503	PGC 0060921	174958.7	700926	5.9	7.1	10.74	0.15	0.11	0.06	44	5.2
NGC 6946	PGC 0065001	203348.8	595850	5.9	11.2	9.58	1.48	1.14	0.66	52	6.0
Pegasus	PGC 0071538	232602.8	142816	9.8	5.1	12.82	0.27	0.20	0.12	-183	0.8

Column 1: NGC, IC or UCG name of the galaxy.

Column 2: PGC name.

Columns 3 and 4: 1950 coordinates.

Column 5: galaxy type according to RC3 system, as given in PGC catalogue.

Column 6: angular diameter at the 25$^{\rm m}$ isophotal level (in arcmin) from PGC.

Column 7: total magnitude $B_{\rm T}$ according to PGC.

Columns 8, 9 and 10: values of galactic absorption (in mag) in B, Vand I filters, respectively, taken from IRAS/DIRBE maps (Schlegel et al. 1998).

Column 11: radial velocity in km s^-1.

Column 12: galaxy distance in Mpc taken from Karachentsev (1994), recently revised by D. Makarov and I. Karachentsev (private communications).

The majority of the galaxies from our list have small diameters (1-4 arcmin) and type around 9.5-10. The distribution of their total magnitudes $B_{\rm T}$shows a maximum near 13 and 15 magnitudes. Therefore, most of the sample galaxies are dwarf irregular objects.