5 Results

At present over 93% of the 165 X-ray sources have been successfully identified in the following classes: 115 emission line AGN (QSOs and Seyferts), 2 BL Lac objects and 4 BL Lac candidates, 22 clusters of galaxies, 12 Galactic stars. The other 10 X-ray sources remain unidentified because the proposed stellar counterparts are too faint to be the likely X-ray emitters. This represents a success rate of about 73% for detecting AGN using our selection criteria.

The final results of the identification are listed in Table 2 containing the following information in Cols. 12 to 14:

Column (12): Identification classification of the counterpart based on the criteria described in Sect. 4.

   

Table 2: X-ray identification information

ROSAT name	RA	Dec	P.E	D	CR	HR1	HR2	ext	R	B	ID	z	MB
1RXS J	(2000)	(2000)	('')	('')	(cts s-1)			('')
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)
000011.9+052318	00 00 11.76	05 23 17.3	7	2.2	0.264	0.24	0.00	0	15.5	16.4	Sey	0.040	-20.5
000055.5+172346	00 00 55.98	17 23 39.0	12	9.8	0.065	0.10	-0.13	14	16.5	17.2	QSO	0.215	-23.4
000550.0+102249	00 05 49.54	10 22 37.2	9	13.6	0.073	0.85	-0.08	0	15.9	16.7	Sey	0.095	-22.1
000620.3+105207	00 06 20.33	10 51 51.0	27	16.0	0.135	0.91	0.72	100	14.9	18.0	CL	0.167
000915.0+243758	00 09 15.21	24 37 39.3	20	18.9	0.118	0.45	-0.30	21	16.4	17.6	Sey	0.118	-21.7
000953.0+371906	00 09 52.42	37 19 10.1	13	8.0	0.082	0.70	-0.20	0	15.5	16.6	QSO	0.154	-23.3
001121.2+373919	00 11 21.02	37 39 23.0	11	4.5	0.126	0.90	0.21	21	15.2	16.5	Sey	0.104	-22.5
001452.7+270549	00 14 53.04	27 05 41.5	11	8.8	0.171	0.18	0.15	7	15.6	16.4	Sey	0.086	-22.2
002007.2+324423	00 20 07.31	32 44 09.9	12	13.2	0.083	0.54	0.09	0	15.6	17.0	Sey	0.082	-21.5
002136.8+280305	00 21 36.32	28 03 10.9	23	8.7	0.160	1.00	0.17	78	13.4	16.3	CL	0.094
	00 21 35.42	28 03 18.0		22.4					14.9	18.3
	00 21 36.87	28 03 01.9		3.2					11.7	15.1
002433.0+331237	00 24 32.89	33 12 24.6	27	12.5	0.097	0.74	0.11	72	15.0	19.0	CL	0.225
002445.3+082047	00 24 45.75	08 20 56.6	20	11.7	0.060	0.04	-0.76	0	15.8	17.2	Sey	0.067	-20.8
002811.6+310342	00 28 10.76	31 03 47.8	9	12.3	0.168	0.64	0.05	14	15.3	15.8	QSO	0.500	-26.7
002902.7+195717	00 29 02.95	19 57 09.9	10	7.9	0.082	0.68	0.34	0	16.5	17.5	QSO	0.264	-23.6
003121.2+301558	00 31 22.02	30 16 02.1	14	11.4	0.050	0.34	-0.01	0	16.3	18.2	Sey	0.200	-22.7
003221.1+242359	00 32 21.04	24 23 59.3	13	0.9	0.090	0.42	-0.26	0	15.4	17.3	Sey	0.066	-20.7
003952.8+313228	00 39 51.92	31 32 31.7	10	11.8	0.135	-1.00	0.00	0	14.6	14.7	WD
004459.4+192143	00 44 59.13	19 21 40.8	9	4.4	0.166	-0.20	-0.22	0	16.1	16.4	QSO	0.179	-23.8
005034.2+044152	00 50 33.77	04 41 48.8	11	7.2	0.052	-0.08	0.29	0	15.7	17.2	Sey	0.097	-21.7
005050.6+353645	00 50 50.79	35 36 42.3	8	3.6	0.285	0.13	-0.14	10	14.0	14.6	QSO	0.058	-23.1
005607.6+254802	00 56 07.70	25 48 04.9	10	3.2	0.125	0.38	0.14	9	15.6	16.7	QSO	0.153	-23.2
011216.3+330243	01 12 17.13	33 02 41.3	15	10.6	0.056	0.79	0.29	0	16.4	18.8
011655.1+254937	01 16 54.07	25 49 27.8	12	16.7	0.079	0.95	0.51	13	15.3	16.7	Sey	0.099	-22.2
011745.5+363718	01 17 45.64	36 37 14.1	8	4.3	0.213	0.78	0.08	8	15.3	16.3	Sey	0.107	-22.8
011747.9+361042	01 17 49.45	36 10 26.2	24	24.5	0.056	0.10	0.53	0	16.5	18.7
011848.2+383626	01 18 49.48	38 36 19.6	15	16.3	0.059	0.00	-0.46	19	16.4	16.8	QSO	0.216	-23.8
012028.0+384918	01 20 26.39	38 49 15.5	28	19.0	0.089	1.00	0.29	62	16.4	17.4
012556.6+351039	01 25 55.96	35 10 36.9	13	8.1	0.059	0.68	0.38	0	15.6	17.3	QSO	0.312	-24.2
012923.0+223100	01 29 22.48	22 31 10.6	12	12.8	0.058	0.65	0.16	0	16.4	17.0	QSO	0.231	-23.8
013632.9+390556	01 36 32.60	39 05 59.1	7	4.7	0.750	0.76	0.22	8	14.9	15.9	BL
013738.5+852414	01 37 37.21	85 24 10.7	8	3.7	0.061	0.77	0.41	0	16.3	17.0	QSO	0.499	-25.5
013853.1+252325	01 38 52.82	25 23 25.2	9	3.8	0.532	-0.93	1.00	28	15.9	15.5	WD
014023.0+240255	01 40 22.91	24 02 51.3	13	3.9	0.140	0.79	-0.05	27	15.9	17.0	Sey	0.072	-21.2
014025.2+382400	01 40 24.35	38 24 09.3	9	13.6	0.212	0.39	0.00	7	16.1	16.9	Sey	0.067	-21.1
014732.3+345358	01 47 32.37	34 53 54.4	8	3.7	0.182	-0.30	0.23	0	14.2	16.9	M
015505.4+335452	01 55 06.26	33 55 12.0	20	22.7	0.222	1.00	0.33	77	16.2	18.8	CL	0.092

 

Table 2: continued

ROSAT name	RA	Dec	P.E	D	CR	HR1	HR2	ext	R	B	ID	z	MB
1RXS J	(2000)	(2000)	('')	('')	(cts s-1)			('')
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)
015536.7+311525	01 55 36.05	31 15 18.0	14	10.9	0.055	0.18	-0.34	0	15.9	17.3	Sey	0.135	-22.3
015546.4+071902	01 55 46.39	07 19 03.8	14	1.8	0.076	0.71	0.09	15	15.4	17.7	Sey	0.069	-20.4
015555.6+040620	01 55 55.28	04 06 19.3	10	4.8	0.094	0.40	0.42	13	15.9	17.6	Sey	0.136	-22.0
015621.6+241838	01 56 21.37	24 18 37.4	11	3.2	0.065	0.90	-0.07	0	16.3	17.0	Sey	0.155	-22.9
020348.7+295921	02 03 48.66	29 59 26.3	7	5.3	0.539	-0.96	-1.00	5	16.0	15.5	CV
022851.6+335949	02 28 53.21	33 59 40.7	37	21.7	0.080	0.93	0.22	81	15.5	16.1
	02 28 53.70	34 00 20.2	37	40.7	0.080	0.93	0.22	81	16.0	20.2	CL	0.19
	02 28 51.33	33 59 10.6	37	38.5	0.080	0.93	0.22	81	16.1	17.8
023601.9+082124	02 36 01.37	08 21 27.2	9	8.5	0.092	0.23	0.20	5	16.1	17.3	QSO	0.228	-23.5
023739.9+181945	02 37 40.49	18 19 41.8	12	9.0	0.099	1.00	0.55	0	15.9	16.4	QSO	0.168	-23.7
024214.5+074442	02 42 14.20	07 44 53.3	16	12.1	0.098	0.74	0.17	25	16.3	16.5	QSO	0.451	-25.8
033522.6+190739	03 35 22.59	19 07 28.5	8	10.5	0.281	0.98	0.44	9	15.8	17.1	QSO	0.189	-23.2
034308.0+185836	03 43 08.30	18 58 25.5	12	11.3	0.183	0.99	0.42	25	15.4	16.7	Sey	0.110	-22.4
034314.1+102941	03 43 14.26	10 29 39.3	9	2.9	0.210	-0.95	-0.01	0	16.5	16.6	WD
035147.6+103618	03 51 47.81	10 36 07.5	9	10.9	0.095	0.90	0.00	9	16.5	17.6	Sey	0.185	-22.7
035345.9+195825	03 53 46.24	19 58 25.6	12	4.8	0.126	0.90	0.21	17	9.7	12.6	Sey	0.029	-23.7
	03 53 46.53	19 58 17.8		11.4					16.1	17.9
040513.2+173647	04 05 13.29	17 36 43.4	10	3.8	0.097	1.00	0.59	0	16.1	20.0	Sey	0.098	-18.9
041147.1+132417	04 11 46.89	13 24 16.6	9	3.1	0.077	0.77	0.01	0	15.9	17.4	QSO	0.277	-23.8
044428.6+122113	04 44 28.77	12 21 11.6	9	2.9	0.162	0.98	0.17	6	15.2	16.2	Sey	0.089	-22.5
062334.6+644542	06 23 35.13	64 45 36.2	9	6.7	0.259	0.87	0.30	9	16.0	17.2	Sey	0.086	-21.4
062518.2+733433	06 25 16.23	73 34 38.9	9	10.2	0.180	-0.32	-0.02	14	14.5	14.8	CV
065136.5+563732	06 51 36.66	56 37 36.7	12	4.9	0.054	0.72	-0.14	0	16.7	16.8	QSO	0.286	-24.5
	06 51 36.78	56 37 20.7		11.5					16.4	18.5
065211.3+553436	06 52 11.62	55 34 34.0	9	3.4	0.151	0.91	0.27	10	15.2	16.8	Sey	0.064	-21.1
071006.0+500243	07 10 06.75	50 02 45.9	12	7.8	0.123	0.83	0.33	0	16.3	16.8	QSO	0.154	-23.1
071339.7+382043	07 13 40.30	38 20 39.7	8	7.8	0.120	0.75	0.12	0	14.8	16.0	QSO	0.123	-23.4
071858.2+705920	07 18 57.72	70 59 21.1	10	2.6	0.082	0.22	0.27	0	15.6	17.4	Sey	0.066	-20.6
071923.7+570840	07 19 24.28	57 08 39.8	9	4.7	0.184	0.70	0.18	9	15.4	0.7	QSO	0.175	-24.1
072220.6+732041	07 22 22.63	73 20 35.3	14	10.4	0.065	-0.29	-0.59	17	16.0	17.6	QSO	0.350	-24.1
072408.4+355309	07 24 08.82	35 53 06.2	8	5.8	0.260	0.47	-0.05	10	16.1	16.6	QSO	0.138	-23.1
072826.6+303407	07 28 26.68	30 34 12.6	12	5.7	0.069	0.55	0.27	17	16.0	17.4	Sey	0.100	-21.5
072912.9+410552	07 29 12.22	41 05 50.9	10	7.8	0.112	0.82	-0.03	14	15.9	17.1	Sey	0.103	-21.9
073152.4+280423	07 31 52.28	28 04 21.2	9	2.4	0.215	0.67	0.05	17	15.7	17.0
	07 31 52.72	28 04 33.0	9	10.9	0.215	0.67	0.05	17	16.5	19.1	CL	0.25
073221.5+313750	07 32 21.31	31 37 41.4	11	8.9	0.364	0.81	0.34	55	16.6	20.7	CL	0.17
073308.7+455511	07 33 09.27	45 55 05.6	8	8.0	0.273	0.83	0.14	13	15.5	16.2	QSO	0.142	-23.5
073720.4+351752	07 37 20.94	35 17 40.9	14	12.9	0.090	0.64	0.57	0	15.8	18.9	BL can	0.213

 

Table 2: continued

ROSAT name	RA	Dec	P.E	D	CR	HR1	HR2	ext	R	B	ID	z	MB
1RXS J	(2000)	(2000)	('')	('')	(cts s-1)			('')
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)
073735.8+430856	07 37 35.58	43 08 51.0	10	5.6	0.056	1.00	0.06	0	16.4	17.6	Sey	0.119	-22.9
074003.8+240621	07 40 03.52	24 06 15.7	11	6.5	0.077	0.54	0.13	0	15.5	17.1
074228.1+465648	07 42 27.06	46 56 42.6	18	11.9	0.085	1.00	0.14	27	16.5	17.3	Sey	0.170	-22.8
074311.3+742926	07 43 12.57	74 29 36.0	10	11.2	0.139	0.18	0.50	11	16.2	17.0	QSO	0.332	-24.6
074759.2+205229	07 47 59.16	20 52 26.5	9	2.6	0.112	0.62	0.28	0	15.3	15.8	QSO	0.156	-24.1
074906.2+451039	07 49 06.51	45 10 33.9	9	6.1	0.109	0.79	0.56	6	15.8	16.1	QSO	0.192	-24.3
075026.6+270726	07 50 26.36	27 07 16.7	11	9.8	0.066	0.40	0.10	0	16.3	17.6	Sey	0.154	-22.3
075039.5+624205	07 50 40.40	62 42 12.4	9	9.7	0.091	0.23	0.32	0	16.5	17.9	Sey	0.194	-22.5
075124.3+173044	07 51 25.08	17 30 51.1	12	13.2	0.151	0.76	0.07	30	15.7	19.4	CL	0.186
075408.7+431611	07 54 07.97	43 16 10.7	8	8.0	0.122	0.48	0.19	0	16.5	17.4	QSO	0.350	-24.3
075409.5+512436	07 54 09.65	51 24 28.7	26	7.4	0.054	0.43	0.67	50	17.0	17.5	QSO	0.331	-24.1
	07 54 11.95	51 24 16.8		29.9					15.7	17.3
075634.7+362232	07 56 34.65	36 22 14.8	12	17.2	0.060	0.43	0.08	0	16.7	17.3	QSO	0.884	-26.7
	07 56 34.90	36 22 42.6		10.9				0	16.0	16.9
075910.0+115152	07 59 10.43	11 51 56.4	10	7.7	0.154	-0.23	-0.25	0	15.0	16.7	Sey	0.050	-20.7
080132.3+473618	08 01 31.96	47 36 15.8	8	4.1	0.317	0.45	0.29	0	15.2	15.9	QSO	0.157	-24.1
080358.9+433248	08 03 59.24	43 32 58.1	12	10.7	0.071	-0.11	0.29	9	17.2	17.7	QSO	0.451	-24.6
	08 03 59.04	43 32 36.8		11.3					16.1	17.7
080534.6+543132	08 05 34.84	54 31 30.2	8	2.8	0.163	0.09	-0.01	0	14.9	15.5	QSO	0.406	-26.5
080548.5+112617	08 05 48.05	11 26 06.1	8	12.7	0.208	-0.45	0.56	0	15.1	16.8
	08 05 48.84	11 26 17.2	8	5.0	0.208	-0.45	0.56	0	16.5	17.4	Sey	0.144	-22.3
080625.5+593105	08 06 25.87	59 31 06.6	8	3.2	0.190	0.74	0.27	11	16.0	17.9	BL
080639.9+724831	08 06 39.00	72 48 20.1	27	11.6	0.148	0.18	0.39	35	15.9	17.1	Sey	0.099	-21.8
080727.2+140534	08 07 27.31	14 05 37.1	13	3.5	0.147	0.26	0.61	0	14.6	16.6	Sey	0.074	-21.6
081010.6+351718	08 10 12.82	35 17 21.7	35	27.4	0.091	0.43	0.58	55	15.2	17.6	CL	0.085
	08 10 12.23	35 17 18.3	35	20.0	0.091	0.43	0.58	55	15.8	18.4
081021.3+421657	08 10 22.51	42 16 41.9	26	20.2	0.138	1.00	0.28	91	16.1	18.3	CL	0.065
	08 10 21.33	42 17 12.6		15.6					16.4	19.2
081237.9+435636	08 12 37.80	43 56 34.9	13	1.5	0.098	0.69	0.12	22	15.9	17.4	Sey	0.183	-22.9
081502.4+525304	08 15 01.81	52 52 55.3	8	10.2	0.160	0.27	0.24	0	15.6	16.6	Sey	0.126	-22.9
081651.4+180252	08 16 51.13	18 02 49.5	9	4.6	0.267	0.36	0.10	11	16.2	17.8	Sey	0.158	-22.1
081718.6+520200	08 17 18.54	52 01 47.7	11	12.3	0.072	0.59	0.18	0	15.8	17.1	Sey	0.040	-19.8
081738.0+242333	08 17 38.33	24 23 29.7	12	5.6	0.074	0.60	0.34	0	16.3	17.7	QSO	0.283	-23.5
082100.4+075146	08 21 00.83	07 51 26.4	20	20.6	0.195	0.80	0.26	65	16.3	18.9	CL	0.110
082556.9+041504	08 25 57.78	04 14 47.9	19	20.8	0.107	0.53	0.41	21	16.1	19.3	CL	0.226
082633.1+074259	08 26 33.53	07 42 48.0	12	12.7	0.089	-0.95	0.00	0	16.4	17.3	QSO	0.312	-24.2
082814.5+415359	08 28 14.20	41 53 51.0	10	8.7	0.089	0.75	0.24	10	15.8	18.9	BL can	0.223
082904.3+074335	08 29 04.63	07 43 39.7	18	6.8	0.057	0.54	0.61	0	15.4	17.1

 

Table 2: continued

ROSAT name	RA	Dec	P.E	D	CR	HR1	HR2	ext	R	B	ID	z	MB
1RXS J	(2000)	(2000)	('')	('')	(cts s-1)			('')
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)
082942.2+415442	08 29 42.64	41 54 36.4	12	7.5	0.094	0.85	-0.01	14	16.1	18.3	Sey	0.126	-21.2
083737.3+254746	08 37 37.11	25 47 49.6	9	4.4	0.065	1.00	0.24	0	16.1	18.0	Sey	0.080	-20.4
083820.6+241025	08 38 20.02	24 10 25.5	13	8.0	0.161	-0.05	0.19	0	17.4	18.8	Sey	0.043	-18.1
	08 38 21.29	24 10 40.0		17.7					15.5	17.8
084000.4+443752	08 40 00.13	44 37 37.7	26	14.6	0.081	-0.07	0.32	0	15.8	17.1
084026.2+033316	08 40 25.47	03 33 02.0	13	17.8	0.209	0.09	0.03	28	15.3	16.0	Sey	0.060	-21.8
084302.0+030226	08 43 02.93	03 02 18.8	12	15.7	0.103	-0.32	0.23	12	15.8	15.9	QSO	0.512	-26.6
084622.3+031318	08 46 22.56	03 13 22.4	10	5.9	0.184	0.03	0.13	0	15.9	16.9	Sey	0.107	-22.2
084658.3+704452	08 46 56.94	70 44 36.1	17	17.3	0.071	0.31	0.25	26	15.6	19.0	CL	0.181
084829.3+811145	08 48 27.81	81 11 47.9	10	4.5	0.118	-0.50	-0.32	10	15.6	18.7	BL can	0.175
084856.8+584150	08 48 55.97	58 41 54.1	16	7.6	0.066	0.64	-0.22	19	16.4	17.9	Sey	0.134	-21.7
084918.7+531806	08 49 17.31	53 17 55.7	12	16.2	0.056	0.35	0.53	9	15.6	16.9	Sey	0.112	-22.3
085233.3+422539	08 52 33.82	42 25 45.0	11	8.3	0.105	-0.24	-0.36	0	16.3	17.9	Sey	0.137	-21.7
085358.8+770054	08 53 59.44	77 00 54.6	8	2.2	0.192	-0.10	0.30	0	15.4	17.0	Sey	0.106	-22.1
085443.8+401912	08 54 43.65	40 19 07.4	8	4.9	0.094	0.53	-0.05	0	15.6	16.6	QSO	0.152	-23.3
085706.2+621050	08 57 05.18	62 10 47.6	10	7.5	0.086	0.79	0.48	13	16.0	19.1	Sey	0.160	-20.9
085820.6+642100	08 58 20.56	64 20 48.6	13	11.4	0.072	0.56	0.18	14	16.1	17.9	Sey	0.115	-21.3
085902.0+484611	08 59 02.84	48 46 09.0	7	8.5	0.645	-0.13	0.09	7	14.3	15.0	QSO	0.083	-23.5
190910.3+665222	19 09 10.85	66 52 21.2	7	3.4	0.085	0.09	0.02	11	16.4	17.3	QSO	0.191	-23.0
193708.3+660821	19 37 08.16	66 08 21.2	7	0.9	0.147	0.87	0.17	11	15.3	16.7
193929.8+700752	19 39 29.37	70 07 49.2	7	3.6	0.263	0.87	0.13	14	15.4	16.1	QSO	0.116	-23.1
194017.2+680738	19 40 17.24	68 07 29.9	12	8.1	0.061	0.97	0.23	38	15.5	20.1	CL	0.17
194639.7+704552	19 46 40.58	70 45 57.7	8	7.2	0.081	0.95	0.35	10	15.2	16.9
	19 46 38.14	70 45 56.1		8.7					13.4	15.0	CV
210452.8+140134	21 04 53.36	14 01 29.8	20	8.9	0.141	1.00	0.18	77	16.5	20.0	CL	0.20
	21 04 53.14	14 01 30.3		6.0					14.6	18.2
210550.5+041435	21 05 50.86	04 14 38.8	11	6.5	0.054	0.80	-0.12	0	16.4	17.8	Sey	0.139	-21.9
212654.3+112403	21 26 53.95	11 24 00.8	9	5.6	0.156	0.69	0.00	15	15.4	16.7	Sey	0.096	-22.2
214309.6+153658	21 43 09.24	15 37 06.1	11	4.6	0.104	0.90	0.22	0	16.2	16.7	QSO	0.385	-25.3
214655.2+092102	21 46 54.12	09 20 48.6	21	20.9	0.072	0.90	-0.04	36	16.4	16.7	QSO	0.984	-27.5
214923.8+092921	21 49 24.22	09 29 27.9	15	9.3	0.068	0.76	-0.15	16	16.3	16.5
215853.4+244206	21 58 52.21	24 42 14.4	16	18.3	0.070	0.40	0.00	0	15.3	15.9
215912.7+095247	21 59 12.35	09 52 43.4	8	6.3	0.245	0.49	0.15	0	14.9	16.2	Sey	0.102	-22.7
	21 59 12.35	09 52 42.2		7.1					15.2	16.9
221513.4+171524	22 15 14.01	17 15 23.9	10	8.7	0.113	0.06	0.27	10	15.6	17.7
221537.8+290239	22 15 36.85	29 02 36.0	15	12.8	0.112	0.86	0.09	36	16.2	16.5	QSO	0.229	-24.3
221631.2+290025	22 16 31.29	29 00 16.1	10	6.8	0.099	0.92	0.10	16	15.1	16.1	CV
221918.8+120757	22 19 18.54	12 07 52.7	9	5.7	0.248	0.04	-0.45	14	15.7	17.0	Sey	0.082	-21.5

 

Table 2: continued

ROSAT name	RA	Dec	P.E	D	CR	HR1	HR2	ext	R	B	ID	z	MB
1RXS J	(2000)	(2000)	('')	('')	(cts s-1)			('')
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)
221944.6+212054	22 19 45.25	21 20 48.7	10	10.5	0.080	0.34	0.21	0	15.6	17.0	BL can	0.20
222537.5+225917	22 25 37.55	22 59 26.3	12	9.3	0.060	0.39	0.23	9	16.1	16.1	QSO	0.173	-24.1
222657.0+254946	22 26 55.92	25 50 09.1	25	27.3	0.101	1.00	-0.12	82	15.7	19.7	CL	0.17
	22 26 56.06	25 49 39.1		14.4					17.3	18.0
222846.3+333500	22 28 46.34	33 35 07.8	8	7.8	0.113	0.66	0.33	5	14.9	15.9	Sey	0.090	-22.8
222934.3+305720	22 29 34.15	30 57 12.1	12	8.1	0.073	0.79	-0.02	19	16.4	17.1	QSO	0.319	-24.4
223019.5+163114	22 30 19.67	16 31 12.4	8	3.0	0.159	0.54	0.26	8	15.0	16.0	Sey	0.084	-22.5
224621.7+314206	22 46 21.68	31 42 07.6	8	1.6	0.146	0.83	-0.07	4	15.8	17.1	Sey	0.145	-22.6
224939.6+110016	22 49 39.57	11 00 29.2	9	13.2	0.184	0.44	0.07	0	14.8	15.7	Sey	0.084	-22.8
225148.5+341937	22 51 47.79	34 19 30.3	7	11.0	0.254	0.83	0.04	10	16.3	16.8	Sey	0.132	-22.8
225209.6+264236	22 52 09.37	26 42 40.7	9	5.6	0.133	0.45	-0.04	0	15.2	16.0	Sey	0.069	-22.1
225453.7+241449	22 54 53.54	24 14 41.0	14	8.3	0.064	-0.27	0.16	0	16.1	17.8
	22 54 55.03	24 14 45.3		18.6					13.5	16.3	M
225639.4+261846	22 56 39.18	26 18 43.1	9	4.1	0.055	0.77	0.22	0	16.2	18.1	Sey	0.176	-22.1
230325.2+075642	23 03 25.03	07 56 43.6	15	2.9	0.165	0.68	0.32	41	16.2	18.9	CL	0.16
230328.0+144341	23 03 27.92	14 43 49.0	15	8.1	0.109	0.96	0.16	11	14.7	16.4	Sey	0.080	-22.0
230949.6+213523	23 09 49.28	21 35 19.0	9	6.0	0.212	0.20	0.30	18	15.7	17.9	CV
231107.7+113812	23 11 06.14	11 38 29.2	29	28.4	0.065	1.00	0.61	62	16.5	20.2	CL	0.26
231456.0+224325	23 14 55.89	22 43 23.4	9	2.2	0.109	0.82	0.10	10	15.7	16.5	QSO	0.171	-23.6
231517.5+182825	23 15 17.08	18 28 14.4	11	12.2	0.085	0.72	0.64	0	15.0	16.5	Sey	0.104	-22.5
232339.1+090842	23 23 38.98	09 08 50.6	23	8.8	0.128	0.47	0.24	71	14.8	19.9	CL	0.21
232554.6+215310	23 25 54.24	21 53 14.2	7	6.5	0.555	0.63	0.15	5	15.5	15.8	QSO	0.120	-23.5
232841.4+224853	23 28 41.41	22 48 47.9	19	5.1	0.082	0.72	-0.01	24	16.4	18.0	Sey	0.129	-21.5
232953.9+062814	23 29 54.38	06 28 10.2	11	8.1	0.064	0.46	0.84	0	15.6	16.6	CV
233152.6+195735	23 31 51.98	19 56 48.0	43	47.8	0.993	0.05	0.11	0	13.6	15.1	M
233315.8+225539	23 33 15.61	22 55 49.5	26	10.8	0.120	0.96	0.17	86	16.4	18.6	CL	0.07
234456.7+091149	23 44 57.45	09 11 35.3	13	17.6	0.637	0.96	0.18	106	13.5	15.9	CL	0.04
234728.8+242743	23 47 28.77	24 27 45.8	7	2.8	0.262	0.75	0.26	10	15.9	16.5	QSO	0.159	-23.5
234734.6+271910	23 47 35.24	27 19 00.6	13	12.7	0.071	0.93	0.45	0	15.9	16.1	QSO	0.646	-27.0
235034.7+292924	23 50 35.65	29 29 19.7	12	13.0	0.122	0.87	-0.04	0	16.0	19.5	CL	0.153
235152.7+261938	23 51 52.87	26 19 32.1	8	6.3	0.338	0.56	0.17	9	14.9	16.6	Sey	0.040	-21.3
235754.3+132418	23 57 53.82	13 24 09.6	9	11.0	0.235	0.13	0.03	14	15.3	15.8	QSO	0.115	-23.4

The abbreviations have the following meanings:
"QSO'': quasi-steller object (unresolved or resolved object with M_B < 23 showing a Seyfert 1 spectrum).
"Sey'': Seyfert galaxy.
"BL'': BL Lac object.
"BL can'': BL Lac candidate.
"CL'': cluster of galaxies.
"WD'': white dwarf.
"CV'': cataclysmic variable star.
"M'': M star.
Column (13): Average redshift for extragalactic counterpart.
Column (14): Absolute B magnitude calculated with the formula used by Véron-Cetty & Véron (1996) for emission line AGN.

Acknowledgements

We would like to thank L. Cao and X.J. Jiang for their helpful support during the observations. We also thank the anonymous referee for valuable comments and suggestions. The ROSAT project is supported by the Ministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF/DARA) and by the Max-Planck-Gesellschaft (MPG). This research made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institue of Technology, under contract with the National Aeronautics and Space Administration.