1998A&A...329..495S

Query : 1998A&A...329..495S

1998A&A...329..495S - Astronomy and Astrophysics, volume 329, 495-503 (1998/1-2)

The ROSAT deep survey. II. Optical identification, photometry and spectra of X-ray sources in the Lockman field.

SCHMIDT M., HASINGER G., GUNN J., SCHNEIDER D., BURG R., GIACCONI R., LEHMANN I., MacKENTY J., TRUEMPER J. and ZAMORANI G.

Abstract (from CDS):

The ROSAT Deep Survey includes a complete sample of 50 X-ray sources with fluxes in the 0.5-2keV band larger than 5.5x10–15erg/cm2/s in the Lockman field (Hasinger et al., Paper I). We have obtained deep broad-band CCD images of the field and spectra of many optical objects near the positions of the X-ray sources. We define systematically the process leading to the optical identifications of the X-ray sources. For this purpose, we introduce five identification (ID) classes that characterize the process in each case. Among the 50 X-ray sources, we identify 39 AGNs, 3 groups of galaxies, 1 galaxy and 3 galactic stars. Four X-ray sources remain unidentified so far; two of these objects may have an unusually large ratio of X-ray to optical flux.

Abstract Copyright: ∼

Journal keyword(s): surveys - galaxies: active - quasars: emission lines - galaxies: Seyfert - X-rays: galaxies

Nomenclature: Table 1: RDS NNNA N=46

Simbad objects: 53

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Number of rows : 53
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 [VV98] J105009.4+571443 QSO 10 50 09.2843216280 +57 14 44.261564496   21.08 20.87     ~ 11 0
2 2XMM J105009.5+573145 Sy1 10 50 09.5330050656 +57 31 43.960092204     20.70     ~ 9 0
3 [VV98] J105016.1+571953 QSO 10 50 15.9565843584 +57 19 54.414164388   21.32 20.85     ~ 13 0
4 [VV98] J105019.8+572812 QSO 10 50 19.7237 +57 28 12.866     18.70     ~ 16 0
5 RDS 56D Sy1 10 50 20.082 +57 14 22.06           ~ 10 0
6 [VV98] J105039.6+572337 QSO 10 50 39.5438741904 +57 23 36.609192456   19.85 19.55 19.14   ~ 46 0
7 RX J1050.7+5717 SyG 10 50 46.02216 +57 17 33.8352           ~ 11 0
8 RDS 67B GrG 10 50 54.3 +57 06 52           ~ 3 0
9 RX J1050.9+5706 SyG 10 50 56.11224 +57 06 48.2004           ~ 7 1
10 [VV98] J105104.0+573054 QSO 10 51 03.930 +57 30 54.72     20.30     ~ 13 0
11 RDS 43A AGN 10 51 05.1 +57 19 23           ~ 10 0
12 2XMM J105108.2+573345 AGN 10 51 08.38 +57 33 45.4           ~ 14 0
13 2XMM J105114.4+571615 AGN 10 51 14.414 +57 16 15.74   22.59 21.61     ~ 10 0
14 RDS 51L AGN 10 51 17.0 +57 15 51           ~ 7 0
15 RDS 46A AGN 10 51 20.10 +57 18 48.9           ~ 12 0
16 RDS 61B AGN 10 51 26.3 +57 11 31           ~ 7 0
17 [BCH2008] 444 PM* 10 51 30.9358892064 +57 34 39.630370584   17.11       M5Ve? 14 0
18 2XMM J105137.3+573043 AGN 10 51 37.302 +57 30 42.98           ~ 13 0
19 SDSS J105148.73+573248.7 AGN 10 51 48.732 +57 32 48.71     23.2 22.90   ~ 27 0
20 2XMM J105154.3+573437 Sy1 10 51 54.377 +57 34 37.79     20.00     ~ 19 0
21 TYC 3826-786-1 PM* 10 52 01.1920926120 +57 10 44.482721340   11.98 10.98     K0V 9 0
22 2MASS J10520626+5715245 AGN 10 52 06.2807459376 +57 15 23.712201684           ~ 11 0
23 2XMM J105216.8+572017 AGN 10 52 16.95 +57 20 18.0           ~ 13 0
24 2XMM J105224.5+573009 AGN 10 52 24.615 +57 30 09.41           ~ 16 0
25 2XMM J105225.0+572304 AGN 10 52 25.046 +57 23 05.19           ~ 13 0
26 [VV98] J105230.1+573913 QSO 10 52 30.0812803008 +57 39 13.483856772   21.75 21.00     ~ 17 0
27 RDS 116 rG 10 52 37.0 +57 30 58     21.8     ~ 11 0
28 RDS 58B GrG 10 52 38.8 +57 13 00           ~ 5 0
29 [VV98] J105239.6+572432 QSO 10 52 39.5958253296 +57 24 31.425574788   18.39 18.07     ~ 76 0
30 2XMM J105242.2+573158 Sy1 10 52 42.38 +57 31 58.3     25.2 25.00   ~ 18 0
31 [VV98] J105243.3+571545 QSO 10 52 43.1559083808 +57 15 44.442070236   20.66 20.46     ~ 24 0
32 [VV98] J105244.8+572123 QSO 10 52 44.7211227504 +57 21 22.457174220   21.18 20.86     ~ 25 0
33 RDS 47A AGN 10 52 45.0 +57 17 33           ~ 8 0
34 2XMM J105247.9+572116 Sy1 10 52 48.0450883248 +57 21 16.654430304   20.84 20.34     ~ 26 0
35 [VV98] J105248.5+571206 QSO 10 52 48.329 +57 12 05.66     21.60     ~ 8 0
36 [VV98] J105257.3+572507 QSO 10 52 57.1388606136 +57 25 06.850948620   22.09 21.48     ~ 23 0
37 [VV98] J105259.3+573030 QSO 10 52 59.163 +57 30 29.98     21.70     ~ 16 0
38 [VV98] J105307.4+571505 QSO 10 53 07.3241878632 +57 15 04.632919200     20.30     ~ 24 0
39 [VV98] J105316.9+573552 QSO 10 53 16.7644541304 +57 35 50.730680004   19.97 19.47     ~ 67 0
40 [VV2010c] J105318.7+572042 AGN 10 53 18.6122820576 +57 20 44.589006888           ~ 10 1
41 MCXC J1053.3+5720 ClG 10 53 18.97 +57 20 44.7           ~ 21 0
42 SDSS J105319.02+571851.8 AGN 10 53 19.023 +57 18 51.81     21.3 20.84   ~ 19 0
43 LEDA 3095998 Sy1 10 53 24.6642123384 +57 12 31.015505340           ~ 16 0
44 2XMM J105329.3+572104 AGN 10 53 29.409 +57 21 04.20           ~ 17 0
45 [VV98] J105331.8+572454 QSO 10 53 31.7346910536 +57 24 54.112156956   20.32 20.20     ~ 22 0
46 2XMM J105334.9+572542 AGN 10 53 35.0308257600 +57 25 42.141068976     19.50     ~ 25 0
47 2XMM J105339.6+573104 Sy1 10 53 39.7417789968 +57 31 04.402572060   19.97 19.79     ~ 23 0
48 [VV98] J105345.0+572840 QSO 10 53 44.864 +57 28 40.36   21.27 21.19     ~ 23 0
49 SDSS J105348.77+573034.0 AGN 10 53 48.774 +57 30 34.08     23.3     ~ 17 0
50 [VV98] J105350.3+572710 QSO 10 53 50.2208736432 +57 27 09.506758536   20.68 20.56     ~ 23 0
51 RDS 20 mul 10 54 10.3 +57 30 39           ~ 4 0
52 RDS 20C * 10 54 10.3337402856 +57 30 37.932944508   18.203 16.848 16.276   M5Ve? 9 0
53 SDSS J105421.19+572544.2 Sy1 10 54 21.1984001400 +57 25 44.284004364       18.80   ~ 43 0

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