2000MNRAS.318.1073P

Query : 2000MNRAS.318.1073P

2000MNRAS.318.1073P - Mon. Not. R. Astron. Soc., 318, 1073-1085 (2000/November-2)

A survey of hard spectrum ROSAT sources - I. X-ray source catalogue.

PAGE M.J., MITTAZ J.P.D. and CARRERA F.J.

Abstract (from CDS):

We present a catalogue of 147 serendipitous X-ray sources selected to have hard spectra (α<0.5) from a survey of 188 ROSAT fields. Such sources must be the dominant contributors to the X-ray background at faint fluxes. We have used Monte Carlo simulations to verify that our technique is very efficient at selecting hard sources: the survey has ≥10 times as much effective area for hard sources as it has for soft sources above a 0.5-2keV flux level of 10–14erg.cm–2.s–1. The distribution of best-fitting spectral slopes of the hard sources suggests that a typical ROSAT hard source in our survey has a spectral slope α∼0. The hard sources have a steep number flux relation (dN/dS∝S–γ with a best-fitting value of γ=2.72±0.12) and make up about 15per cent of all 0.5-2keV sources with S>10–14erg.cm–2.s–1. If their N(S) continues to fainter fluxes, the hard sources will comprise ∼40per cent of sources with 5x10–15<S<10–14erg.cm–2.s–1. The population of hard sources can therefore account for the harder average spectra of ROSAT sources with S<10–14erg.cm–2.s–1. They probably make a strong contribution to the X-ray background at faint fluxes and could be the solution to the X-ray background spectral paradox.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): catalogues - surveys - X-rays: general

VizieR on-line data: <Available at CDS (J/MNRAS/318/1073): table2.dat>

Nomenclature: Table 2: [PMC2000] RX JHHMMSS.ss+DDMMSS.s N=147.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 144

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Number of rows : 144
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [PMC2000] RX J000417.24-255915.1 X 00 04 17.24 -25 59 15.1           ~ 1 0
2 [PMC2000] RX J000721.30+204326.5 X 00 07 21.30 +20 43 26.5           ~ 1 0
3 [PMC2000] RX J001111.73-361840.1 X 00 11 11.73 -36 18 40.1           ~ 1 0
4 [VV2006] J001144.5-362639 Sy1 00 11 44.5683150264 -36 26 39.285262932     20.38     ~ 5 0
5 QSO B0044-2059 QSO 00 46 51.8262708456 -20 43 28.522745040   18.7 19.00     ~ 19 0
6 [PMC2000] RX J005726.44+270124.4 X 00 57 26.44 +27 01 24.4           ~ 1 0
7 [PMC2000] RX J005732.46-273005.8 X 00 57 32.46 -27 30 05.8           ~ 1 0
8 SDSS J005736.44+302355.7 QSO 00 57 36.4380061608 +30 23 55.758597648           ~ 8 0
9 Shanks SGP4X:069 AGN 00 57 36.7 -27 33 04   20.25       ~ 7 0
10 [PMC2000] RX J005734.78-272827.4 X 00 57 37.94 -27 28 28.0           ~ 5 0
11 MCG-05-03-020 EmG 00 57 46.9455374760 -27 30 06.078979368   13.49 9.69 12.38 13.1 ~ 58 0
12 Shanks SGP4X:091 AGN 00 58 01.3 -27 53 09   21.33       ~ 6 0
13 [PMC2000] RX J005808.69-273535.2 X 00 58 08.69 -27 35 35.2           ~ 1 0
14 [PMC2000] RX J005830.02+263921.9 X 00 58 30.02 +26 39 21.9           ~ 1 0
15 [PMC2000] RX J010742.15+322642.5 X 01 07 42.15 +32 26 42.5           ~ 1 0
16 [PMC2000] RX J010908.73+192759.5 X 01 09 08.73 +19 27 59.5           ~ 1 0
17 [PMC2000] RX J013707.63-183846.4 * 01 37 07.75 -18 38 49.9           ~ 2 0
18 [PMC2000] RX J013717.52-182716.9 X 01 37 17.52 -18 27 16.9           ~ 1 0
19 LEDA 3095540 Sy1 01 41 59.8308395881 -54 30 39.731670316     17.38     ~ 5 0
20 [PMC2000] RX J021658.11-173203.3 X 02 16 58.11 -17 32 03.3           ~ 1 0
21 [PMC2000] RX J023313.71+005536.0 X 02 33 13.71 +00 55 36.0           ~ 1 0
22 2XMM J023851.6-520956 AGN 02 38 51.7261196352 -52 09 57.029043564   17.91   16.66   ~ 3 0
23 [PMC2000] RX J025753.52+194442.2 X 02 57 53.52 +19 44 42.2           ~ 1 0
24 [PMC2000] RX J025755.08+194255.5 X 02 57 55.08 +19 42 55.5           ~ 1 0
25 [PMC2000] RX J031043.21-472033.4 X 03 10 43.21 -47 20 33.4           ~ 1 0
26 [PMC2000] RX J031114.91-473150.0 X 03 11 14.91 -47 31 50.0           ~ 1 0
27 [GZD97] 1.4 38 rG 03 14 56.33 -55 20 05.7           ~ 4 0
28 [PMC2000] RX J031956.76-663938.5 X 03 19 56.76 -66 39 38.5           ~ 1 0
29 [VV2006] J033339.5-391841 QSO 03 33 39.5513814744 -39 18 41.675340240     19.42     ~ 7 0
30 [PMC2000] RX J033350.25-390850.9 X 03 33 50.25 -39 08 50.9           ~ 1 0
31 PKS 0332-39 rG 03 34 03.32236 -39 00 36.2182   16.03 16.03     ~ 45 0
32 [PMC2000] RX J033729.08-253056.2 X 03 37 29.08 -25 30 56.2           ~ 1 0
33 [PMC2000] RX J033736.63-252052.2 X 03 37 36.63 -25 20 52.2           ~ 1 0
34 [PMC2000] RX J033827.42-252400.0 X 03 38 27.42 -25 24 00.0           ~ 1 0
35 [PMC2000] RX J034043.77-183457.5 X 03 40 43.77 -18 34 57.5           ~ 1 0
36 [PMC2000] RX J034110.98-445654.0 X 03 41 10.98 -44 56 54.0           ~ 1 0
37 [VV2006c] J034119.3-441030 Sy1 03 41 16 -44 10.2   21.5 21.55     ~ 8 0
38 [PMC2000] RX J034130.14-450309.8 X 03 41 30.14 -45 03 09.8           ~ 1 0
39 [PMC2000] RX J034248.22-450507.2 X 03 42 48.22 -45 05 07.2           ~ 1 0
40 LEDA 3095690 Sy1 04 34 20.2123852872 -08 21 31.435450956   18.0       ~ 10 0
41 [PMC2000] RX J045304.40-531710.5 X 04 53 04.40 -53 17 10.5           ~ 1 0
42 ESO 33-2 Sy2 04 55 58.93368 -75 32 28.2336   14.61 14.60 13.39   ~ 177 1
43 BAX 082.1679-32.8606 ClG 05 28 40.1 -32 51 29           ~ 12 0
44 [PMC2000] RX J053018.72-462509.7 X 05 30 18.72 -46 25 09.7           ~ 1 0
45 [PMC2000] RX J053219.84-462550.5 X 05 32 19.84 -46 25 50.5           ~ 1 0
46 [PMC2000] RX J053242.79-462400.9 X 05 32 42.79 -46 24 00.9           ~ 1 0
47 2MASS J08264050+2631133 AGN 08 26 40.4972278848 +26 31 13.486992096     20.34     ~ 6 0
48 [PMC2000] RX J085240.51+134651.8 X 08 52 40.51 +13 46 51.8           ~ 1 0
49 2E 2070 Sy2 08 53 40.3729801473 +13 49 05.121335973     17.5     ~ 17 2
50 [PMC2000] RX J085420.79+135439.6 X 08 54 20.97 +13 54 39.6           ~ 1 0
51 [PMC2000] RX J085851.49+141150.7 AGN 08 58 50.7 +14 11 54     20.82     ~ 4 0
52 [PMC2000] RX J085906.68+140307.2 X 08 59 06.68 +14 03 07.2           ~ 1 0
53 [PMC2000] RX J085934.64+141457.6 X 08 59 34.64 +14 14 57.6           ~ 1 0
54 [PMC2000] RX J090518.27+335006.0 G 09 05 17.94 +33 50 16.1           ~ 2 0
55 RX J0909.3+4236 Sy1 09 09 23.8735444208 +42 36 23.988147495   18.66 18.03     ~ 9 0
56 [PMC2000] RX J090926.82+541429.2 X 09 09 26.82 +54 14 29.2           ~ 1 0
57 [PMC2000] RX J091006.80+425449.8 X 09 10 06.80 +42 54 49.8           ~ 1 0
58 [PMC2000] RX J091049.66+430405.5 X 09 10 49.66 +43 04 05.5           ~ 1 0
59 [PMC2000] RX J091908.27+745305.6 G 09 19 10.5998149546 +74 53 12.411161126           ~ 3 0
60 [PMC2000] RX J092103.75+621504.3 X 09 21 03.75 +62 15 04.3           ~ 2 0
61 2XMM J094144.6+385440 Sy1 09 41 44.6629288632 +38 54 39.717010872     21.11     ~ 17 0
62 [PMC2000] RX J094356.53+164244.1 X 09 43 56.53 +16 42 44.1           ~ 4 0
63 [PMC2000] RX J095029.49+733106.7 X 09 50 29.49 +73 31 06.7           ~ 1 0
64 [VV2000] J095341.3+074418 QSO 09 53 40.1395123872 +07 44 13.133756148     20.01     ~ 7 0
65 [PMC2000] RX J100923.93+543635.7 X 10 09 23.93 +54 36 35.7           ~ 1 0
66 [PMC2000] RX J100946.60+553658.3 X 10 09 46.60 +55 36 58.3           ~ 1 0
67 [PMC2000] RX J101008.53+513334.9 * 10 10 08.91 +51 33 31.0           ~ 2 0
68 [PMC2000] RX J101009.50+525901.5 X 10 10 09.05 +52 59 01.5           ~ 1 0
69 [PMC2000] RX J101028.63+512841.2 X 10 10 28.63 +51 28 41.2           ~ 1 0
70 [PMC2000] RX J101031.05+503458.6 X 10 10 31.05 +50 34 58.6           ~ 1 0
71 [PMC2000] RX J101033.47+533922.5 X 10 10 33.47 +53 39 22.5           ~ 2 0
72 [PMC2000] RX J101058.91+534005.8 X 10 10 58.91 +53 40 05.8           ~ 1 0
73 7C 1007+5559 QSO 10 11 12.2671 +55 44 47.572     21.02     ~ 15 1
74 [VV2006] J101122.7+524912 Sy1 10 11 22.6789170456 +52 49 12.668545560     20.86     ~ 12 0
75 LEDA 2383075 Sy1 10 11 48.3557031336 +50 50 00.571246512           ~ 9 0
76 [PMC2000] RX J101159.42+281407.7 X 10 11 59.42 +28 14 07.7           ~ 1 0
77 [PMC2000] RX J103133.93-142157.1 X 10 31 33.93 -14 21 57.1           ~ 1 0
78 [PMC2000] RX J103230.88-141925.2 X 10 32 30.88 -14 19 25.2           ~ 1 0
79 2MASS J10464888+5412187 * 10 46 48.8720528472 +54 12 18.780163560           ~ 2 0
80 [VV2006] J104723.5+540406 Sy1 10 47 23.5273985424 +54 04 06.904083000   19.34 19.02     ~ 29 0
81 [PMC2000] RX J110210.03+251418.8 X 11 02 10.03 +25 14 18.8           ~ 1 0
82 [PMC2000] RX J110228.24+250327.1 X 11 02 28.24 +25 03 27.1           ~ 1 0
83 [PMC2000] RX J110231.12+355342.7 X 11 02 31.12 +35 53 42.7           ~ 1 0
84 [PMC2000] RX J110244.57+250959.4 X 11 02 44.57 +25 09 59.4           ~ 1 0
85 [PMC2000] RX J110431.75+355208.5 X 11 04 31.75 +35 52 08.5           ~ 4 0
86 [PMC2000] RX J110452.52+360414.8 X 11 04 52.52 +36 04 14.8           ~ 1 0
87 [PMC2000] RX J110707.63+723634.8 X 11 07 07.63 +72 36 34.8           ~ 1 0
88 6C 110414+724854 BLL 11 07 41.72254730 +72 32 36.0050388     18.9 18.4   ~ 58 1
89 2XMM J111750.7+075710 Sy1 11 17 50.7542448144 +07 57 10.956715560     21.5     ~ 15 0
90 [PMC2000] RX J111926.34+210646.1 ClG 11 19 25.93 +21 06 47.4           ~ 2 0
91 [PMC2000] RX J111935.63+133407.4 X 11 19 35.63 +13 34 07.4           ~ 1 0
92 [VV2000] J111942.2+211516 QSO 11 19 42.1231688760 +21 15 16.767596412   20.93 20.18     ~ 25 0
93 [PMC2000] RX J112056.87+132726.2 * 11 20 57.48 +43 27 08.0           ~ 2 0
94 [PMC2000] RX J112838.96-041628.0 X 11 28 38.96 -04 16 28.0           ~ 1 0
95 [PMC2000] RX J113624.52+295952.8 X 11 36 24.52 +29 59 52.8           ~ 1 0
96 BAX 176.6121+28.9042 ClG 11 46 26.9 +28 54 19           ~ 16 0
97 [PMC2000] RX J114654.52+283939.9 X 11 46 54.52 +28 39 39.9           ~ 1 0
98 [PMC2000] RX J114708.66+283001.2 X 11 47 08.66 +28 30 01.2           ~ 1 0
99 [PMC2000] RX J114736.94+284131.4 X 11 47 36.94 +28 41 31.4           ~ 1 0
100 ClG J1159+5531 ClG 11 59 53.02 +55 32 22.8     15.64     ~ 100 1
101 ACO 1455 ClG 12 04 04.0 +28 07 08           ~ 56 0
102 [PMC2000] RX J120515.93-033424.6 X 12 05 15.93 -03 34 24.6           ~ 1 0
103 2MASXI J1210166+391816 AGN 12 10 16.6106694720 +39 18 16.999830360   15.5       ~ 18 0
104 ClG 1208+39 ClG 12 11 16.0 +39 11 41     19.8     ~ 38 0
105 3XMM J121804.5+470849 Sy1 12 18 04.5697329528 +47 08 50.137832148     21.04     ~ 21 0
106 [PMC2000] RX J121834.72+300957.2 X 12 18 34.72 +30 09 57.2           ~ 1 0
107 QSO B1246-0542 QSO 12 49 13.8611499816 -05 59 19.059589068   17.09 16.73     ~ 173 0
108 [PMC2000] RX J124919.66-060430.2 X 12 49 19.66 -06 04 30.2           ~ 1 0
109 SDSS J124949.78+405304.4 QSO 12 49 49.7934815592 +40 53 04.442007660           ~ 9 0
110 [PMC2000] RX J125447.96+563842.3 X 12 54 47.96 +56 38 42.3           ~ 1 0
111 [PMC2000] RX J125556.56+565850.9 X 12 55 56.56 +56 58 50.9           ~ 1 0
112 [PMC2000] RX J131047.80+322958.1 X 13 10 47.80 +32 29 58.1           ~ 1 0
113 2XMM J131634.7+285930 Sy1 13 16 34.7168633616 +28 59 29.823763524     18.8     ~ 19 0
114 [PMC2000] RX J131646.89+285721.1 X 13 16 46.89 +28 57 21.1           ~ 1 0
115 [PMC2000] RX J131651.64+291251.1 X 13 16 51.64 +29 12 51.1           ~ 1 0
116 [PMC2000] RX J131653.87+291708.8 X 13 16 53.87 +29 17 08.8           ~ 1 0
117 [PMC2000] RX J131721.79+291119.1 X 13 17 21.79 +29 11 19.1           ~ 1 0
118 [PMC2000] RX J133146.37+111420.4 * 13 31 45.93 +11 14 12.8           ~ 2 0
119 GSC 00895-00437 * 13 31 46.4482505927 +10 56 56.186626760   16.37 15.42 14.99   K7 4 0
120 LEDA 1391311 Sy2 13 31 52.2261967488 +11 16 49.687841064     16.7     ~ 33 0
121 [PMC2000] RX J133948.81+482111.5 X 13 39 48.81 +48 21 11.5           ~ 1 0
122 [PMC2000] RX J134335.29-001643.7 X 13 43 35.29 -00 16 43.7           ~ 1 0
123 [PMC2000] RX J134905.63+600037.4 X 13 49 05.63 +60 00 37.4           ~ 1 0
124 2XMM J135106.3+601539 AGN 13 51 06.4540718448 +60 15 38.872287396     20.53     ~ 6 0
125 2XMM J135529.5+182422 AGN 13 55 29.5347708480 +18 24 22.033215360   22.05 21.17     ~ 12 0
126 2MASS J14013456+5420310 G 14 01 34.5726135720 +54 20 31.140291588   18.7       ~ 6 0
127 3XMM J140416.7+541615 Sy1 14 04 16.7746006944 +54 16 14.987457948   20.28 19.66     ~ 20 0
128 [PMC2000] RX J142754.71+330007.0 G 14 27 54.564 +33 00 00.64       19.83 19.16 ~ 3 0
129 [PMC2000] RX J150132.45-082507.2 X 15 01 32.45 -08 25 07.2           ~ 1 0
130 2XMM J163054.9+781103 Sy1 16 30 55.1 +78 11 02     20.6     ~ 12 0
131 [VV2006] J163308.5+570254 QSO 16 33 08.5361620512 +57 02 55.083795936     20.06     ~ 11 0
132 ACO 2246 ClG 17 00 41.94 +64 13 16.9           ~ 52 0
133 [PMC2000] RX J170044.36+520545.6 X 17 00 44.36 +52 05 45.6           ~ 1 0
134 ClG J1701+6414 ClG 17 01 22.6 +64 14 09           ~ 78 0
135 [PMC2000] RX J171112.30+710924.7 X 17 11 12.30 +71 09 24.7           ~ 1 0
136 [VV2006] J204640.1-363148 QSO 20 46 40.1331542016 -36 31 48.132547500     18.76     ~ 6 1
137 NVSS J204716-364725 rG 20 47 16.7411036112 -36 47 23.465570100   16.79   15.50   ~ 7 0
138 ESO 287-42 Sy2 21 38 07.9500239424 -42 36 17.766535032   15.07   13.70   ~ 28 0
139 2MASS J22362045-2614367 * 22 36 20.4544996440 -26 14 36.826513728           ~ 2 0
140 [PMC2000] RX J223654.00-261230.6 X 22 36 54.00 -26 12 30.6           ~ 1 0
141 [PMC2000] RX J225018.97+242750.8 X 22 50 18.97 +24 27 50.8           ~ 1 0
142 [PMC2000] RX J230248.28+084348.1 X 23 02 48.28 +08 43 48.1           ~ 1 0
143 [PMC2000] RX J232505.73+234056.5 X 23 25 05.73 +23 40 56.5           ~ 1 0
144 Z 455-55 Sy1 23 51 13.9186421376 +20 13 46.461253980   16.35 15.41     ~ 41 0

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