2001MNRAS.324..427C

Query : 2001MNRAS.324..427C

2001MNRAS.324..427C - Mon. Not. R. Astron. Soc., 324, 427-442 (2001/June-3)

Infrared observations of serendipitous hard Chandra X-ray sources.

CRAWFORD C.S., FABIAN A.C., GANDHI P., WILMAN R.J. and JOHNSTONE R.M.

Abstract (from CDS):

We present observations of a sample of optically faint, hard X-ray sources of the kind likely to be responsible for much of the hard X-ray background. We confirm that such sources are easily detected in the near-infrared, and find that they have a featureless continuum suggesting that the active nucleus is heavily obscured. The infrared colours of the majority of the targets observed are consistent with absorbed elliptical host galaxies at z=1-2. It is likely that we are observing some of the brighter members of the important new class of X-ray type II quasars.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): galaxies: active - diffuse radiation - infrared: galaxies - X-rays: galaxies

Nomenclature: Table 1: [CFG2001b] AN (Nos P1-P2, I1-I4, A1-A2, B1-B4, C1-C2).

CDS comments: table 1: CXOU J091360.0+405548 = CXOU J091359.9+405548 in SIMBAD

Simbad objects: 21

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Number of rows : 21
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 CXOU J031946.2+413737 X 03 19 46.2 +41 37 38           ~ 1 0
2 CXOU J031946.4+413734 X 03 19 46.4 +41 37 34           ~ 2 0
3 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
4 CXOU J091340.9+410314 X 09 13 41.0 +41 03 15   22.5       ~ 2 0
5 IRAS 09104+4109 Sy2 09 13 45.4951283928 +40 56 28.215343572   19.69 19.21     ~ 260 1
6 CXOU J091352.8+405829 X 09 13 52.9 +40 58 31           ~ 1 0
7 2XMM J091357.4+405937 QSO 09 13 57.4236339792 +40 59 37.570872192   21.5       ~ 4 0
8 CXOU J091359.9+405548 X 09 13 59.9 +40 55 50           ~ 1 0
9 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1
10 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
11 CXOU J134849.0+263716 QSO 13 48 49.5 +26 37 11   22.5       ~ 3 0
12 CXOU J134905.8+263752 QSO 13 49 06.4 +26 37 48   22.5       ~ 4 0
13 CXOU J140048.4+024954 X 14 00 48.9 +02 49 50           ~ 1 0
14 CXOU J140100.2+025720 X 14 01 00.8 +05 57 15           ~ 1 0
15 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
16 CXOU J140106.9+024934 X 14 01 07.5 +02 49 30   22.5       ~ 3 0
17 CXOU J140108.8+025651 X 14 01 09.3 +02 56 47           ~ 1 0
18 CXOU J162827.8+392343 X 16 28 27.9 +39 23 34           ~ 2 0
19 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
20 CXOU J162850.9+392434 X 16 28 51.4 +39 24 25           ~ 1 0
21 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2

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