SIMBAD references

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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