Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-02-26
Mon.Not.Roy.Astron.Soc. 342 (2003) 802
Astronomy and Astrophysics
Astrophysics
22 pages, MNRAS in press. A full resolution version is available at http://www.astro.soton.ac.uk/~kfg/catalogue.ps.gz
Scientific paper
10.1046/j.1365-8711.2003.06572.x
We present the results of a Chandra ACIS-I survey of a high latitude region at 13h +38 which was earlier observed with ROSAT (McHardy et al. 1998) and which has recently been observed by XMM-Newton for 200ksec. XMM-Newton will provide good quality X-ray spectra for over 200 sources with fluxes around the knee of the logN/logS, which are responsible for the bulk of the X-ray background (XRB). The main aim of the Chandra observations is to provide arcsecond, or better, positions, and hence reliable identifications, for the XMM-Newton sources. The ACIS-I observations were arranged in a mosaic of four 30ksec pointings, covering almost all of the 15' radius XMM-Newton/ROSAT field. We detect 214 Chandra sources above 5 sigma significance, to a limiting flux of \~1.3e-15 erg/cm2/s (0.5-7 keV). Optical counterparts are derived from a Subaru SuprimeCam image reaching to R~27. The very large majority of the Chandra sources have an optical counterpart, with the distribution peaking at 23
Cordova France
Gunn Katherine F.
Jones Robert L.
Loaring Nic
Mason Keith O.
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