The Chandra COSMOS Survey

Details The Chandra COSMOS Survey The Chandra COSMOS Survey

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21347101e&link_type=abstract

American Astronomical Society, AAS Meeting #213, #471.01; Bulletin of the American Astronomical Society, Vol. 41, p.422

Other

Scientific paper

The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8Ms, program that has imaged the central 0.5 sq.deg of the COSMOS field for 160 ksec, and an outer 0.4 sq.deg. area at 50 ksec, to limiting source detection depths of 2e-16 cgs in the soft (0.5-2 keV) band, 8e-16 cgs in the hard (2-7 keV) band, and 6e-16 cgs in the full (0.5-7 keV) band. Here we describe the strategy, design and execution of the C-COSMOS survey, and present the catalog of 1761 point sources detected in C-COSMOS, almost 500 of which have >80; counts, sufficient for a spectral analysis.
By using a grid of 36 heavily overlapping (8.1 arcmin out of a 16 arcmin field of view) pointing positions a remarkably uniform exposure across the field was obtained, leading to a well-defined lower flux limit.
The novel source detection method required by this overlapping tiling strategy was able to obtain reliable source detections without degradation down to a 5-10 count level, as verified by the resulting logN-logS curve. The details of the method are reported in a companion poster. The number of sources detected in the different sub-bands with a maximum likelihood Det_ML > 10.8 are 1652, 1339 and 1017 in the full (0.5-7 keV), soft (0.5-2 keV) and hard (2-7 keV) bands, respectively. The full catalog will be available on-line.
Although the tiling strategy put several widely different PSFs at each point on the sky, the source positions were recovered with sub-arcsecond accuracy, enabling optical and infrared identifications of virtually all the sources. These identifications are reported in another companion poster by Civano et al.
This work was supported in part by NASA grant GO7-8036A (CXC).

Affiliated with

Also associated with

No associations

Rating

The Chandra COSMOS Survey does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Chandra COSMOS Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Chandra COSMOS Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1706791