Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9532e&link_type=abstract
American Astronomical Society, AAS Meeting #211, #95.32; Bulletin of the American Astronomical Society, Vol. 39, p.899
Astronomy and Astrophysics
Astronomy
Scientific paper
COSMOS is a pan-chromatic survey of the extragalactic sky designed to be both large and deep enough to study galaxy and quasar evolution in typical environments with minimal 'cosmic bias'. The location of COSMOS near the equator (10h +02deg) allows all major and future facilities (esp. EVLA, ALMA) to target this 2 sq. deg. region. Both space - HST, Spitzer, GALEX, XMM - and ground-based - VLA, Subaru, CTIO, KPNO, CFHT, Magellan, VLT - have already surveyed the area to faint limits. The central region of the COSMOS field is now the target of deeper surveys by the VLA and VLT, and proposed for GALEX and VISTA.
The Chandra COSMOS Survey (C-COSMOS) covers the central area of the COSMOS field to ˜ 2e-16 cgs (0.5-2keV) with a series of 36 heavily overlapped ACIS-I 50 ksec pointings, giving a total exposure of 200 ksec over ˜ 0.8 sq. deg. This overlap gives uniform exposure over the whole area, and a sharply defined limiting flux.
A first catalog of over 2000 sources has been produced, with some 1000 sources at (2-4)e-16 cgs (0.5-2keV), compared with about 200 in the combined CDF-N and -S. This flux range will include many starburst dominated galaxies as well as AGNs. A multi-wavelength ID program using the large COSMOS data set has yielded counterparts to over 80% of the C-COSMOS X-ray sources, whose properties we have begun to study.
This work was made possible in part by NASA grant GO7-8136A.
Chandra-COSMOS Team
Elvis Martin
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