First Results from HST Imaging of the Chandra Deep Field South

Details First Results from HST Imaging of the Chandra Deep Field South First Results from HST Imaging of the Chandra Deep Field South

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.7906g&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #79.06; Bulletin of the American Astronomical Society, Vol. 33, p.907

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Scientific paper

We present the first results from deep HST/WFPC2 imaging of three fields within the Chandra Deep Field South. We identify the optical counterparts for 90% of the 1 Msec X-ray sources (38 of 42), and these are separated into two distinct classes at optical wavebands: (1) a population of faint sources (I ~ 24--26) with colors similar to the field population in the same magnitude range, and (2) a brighter group (I < 23) with colors significantly redder than the bright field population. The optically resolved sources in the brighter population have a narrow range of V-I color and comprise a mix of both late- and early-type galaxies at moderate redshifts (z ~ 0.3--1). We show that the optically faint population, on the other hand, can be explained as being predominantly moderate-luminosity Type 2 AGN at higher redshifts (z ~ 2--3).

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