AAS 207th Meeting, 8-12 January 2006
Session 80 Evolution of Galaxies, Galaxies Surveys II
Poster, Tuesday, 9:20am-6:30pm, January 10, 2006, Exhibit Hall

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[80.22] Optical Properties of AGN in the ECDFS Field of the MUSYC Survey

P.S. Coppi, S. N. Virani, J. Van Duyne, C. M. Urry (Yale Univ.), E. Treister (Yale Univ. & U. de Chile), E. Gawiser (Yale Univ.), H. Francke (U. de Chile), MUSYC Collaboration

The MUltiwavelength Survey by Yale-Chile (MUSYC) includes as one of its four 1/4-degree fields the Extended Chandra Deep Field-South (ECDFS), for which a recent public X-ray survey covered ~1100 square arcminutes with 4 Chandra ACIS-I pointings centered on the original CDF-S field, to a depth of approximately 228 ks. This is the largest Chandra survey ever conducted at such depth. We detect 651 unique X-ray sources, of which 561 are detected in the full 0.5--8.0 keV band, 529 in the soft 0.5--2.0 keV band, and 335 in the hard 2.0--8.0 keV band. Seventy-three percent of the X-ray sources have optical counterparts in deep MUSYC imaging of this field while 26% have no apparent counterpart down to R=27.1 (AB). The remaining 1% have multiple optical counterparts within 1.5" of their X-ray position. We present the magnitude distributions and colors, as well as optical spectra of selected sources, and compare them to the X-ray properties. We discuss the nature of the underlying AGN populations, and implications for obscuration in AGN.

If you would like more information about this abstract, please follow the link to http://www.astro.yale.edu/musyc/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: coppi@astro.yale.edu

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