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Keck laser guide star observations of 11 GOODS-South Chandra sources at z ~ 1

Published online by Cambridge University Press:  01 July 2007

S. Mark Ammons ,
Jason Melbourne ,
David C. Koo  and
Claire E. Max
S. Mark Ammons
Affiliation:
Center for Adaptive Optics, University of California, Santa Cruz, 1156 High St., Santa Cruz, CA 95064, U.S.A. email: [email protected]
Jason Melbourne
Affiliation:
Center for Adaptive Optics, University of California, Santa Cruz, 1156 High St., Santa Cruz, CA 95064, U.S.A. email: [email protected]
David C. Koo
Affiliation:
Center for Adaptive Optics, University of California, Santa Cruz, 1156 High St., Santa Cruz, CA 95064, U.S.A. email: [email protected]
Claire E. Max
Affiliation:
Center for Adaptive Optics, University of California, Santa Cruz, 1156 High St., Santa Cruz, CA 95064, U.S.A. email: [email protected]
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Abstract

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The Center for Adaptive Optics (CfAO) Treasury Survey (CATS) has observed 11 Chandra sources (10 AGN) at z ~ 1 in the GOODS-South field with the laser guide star adaptive optics (LGSAO) system at Keck Observatory. We combine this K band imaging with ACS imaging in the B, V, I, and z bands to obtain multi-color imaging at a spatial resolution better than 100 mas in all bands. We attempt to remove central optical point sources from AGN using the GALFIT (Peng et al. 2002) routine. We fit Bruzual & Charlot (2003) tau-models to the residuals and find young, dusty stellar populations in the central 1-2 kpc (the mean central optical depth at rest-frame 500 nm is 4-5).

Keywords

instrumentation: adaptive opticsgalaxies: activegalaxies: stellar content
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 463 - 464
Copyright
Copyright © International Astronomical Union 2008

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