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

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

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..245..463a&link_type=abstract

Formation and Evolution of Galaxy Bulges, Proceedings of the International Astronomical Union, IAU Symposium, Volume 245, p. 463

Physics

Optics

Instrumentation: Adaptive Optics, Galaxies: Active, Galaxies: Stellar Content

Scientific paper

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).

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