X-ray Detected AGN on the Color-Magnitude Diagram

Details X-ray Detected AGN on the Color-Magnitude Diagram X-ray Detected AGN on the Color-Magnitude Diagram

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21532303c&link_type=abstract

American Astronomical Society, AAS Meeting #215, #323.03; Bulletin of the American Astronomical Society, Vol. 42, p.419

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate the host galaxy colors of X-ray detected AGN in MUSYC/Extended Chandra Deep Field South. In order to compute accurate photometric redshifts, rest frame colors and luminosities for this population, Subaru's Suprime-Cam was used to collect deep observations (AB mag 26) in 18 medium bands between 427nm and 856nm. These data are combined with the existing UBVRIzJHK and Spitzer IRAC images to create a uniform catalog. We obtain photometric redshifts with the accuracy of 1% (Δz / (1+ z) 0.01) using EAZY, a fast public photometric redshift code out to z˜5 for both the X-ray selected AGN and the overall galaxy sample. We find a bimodal color distribution of galaxies extending out to z˜1.2 and we describe the colors of AGN host galaxies as a function of host galaxy mass to determine their roll in the evolution of galaxies.

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