Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..32...34s&link_type=abstract
The Nuclear Region, Host Galaxy and Environment of Active Galaxies (Eds. Erika Benítez, Irene Cruz-González, & Yair Krongold) Re
Astronomy and Astrophysics
Astronomy
1
Galaxies: Active, Surveys
Scientific paper
AGN are identified in deep HST surveys via a number of selection techniques and wavelengths. This work compares the samples of AGN selected via optical variability, X-ray and mid-IR indicators in HST survey fields. Recent results from the HST GOODS-South field reveal that 57% of X-ray and mid-IR selected AGN are also optical variables. Several X-ray-only AGN are variables as well as a few mid-IR-only selected sources. We investigate the nature of the identified AGN and the role of obscuration among the various selection techniques.
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