Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.7208k&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #72.08; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
This study investigates the use of optical variability to identify AGN in the GOODS South field. Photometry was performed on a sample of 24 infrared power law-selected AGN candidates and 104 X-ray sources with optical counterparts. Each object is classified with a variability significance value, which is related to the standard deviation of its magnitude in five epochs separated by 45-day intervals. The variability significance is compared to IR and X-ray properties of the sources. We find that the majority of significant variables are consistent with IR spectral energy distributions typical of BLAGNs and are usually softer X-ray sources. However, 30% of the IR-selected AGN candidates without X-ray emission, generally thought to be highly obscured sources, display marginal optical variability, confirming their AGN nature.
Klesman Alison J.
Sarajedini Vicki Lynn
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