First Optical Spectra of Newly Detected Swift BAT AGN

Details First Optical Spectra of Newly Detected Swift BAT AGN First Optical Spectra of Newly Detected Swift BAT AGN

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924333h&link_type=abstract

American Astronomical Society, AAS Meeting #219, #243.33

Astronomy and Astrophysics

Astronomy

Scientific paper

The Swift BAT hard X-ray survey is providing an unbiased look at AGN because in the 14-195 keV hard X-ray regime, dust and gas obscuration does not prevent their detection. We present the optical and X-ray spectra of 21 newly discovered BAT AGN from the 58 and 70-month catalogs and report their redshifts, optical properties, and classifications for the first time. The optical follow-ups were done with the 3.5-meter telescope at Apache Point Observatory in New Mexico over 6 half-nights. The newly detected sources are either fainter, or more distant than the sources in the previous catalogs. The sample has a redshift range of z = 0.02 to 0.16, with the more obscured AGN at the lower redshifts. Ten of the sources exhibit broadlines (47%), indicative of Seyfert 1s, nine exhibit narrowlines (43%), indicative of Seyfert 2s, and two (10%) do not show any lines and have a flat spectrum.

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