Host Galaxy Properties of BAT Hard X-ray Selected AGN

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3475295· OSTI ID:21410516

Koss, Michael; Mushotzky, Richard; Veilleux, Sylvain ^[1]; Winter, Lisa ^[2]

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1. University of Maryland, College Park, MD (United States)
2. University of Colorado, Boulder, CO (United States)

Surveys of AGN taken in the optical, UV, and soft X-rays miss an important population of obscured AGN only visible in the hard X-rays and mid-IR wavelengths. The SWIFT BAT survey in the hard X-ray range (14-195 keV) has provided a uniquely unbiased sample of 246 AGN unaffected by galactic or circumnuclear absorption [1]. Most of the sources in the survey are bright, Seyfert like AGN's with median redshift of 0.03. Of the AGN, 43% are obscured, type II AGN. We obtained 17 nights of imaging of 90 host galaxies of these AGN in 2008 at the Kitt Peak 2.1 m telescope in the SDSS ugriz filters. For the broad line sources we subtracted the AGN contribution using GALFIT. By comparing our sample of AGN to inactive galaxies in the SDSS, we find that AGN are found in the most massive galaxies and are bluer in color than inactive galaxies of comparable stellar mass. We also find a correlation between the point source optical light and hard X-ray luminosity.

• OSTI ID: 21410516
• Journal Information: AIP Conference Proceedings, Vol. 1248, Issue 1; Conference: International conference on X-ray astronomy 2009: Present status, multi-wavelength approach and future perspectives, Bologna (Italy), 7-11 Sep 2009; Other Information: DOI: 10.1063/1.3475295; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
CORRELATIONS
GALAXY NUCLEI
HARD X RADIATION
KEV RANGE
LUMINOSITY
MASS
POINT SOURCES
RED SHIFT
SEYFERT GALAXIES
SOFT X RADIATION
TELESCOPES
WAVELENGTHS
ELECTROMAGNETIC RADIATION
ENERGY RANGE
GALAXIES
IONIZING RADIATIONS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATION SOURCES
RADIATIONS
SORPTION
X RADIATION