NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-22 T06:29:30 PDT
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For refcode 2010ApJ...710..503W:
Retrieve 78 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
2010ApJ...710..503W Optical Spectral Properties of Swift Burst Alert Telescope Hard X-Ray-Selected Active Galactic Nuclei Sources Winter, Lisa M.; Lewis, Karen T.; Koss, Michael; Veilleux, Sylvain; Keeney, Brian; Mushotzky, Richard F. Abstract. The Swift Burst Alert Telescope survey of active galactic nuclei (AGNs) is providing an unprecedented view of local AGNs (<z> ~ 0.03) and their host galaxy properties. In this paper, we present an analysis of the optical spectra of a sample of 64 AGNs from the nine month survey, detected solely based on their 14-195 keV flux. Our analysis includes both archived spectra from the Sloan Digital Sky Survey and our own observations from the 2.1 m Kitt Peak National Observatory telescope. Among our results, we include line ratio classifications utilizing standard emission line diagnostic plots, [O III] 5007 Angstrom luminosities, and H{beta}-derived black hole masses. As in our X-ray study, we find the type 2 sources to be less luminous (in [O III] 5007 Angstrom and 14-195 keV luminosities) with lower accretion rates than the type 1 sources. We find that the optically classified low-ionization narrow emission line regions, H II/composite galaxies, and ambiguous sources have the lowest luminosities, while both broad-line and narrow-line Seyferts have similar luminosities. From a comparison of the hard X-ray (14-195 keV) and [O III] luminosities, we find that both the observed and extinction-corrected [O III] luminosities are weakly correlated with X-ray luminosity. In a study of the host galaxy properties from both continuum fits and measurements of the stellar absorption indices, we find that the hosts of the narrow-line sources have properties consistent with late-type galaxies. Key words: galaxies: active, X-rays: galaxies
Retrieve 78 NED objects in this reference.
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