NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-25 T17:56:15 PDT
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For refcode 2009ApJ...698..623D:
Retrieve 89 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
2009ApJ...698..623D Isotropic Luminosity Indicators in a Complete AGN Sample Diamond-Stanic, Aleksandar M.; Rieke, George H.; Rigby, Jane R. Abstract. The [O IV] {lambda}25.89 micron line has been shown to be an accurate indicator of active galactic nucleus (AGN) intrinsic luminosity in that it correlates well with hard (10-200 keV) X-ray emission. We present measurements of [O IV] for 89 Seyfert galaxies from the unbiased revised Shapley-Ames (RSA) sample. The [O IV] luminosity distributions of obscured and unobscured Seyferts are indistinguishable, indicating that their intrinsic AGN luminosities are quite similar and that the RSA sample is well suited for tests of the unified model. In addition, we analyze several commonly used proxies for AGN luminosity, including [O III] {lambda}5007 Angstrom, 6 cm radio, and 2-10 keV X-ray emission. We find that the radio luminosity distributions of obscured and unobscured AGNs show no significant difference, indicating that radio luminosity is a useful isotropic luminosity indicator. However, the observed [O III] and 2-10 keV luminosities are systematically smaller for obscured Seyferts, indicating that they are not emitted isotropically. Key words: galaxies: active, galaxies: nuclei, galaxies: Seyfert
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