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Date and Time of the Query: 2019-07-21 T12:06:15 PDT
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For refcode 1994ApJ...436..586M:
Retrieve 117 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
1994ApJ...436..586M MULTIWAVELENGTH TESTS OF THE DUSTY TORUS MODEL FOR SEYFERT GALAXIES JOHN S. MULCHAEY, ANURADHA KORATKAR, MARTIN J. WARD, ANDREW S. WILSON, MARK WHITTLE, ROBERT R. J. ANTONUCCI, ANNE L. KINNEY, AND TODD HURT Received 1994 January 31; accepted 1994 May 31 ABSTRACT We present a compilation of emission properties for a sample of 116 Seyfert galaxies based on both previously unpublished data and measurements available in the literature. These measurements include fluxes in the emission lines [O III] {lambda}5007 and H{beta}, as well as the infrared (25-60 microns), ultraviolet (1450 A), soft (0.2-4 keV), and hard (2-10 keV) X-ray continua. These data are used to try to distinguish between isotropic and anisotropic emission properties of Seyfert galaxies. The distribution functions of [O III] {lambda}5007, infrared, and hard X-ray continuum are similar for Seyfert 1's and Seyfert 2's, consistent with these properties being isotropic. The ultraviolet and soft X-ray continua of Seyfert 2's are underluminous relative to the type 1's suggesting photons at these energies escape from the central source anisotropically. There is a correlation between the ultraviolet continuum and emission-line fluxes in Seyfert 1's consistent with the idea that the central engine is responsible for powering the line emission. No such correlation is found for the Seyfert 2's. Instead, the scatter in the plot of ultraviolet continuum versus line emission suggests the true nuclear continuum luminosity is not seen at Earth in these objects. These properties are consistent with those expected in the dusty torus model. Subject headings: galaxies: active - galaxies: nuclei - galaxies: Seyfert - infrared: galaxies - ultraviolet: galaxies - X-rays: galaxies
Retrieve 117 NED objects in this reference.
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