Hostname: page-component-848d4c4894-p2v8j Total loading time: 0.001 Render date: 2024-06-01T10:43:16.729Z Has data issue: false hasContentIssue false
  • English
  • Français

Testing the Unified Model with an Infrared Selected Sample of Seyferts

Published online by Cambridge University Press:  12 April 2016

H. R. Schmitt ,
J. S. Ulvestad ,
R. R. J. Antonucci ,
C. J. Clarke ,
J. E. Pringle  and
A. L. Kinney
H. R. Schmitt
Affiliation:
National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM87801
J. S. Ulvestad
Affiliation:
National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM87801
R. R. J. Antonucci
Affiliation:
University of California, Santa Barbara, Santa Barbara, CA93106
C. J. Clarke
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge CB3 OHA, England
J. E. Pringle
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge CB3 OHA, England
A. L. Kinney
Affiliation:
NASA Headquarters, 300 E St., Washington, DC20546

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present a series of statistical tests using homogeneous data and measurements for a sample of Seyfert galaxies. These galaxies were selected from mostly isotropic properties, their far infrared fluxes and warm infrared colors, which provide a considerable advantage over the criteria used by most investigators in the past, like ultraviolet excess. Our results provide strong support for a Unified Model in which Seyferts 2’s contain a torus seen more edge-on than in Seyferts l’s and show that previous results showing the opposite were most likely due to selection effects.

Type
Part 2. Infrared and Submillimeter Surveys for AGN
Information
International Astronomical Union Colloquium , Volume 184: AGN Surveys , 2002 , pp. 173 - 178
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Antonucci, R.R.J. 1993, ARA&A, 31, 473 Google Scholar
Antonucci, R.R.J. & Miller, J.S. 1985, ApJ, 297, 621 CrossRefGoogle Scholar
Bushouse, H.A. 1986, AJ, 91, 255 CrossRefGoogle Scholar
Dahari, O. 1984, AJ, 89, 966 Google Scholar
de Grijp, M.H.K. et al. 1992, A&AS, 96, 389 Google Scholar
Dultzin-Hacyan, D. et al. 1999, ApJ, 513, L111 CrossRefGoogle Scholar
Fuentes-Williams, T. & Stocke, J.T. 1988, AJ, 96, 1235 CrossRefGoogle Scholar
Gunn, J. 1979, in Active Galactic Nuclei, edited by Hazard, C. & Mitton, S., (Cambridge University Press, Cambridge), 213 Google Scholar
Hernquist, L. 1989, Nature, 640, 687 CrossRefGoogle Scholar
Keel, W.C. 1980, AJ, 85, 198 CrossRefGoogle Scholar
Kinney, A.L. et al. 2000, ApJ, 537, 152 CrossRefGoogle Scholar
Laurikainen, E. & Salo, H. 1995, A&A, 293, 683 Google Scholar
Lawrence, A. & Elvis, M. 1982, ApJ, 256, 410 CrossRefGoogle Scholar
Maiolino, R. & Rieke, G.H. 1995, ApJ, 454, 95 CrossRefGoogle Scholar
Malkan, M.A., Gorjian, V. & Tam, R. 1998, ApJS, 117, 25 CrossRefGoogle Scholar
Pier, E.A. & Krolik, J. H. 1992, ApJ, 401, 99 CrossRefGoogle Scholar
Pogge, R.W. 1989, ApJ, 345, 730 CrossRefGoogle Scholar
Rafanelli, P., Violato, M. & Baruffolo, A. 1995, AJ, 109 1546 CrossRefGoogle Scholar
Schmitt, H.R. 2001, AJ, in pressGoogle Scholar
Schmitt, H.R. & Kinney, A.L. 1996, ApJ, 463, 498 CrossRefGoogle Scholar
Schmitt, H.R. et al. 2001a, ApJS, 132, 199 Google Scholar
Schmitt, H.R. et al. 2001b, ApJ, 555, 663 CrossRefGoogle Scholar
Schwartz, M. 1981, ApJ, 247, 77 CrossRefGoogle Scholar
Ulvestad, J.S., & Wilson, A.S. 1989, ApJ, 343, 659 CrossRefGoogle Scholar