Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-26T08:39:19.892Z Has data issue: false hasContentIssue false
  • English
  • Français

Low-Luminosity Seyfert Nuclei

Published online by Cambridge University Press:  12 April 2016

Luis C. Ho ,
Alexei V. Filippenko  and
Wallace L.W. Sargent
Luis C. Ho
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA
Alexei V. Filippenko
Affiliation:
Astronomy Department, University of California, Berkeley, CA 94720-3411, USA
Wallace L.W. Sargent
Affiliation:
Palomar Observatory, 105-24 Caltech, Pasadena, CA 91125, USA

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 describe a new sample of Seyfert nuclei discovered during the course of an optical spectroscopic survey of nearby galaxies. The majority of the objects, many recognized as AGNs for the first time, have luminosities much lower than those of classical Seyferts and populate the faint end of the AGN luminosity function. A significant fraction of the nuclei emit broad Hα emission qualitatively similar to the broad lines seen in classical Seyfert 1 nuclei and QSOs.

Type
IX. Surveys and Properties of Active Galaxies and Related Sources
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 429 - 433
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

Filippenko, A.V. 1993, in The Nearest Active Galaxies, ed. Beekman, J., Colina, L., & Netzer, H. (Madrid: CSIC Press), 99.Google Scholar
Filippenko, A.V., & Sargent, W.L.W. 1985, ApJS, 57, 503.Google Scholar
Filippenko, A.V., & Sargent, W.L.W. 1986, in Structure and Evolution of Active Galactic Nuclei, ed. Giuricin, G. et al. (Dordrecht: Reidel), 21.Google Scholar
Heckman, T.M. 1980, A&A, 87, 152.Google Scholar
Ho, L.C. 1995, Ph.D. thesis, Univ. of California at Berkeley.Google Scholar
Ho, L.C. 1996, in The Physics of LINERs in View of Recent Observations, ed. Eracleous, M. et al. (San Francisco: ASP), in press.Google Scholar
Ho, L.C., et al. 1996, ApJS, submitted.Google Scholar
Ho, L.C., Filippenko, A.V., & Sargent, W.L.W. 1993, ApJ, 417, 63.Google Scholar
Ho, L.C., Filippenko, A.V., & Sargent, W.L.W. 1995, ApJS, 98, 477.Google Scholar
Ho, L.C., Filippenko, A.V., & Sargent, W.L.W. 1996, ApJS, submitted.Google Scholar
Huchra, J.P., & Burg, R. 1992, ApJ, 393, 90.Google Scholar
Huchra, J.P., & Sargent, W.L.W. 1973, ApJ, 186, 433.Google Scholar
Keel, W.C. 1980, AJ, 85, 198.Google Scholar
Keel, W.C. 1983, ApJ, 269, 466.CrossRefGoogle Scholar
Koski, A.T. 1978, ApJ, 223, 56.Google Scholar
Maiolino, R., & Rieke, G.H. 1995, ApJ, 454, 95.Google Scholar
McLeod, K.K., & Rieke, G.H. 1995, ApJ, 441, 96.CrossRefGoogle Scholar
Osterbrock, D.E. 1981, ApJ, 249, 462.Google Scholar
Phillips, M.M., Charles, P.A., & Baldwin, J.A. 1983, ApJ, 266, 485.CrossRefGoogle Scholar
Shuder, J.M., & Osterbrock, D.E. 1981, ApJ, 250, 55.Google Scholar
Stauffer, J.R. 1982, ApJ, 262, 66.Google Scholar
Veilleux, S., & Osterbrock, D.E. 1987, ApJS, 63, 295.Google Scholar
Whittle, M. 1992a, ApJ, 387, 121.Google Scholar
Whittle, M. 1992b, ApJS, 79, 49.Google Scholar