Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-08T10:29:25.100Z Has data issue: false hasContentIssue false
  • English
  • Français

Hidden Quasars in Ultraluminous Infrared Galaxies

Published online by Cambridge University Press:  25 May 2016

H. D. Tran ,
M. S. Brotherton ,
S. A. Stanford  and
W. van Breugel
H. D. Tran
Affiliation:
Institute of Geophysics & Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550
M. S. Brotherton
Affiliation:
Institute of Geophysics & Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550
S. A. Stanford
Affiliation:
Institute of Geophysics & Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550
W. van Breugel
Affiliation:
Institute of Geophysics & Planetary Physics, Lawrence Livermore National Laboratory, Livermore, CA 94550

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.

Many ultraluminous infrared galaxies (ULIRGs) are powered by quasars hidden in the center, but many are also powered by starbursts. A simply diagnostic diagram is proposed that can identify obscured quasars in ULIRGs by their high-ionization emission lines ([O III]λ5007/Hβ ≳ 5), and “warm” IR color (f25/f60 ≳ 0.25).

Type
II. Observational Properties of AGN and Related Objects
Information
Symposium - International Astronomical Union , Volume 194: Activity in Galaxies and Related Phenomena , 1999 , pp. 181 - 183
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Becker, R. H., White, R. L., & Helfand, D. J. 1995, ApJ, 450, 559 Google Scholar
Condon, J. J. et al. 1991, ApJ, 378, 65 CrossRefGoogle Scholar
Dey, A., & van Breugel, W. 1994, in Mass-Transfer Induced Activity in Galaxies, ed. Shlosman, I., p. 263 Google Scholar
Douglas, J. N. et al. 1996, AJ, 111, 1945 Google Scholar
Kim, D.-C., Veilleux, S., & Sanders, D. B. 1998, ApJ, in press, astro-ph/9806149 Google Scholar
Sanders, D. B. et al. 1988, ApJ, 325, 74 Google Scholar
Soifer, et al. 1987, ApJ, 320, 238 Google Scholar
Stanford, S. A., Stern, D., van Breugel, W., De Breuck, C. 1998, ApJ, in prep. Google Scholar