Hidden Quasars in Ultraluminous Infrared Galaxies
Autor: | W. van Breugel, Hien D. Tran, Spencer A. Stanford, Michael S. Brotherton |
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Rok vydání: | 1999 |
Předmět: | |
Zdroj: | Symposium - International Astronomical Union. 194:181-183 |
ISSN: | 0074-1809 |
Popis: | 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). |
Databáze: | OpenAIRE |
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