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ASCA observations of ultra luminous infrared galaxies — evolution from starburst to AGN ?
Author(s) -
Nakagawa T.,
Kii T.,
Fujimoto R.,
Miyazaki T.,
Inoue H.,
Ogasaka Y.,
Ikebe Y.,
Kawabe R.
Publication year - 1999
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/1521-3994(199908)320:4/5<246::aid-asna246>3.0.co;2-s
Subject(s) - physics , luminous infrared galaxy , astrophysics , luminosity , galaxy , infrared , astronomy , galaxy formation and evolution , galaxy merger
We made a series of ASCA observations of Ultra Luminous Infrared Galaxies (ULIRGs), to reveal the origin of their luminosities and to test a proposed evolutionary scenario of ULIRGs. We discovered embedded AGN in some galaxies, but the relative contribution of AGN activity to the total luminosity varies significantly from galaxy to galaxy and has no correlation with the evolutionary sequence as mergers.