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An XMM-Newton Survey of Ultra-Luminous Infrared Galaxies

V. Braito·A. Franceschini·R. Della Ceca·L. Bassani·M. Cappi·P. Malaguti·G. G. C. Palumbo·M. Persic·G. Risaliti·M. Salvati·P. Severgnini
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Abstract

We present preliminary results of XMM-Newton observations of 5 Ultra-luminous Infrared Galaxies (ULIRGs), part of a mini-survey program dedicated to 10 ULIRGs selected from the bright IRAS sample. For 3 of them (IRAS 20551-4250, IRAS 19254-7245 and Mkn 231) we find strong evidence for the presence of a hidden AGN, while for two others (IRAS 20110-4156 IRAS 22491-1808) the S/N ratio of the data does not allow us to be conclusive. In particular, we have detected a strong Fe-K line in the X-ray spectra of IRAS19254-7245, with an equivalent width (~2 keV) suggestive that most of the energy source in this object is due to a deeply buried AGN.

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V. Braito, A. Franceschini, R. Della Ceca, L. Bassani, M. Cappi, P. Malaguti, G. G. C. Palumbo, M. Persic, G. Risaliti, M. Salvati, P. Severgnini. 2002-02-19. An XMM-Newton Survey of Ultra-Luminous Infrared Galaxies. https://arxiv.org/abs/astro-ph/0202352

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