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X-ray bright optically quiet galaxies: the case of P3

A. Comastri·M. Brusa·P. Ciliegi·M. Mignoli·C. Vignali·P. Severgnini·R. Maiolino·F. Fiore·F. La Franca·G. Matt·G. C. Perola·A. Baldi·S. Molendi
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Abstract

Recent X-ray surveys have clearly demonstrated that a population of optically dull, X-ray bright galaxies is emerging at X-ray fluxes of the order of 10-14 erg cm-2 s-1. The nature of these objects is still unknown. We present the results of multiwavelength observations of what can be considered the best studied example: the Chandra source CXOUJ031238.9-765134 optically identified by Fiore et al. (2000) with an apparently normal galaxy at z=0.159 and called ``Fiore P3''.

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A. Comastri, M. Brusa, P. Ciliegi, M. Mignoli, C. Vignali, P. Severgnini, R. Maiolino, F. Fiore, F. La Franca, G. Matt, G. C. Perola, A. Baldi, S. Molendi. 2001-09-07. X-ray bright optically quiet galaxies: the case of P3. https://arxiv.org/abs/astro-ph/0109117

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