X-ray bright optically quiet galaxies: the case of P3
astro-ph
/ Authors
A. Comastri, M. Brusa, P. Ciliegi, M. Mignoli, C. Vignali, P. Severgnini, R. Maiolino, F. Fiore, F. La Franca, G. Matt
and 3 more authors
/ 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''.