SIMBAD references

2002ApJ...571..771C - Astrophys. J., 571, 771-778 (2002/June-1)

The HELLAS2XMM survey. II. Multiwavelength observations of P3: an x-ray-bright, optically inactive galaxy.

COMASTRI A., MIGNOLI M., CILIEGI P., SEVERGNINI P., MAIOLINO R., BRUSA M., FIORE F., BALDI A., MOLENDI S., MORGANTI R., VIGNALI C., LA FRANCA F., MATT G. and PEROLA G.C.

Abstract (from CDS):

Recent X-ray surveys have clearly demonstrated that a population of optically dull, X-ray-bright galaxies is emerging at 2-10 keV fluxes of the order of 10–14 ergs.cm–2.s–1. Although they might constitute an important fraction of the sources responsible for the hard X-ray background, their nature is still unknown. With the aim of better understanding the physical mechanisms responsible for the observed properties, we have started an extensive program of multiwavelength follow-up observations of hard X-ray, optically quiet galaxies discovered with XMM-Newton. Here we report the results of what can be considered the first example of this class of objects: CXOU J031238.9-765134, originally discovered by Chandra, and optically identified by Fiore et al. ((ref???)2000) with an apparently normal early-type galaxy at z=0.159, usually known as FIORE P3. Analysis of the broadband energy distribution suggests the presence of a heavily obscured active nucleus.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Individual: Alphanumeric: P3 - Galaxies: Nuclei - X-Rays: Galaxies

Simbad objects: 13

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2021.02.26-08:26:25

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