Bibcode
Alonso-Herrero, A.; Perez-Gonzalez, P. G.; Rigby, J.; Rieke, G. H.; Le Floc'h, E.; Barmby, P.; Page, M. J.; Papovich, C.; Dole, H.; Egami, E.; Huang, J.-S.; Rigopoulou, D.; Cristobal-Hornillos, D.; Eliche-Moral, C.; Balcells, M.; Prieto, M.; Erwin, P.; Engelbracht, C. W.; Gordon, K. D.; Werner, M.; Willner, S. P.; Fazio, G. G.; Frayer, D.; Hines, D.; Kelly, D.; Latter, W.; Misselt, K.; Miyazaki, S.; Morrison, J.; Rieke, M. J.; Wilson, G.
Bibliographical reference
VizieR On-line Data Catalog: J/ApJS/154/155. Originally published in: 2004ApJS..154..155A
Advertised on:
7
2005
Citations
0
Refereed citations
0
Description
We investigate the luminous X-ray sources in the Lockman Hole (LH) and
the extended Groth strip (EGS) detected at 24{mu}m using the Multiband
Imaging Photometer (MIPS) and also with the Infrared Array Camera (IRAC)
on board the Spitzer Space Telescope. We assemble optical/infrared
spectral energy distributions (SEDs) for 45 X-ray/24{mu}m sources in the
EGS and LH. Only about one-quarter of the hard X-ray/24{mu}m sources
show pure type 1 active galactic nucleus (AGN) SEDs. More than half of
the X-ray/24{mu}m sources have stellar emission-dominated or obscured
SEDs, similar to those of local type 2 AGN and spiral/starburst
galaxies. One-third of the sources detected in hard X-rays do not have a
24{mu}m counterpart. Two such sources in the LH have SEDs resembling
those of S0/elliptical galaxies. The broad variety of SEDs in the
optical-to-Spitzer bands of X-ray-selected AGNs means that AGNs selected
according to the behavior in the optical/infrared will have to be
supplemented by other kinds of data (e.g., X-ray) to produce unbiased
samples of AGNs.
(1 data file).