The nature of luminous X-ray sources with mid-infrared counterparts

A. Alonso-Herrero; P. G. Pérez-González; J. Rigby; G. H. Rieke; E. Le Floc'h; P. Barmby; M. J. Page; C. Papovich; H. Dole; E. Egami; J. S. Huang; D. Rigopoulou; D. Cristóbal-Hornillos; C. Eliche-Moral; M. Balcells; M. Prieto; P. Erwin; C. W. Engelbracht; K. D. Gordon; M. Werner; S. P. Willner; G. G. Fazio; D. Frayer; D. Hines; D. Kelly; W. Latter; K. Misselt; S. Miyazaki; J. Morrison; M. J. Rieke; G. Wilson

doi:10.1086/422976

The nature of luminous X-ray sources with mid-infrared counterparts

A. Alonso-Herrero, P. G. Pérez-González, J. Rigby, G. H. Rieke, E. Le Floc'h, P. Barmby, M. J. Page, C. Papovich, H. Dole, E. Egami, J. S. Huang, D. Rigopoulou, D. Cristóbal-Hornillos, C. Eliche-Moral, M. Balcells, M. Prieto, P. Erwin, C. W. Engelbracht, K. D. Gordon, M. WernerS. P. Willner, G. G. Fazio, D. Frayer, D. Hines, D. Kelly, W. Latter, K. Misselt, S. Miyazaki, J. Morrison, M. J. Rieke, G. Wilson

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31 Scopus citations

Abstract

We investigate the luminous X-ray sources in the Lockman Hole (LH) and the extended Groth strip (EGS) detected at 24 μm 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 μm sources in the EGS and LH. Only about one-quarter of the hard X-ray/24 μm sources show pure type 1 active galactic nucleus (AGN) SEDs. More than half of the X-ray/24 μm 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 μm 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.

Original language	English (US)
Pages (from-to)	155-159
Number of pages	5
Journal	Astrophysical Journal, Supplement Series
Volume	154
Issue number	1
DOIs	https://doi.org/10.1086/422976
State	Published - Sep 2004

Keywords

Galaxies: active
Galaxies: fundamental parameters
Infrared: galaxies
X-rays: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/422976

Cite this

Alonso-Herrero, A., Pérez-González, 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., Cristóbal-Hornillos, D., Eliche-Moral, C., Balcells, M., Prieto, M., Erwin, P., Engelbracht, C. W., Gordon, K. D., ... Wilson, G. (2004). The nature of luminous X-ray sources with mid-infrared counterparts. Astrophysical Journal, Supplement Series, 154(1), 155-159. https://doi.org/10.1086/422976

Alonso-Herrero, A, Pérez-González, PG, Rigby, J, Rieke, GH, Le Floc'h, E, Barmby, P, Page, MJ, Papovich, C, Dole, H, Egami, E, Huang, JS, Rigopoulou, D, Cristóbal-Hornillos, D, Eliche-Moral, C, Balcells, M, Prieto, M, Erwin, P, Engelbracht, CW, Gordon, KD, Werner, M, Willner, SP, Fazio, GG, Frayer, D, Hines, D, Kelly, D, Latter, W, Misselt, K, Miyazaki, S, Morrison, J, Rieke, MJ & Wilson, G 2004, 'The nature of luminous X-ray sources with mid-infrared counterparts', Astrophysical Journal, Supplement Series, vol. 154, no. 1, pp. 155-159. https://doi.org/10.1086/422976

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title = "The nature of luminous X-ray sources with mid-infrared counterparts",

abstract = "We investigate the luminous X-ray sources in the Lockman Hole (LH) and the extended Groth strip (EGS) detected at 24 μm 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 μm sources in the EGS and LH. Only about one-quarter of the hard X-ray/24 μm sources show pure type 1 active galactic nucleus (AGN) SEDs. More than half of the X-ray/24 μm 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 μm 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.",

keywords = "Galaxies: active, Galaxies: fundamental parameters, Infrared: galaxies, X-rays: galaxies",

author = "A. Alonso-Herrero and P{\'e}rez-Gonz{\'a}lez, {P. G.} and J. Rigby and Rieke, {G. H.} and {Le Floc'h}, E. and P. Barmby and Page, {M. J.} and C. Papovich and H. Dole and E. Egami and Huang, {J. S.} and D. Rigopoulou and D. Crist{\'o}bal-Hornillos and C. Eliche-Moral and M. Balcells and M. Prieto and P. Erwin and Engelbracht, {C. W.} and Gordon, {K. D.} and M. Werner and Willner, {S. P.} and Fazio, {G. G.} and D. Frayer and D. Hines and D. Kelly and W. Latter and K. Misselt and S. Miyazaki and J. Morrison and Rieke, {M. J.} and G. Wilson",

year = "2004",

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doi = "10.1086/422976",

language = "English (US)",

volume = "154",

pages = "155--159",

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T1 - The nature of luminous X-ray sources with mid-infrared counterparts

AU - Alonso-Herrero, A.

AU - Pérez-González, P. G.

AU - Rigby, J.

AU - Rieke, G. H.

AU - Le Floc'h, E.

AU - Barmby, P.

AU - Page, M. J.

AU - Papovich, C.

AU - Dole, H.

AU - Egami, E.

AU - Huang, J. S.

AU - Rigopoulou, D.

AU - Cristóbal-Hornillos, D.

AU - Eliche-Moral, C.

AU - Balcells, M.

AU - Prieto, M.

AU - Erwin, P.

AU - Engelbracht, C. W.

AU - Gordon, K. D.

AU - Werner, M.

AU - Willner, S. P.

AU - Fazio, G. G.

AU - Frayer, D.

AU - Hines, D.

AU - Kelly, D.

AU - Latter, W.

AU - Misselt, K.

AU - Miyazaki, S.

AU - Morrison, J.

AU - Rieke, M. J.

AU - Wilson, G.

PY - 2004/9

Y1 - 2004/9

N2 - We investigate the luminous X-ray sources in the Lockman Hole (LH) and the extended Groth strip (EGS) detected at 24 μm 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 μm sources in the EGS and LH. Only about one-quarter of the hard X-ray/24 μm sources show pure type 1 active galactic nucleus (AGN) SEDs. More than half of the X-ray/24 μm 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 μm 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.

AB - We investigate the luminous X-ray sources in the Lockman Hole (LH) and the extended Groth strip (EGS) detected at 24 μm 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 μm sources in the EGS and LH. Only about one-quarter of the hard X-ray/24 μm sources show pure type 1 active galactic nucleus (AGN) SEDs. More than half of the X-ray/24 μm 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 μm 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.

KW - Galaxies: active

KW - Galaxies: fundamental parameters

KW - Infrared: galaxies

KW - X-rays: galaxies

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U2 - 10.1086/422976

DO - 10.1086/422976

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SN - 0067-0049

VL - 154

SP - 155

EP - 159

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

IS - 1

ER -

The nature of luminous X-ray sources with mid-infrared counterparts

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Keywords

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Luminous X-ray sources Chandra fluxes

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The nature of luminous X-ray sources with mid-infrared counterparts

Abstract

Keywords

ASJC Scopus subject areas

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Datasets

Luminous X-ray sources Chandra fluxes

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