Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the spitzer space telescope

M. L.N. Ashby; S. Dye; J. S. Huang; S. Eales; S. P. Willner; T. M.A. Webb; P. Barmby; D. Rigopoulou; E. Egami; H. Mccracken; S. Lilly; S. Miyazaki; M. Brodwin; M. Blaylock; J. Cadien; G. G. Fazio

doi:10.1086/503861

Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the spitzer space telescope

M. L.N. Ashby, S. Dye, J. S. Huang, S. Eales, S. P. Willner, T. M.A. Webb, P. Barmby, D. Rigopoulou, E. Egami, H. Mccracken, S. Lilly, S. Miyazaki, M. Brodwin, M. Blaylock, J. Cadien, G. G. Fazio

Steward Observatory

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

We identify 17 possible 8.0 μm selected counterparts to the submillimeter galaxies in the CUDSS 14 hour field, derived from deep imaging carried out with the IRAC and MIPS instruments aboard the Spitzer Space Telescope. Ten of the 17 counterparts are not the same as those previously identified at shorter wavelengths. We argue that 8.0 μm selection offers a better means for identifying counterparts to submillimeter galaxies than near-infrared or optical selection. Based on the panchromatic spectral energy distributions (SEDs), most counterparts appear to be powered by ongoing star formation. Power-law fits to the SEDs suggest that five objects in the 8.0 μm selected counterpart sample harbor dominant active galactic nuclei (AGNs; a sixth object is identified as a possible AGN). The 3.6-8.0 μm colors of the infrared-selected counterparts are significantly redder than the general IRAC galaxy population in the CUDSS 14 hour field.

Original language	English (US)
Pages (from-to)	778-791
Number of pages	14
Journal	Astrophysical Journal
Volume	644
Issue number	2 II
DOIs	https://doi.org/10.1086/503861
State	Published - Jun 10 2006

Keywords

Cosmology: observations
Galaxies: evolution
Galaxies: formation
Galaxies: high-redshift
Infrared: Galaxies
Stars: formation

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/503861

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Ashby, M. L. N., Dye, S., Huang, J. S., Eales, S., Willner, S. P., Webb, T. M. A., Barmby, P., Rigopoulou, D., Egami, E., Mccracken, H., Lilly, S., Miyazaki, S., Brodwin, M., Blaylock, M., Cadien, J., & Fazio, G. G. (2006). Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the spitzer space telescope. Astrophysical Journal, 644(2 II), 778-791. https://doi.org/10.1086/503861

Ashby, MLN, Dye, S, Huang, JS, Eales, S, Willner, SP, Webb, TMA, Barmby, P, Rigopoulou, D, Egami, E, Mccracken, H, Lilly, S, Miyazaki, S, Brodwin, M, Blaylock, M, Cadien, J & Fazio, GG 2006, 'Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the spitzer space telescope', Astrophysical Journal, vol. 644, no. 2 II, pp. 778-791. https://doi.org/10.1086/503861

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title = "Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the spitzer space telescope",

abstract = "We identify 17 possible 8.0 μm selected counterparts to the submillimeter galaxies in the CUDSS 14 hour field, derived from deep imaging carried out with the IRAC and MIPS instruments aboard the Spitzer Space Telescope. Ten of the 17 counterparts are not the same as those previously identified at shorter wavelengths. We argue that 8.0 μm selection offers a better means for identifying counterparts to submillimeter galaxies than near-infrared or optical selection. Based on the panchromatic spectral energy distributions (SEDs), most counterparts appear to be powered by ongoing star formation. Power-law fits to the SEDs suggest that five objects in the 8.0 μm selected counterpart sample harbor dominant active galactic nuclei (AGNs; a sixth object is identified as a possible AGN). The 3.6-8.0 μm colors of the infrared-selected counterparts are significantly redder than the general IRAC galaxy population in the CUDSS 14 hour field.",

keywords = "Cosmology: observations, Galaxies: evolution, Galaxies: formation, Galaxies: high-redshift, Infrared: Galaxies, Stars: formation",

author = "Ashby, {M. L.N.} and S. Dye and Huang, {J. S.} and S. Eales and Willner, {S. P.} and Webb, {T. M.A.} and P. Barmby and D. Rigopoulou and E. Egami and H. Mccracken and S. Lilly and S. Miyazaki and M. Brodwin and M. Blaylock and J. Cadien and Fazio, {G. G.}",

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T1 - Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the spitzer space telescope

AU - Ashby, M. L.N.

AU - Dye, S.

AU - Huang, J. S.

AU - Eales, S.

AU - Willner, S. P.

AU - Webb, T. M.A.

AU - Barmby, P.

AU - Rigopoulou, D.

AU - Egami, E.

AU - Mccracken, H.

AU - Lilly, S.

AU - Miyazaki, S.

AU - Brodwin, M.

AU - Blaylock, M.

AU - Cadien, J.

AU - Fazio, G. G.

PY - 2006/6/10

Y1 - 2006/6/10

N2 - We identify 17 possible 8.0 μm selected counterparts to the submillimeter galaxies in the CUDSS 14 hour field, derived from deep imaging carried out with the IRAC and MIPS instruments aboard the Spitzer Space Telescope. Ten of the 17 counterparts are not the same as those previously identified at shorter wavelengths. We argue that 8.0 μm selection offers a better means for identifying counterparts to submillimeter galaxies than near-infrared or optical selection. Based on the panchromatic spectral energy distributions (SEDs), most counterparts appear to be powered by ongoing star formation. Power-law fits to the SEDs suggest that five objects in the 8.0 μm selected counterpart sample harbor dominant active galactic nuclei (AGNs; a sixth object is identified as a possible AGN). The 3.6-8.0 μm colors of the infrared-selected counterparts are significantly redder than the general IRAC galaxy population in the CUDSS 14 hour field.

AB - We identify 17 possible 8.0 μm selected counterparts to the submillimeter galaxies in the CUDSS 14 hour field, derived from deep imaging carried out with the IRAC and MIPS instruments aboard the Spitzer Space Telescope. Ten of the 17 counterparts are not the same as those previously identified at shorter wavelengths. We argue that 8.0 μm selection offers a better means for identifying counterparts to submillimeter galaxies than near-infrared or optical selection. Based on the panchromatic spectral energy distributions (SEDs), most counterparts appear to be powered by ongoing star formation. Power-law fits to the SEDs suggest that five objects in the 8.0 μm selected counterpart sample harbor dominant active galactic nuclei (AGNs; a sixth object is identified as a possible AGN). The 3.6-8.0 μm colors of the infrared-selected counterparts are significantly redder than the general IRAC galaxy population in the CUDSS 14 hour field.

KW - Cosmology: observations

KW - Galaxies: evolution

KW - Galaxies: formation

KW - Galaxies: high-redshift

KW - Infrared: Galaxies

KW - Stars: formation

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JO - Astrophysical Journal

JF - Astrophysical Journal

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ER -

Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the spitzer space telescope

Abstract

Keywords

ASJC Scopus subject areas

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