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

被引：29

作者：

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.

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[2] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3YB, Wales

[3] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[4] Univ Oxford, Dept Astrophys, DWB, Oxford OX1 3RH, England

[5] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[6] Inst Astrophys, F-75014 Paris, France

[7] Swiss Fed Inst Technol, Dept Phys, Inst Astron, CH-8093 Zurich, Switzerland

[8] Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA

[9] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

ASTROPHYSICAL JOURNAL | 2006年 / 644卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

cosmology : observations; galaxies : evolution; galaxies : formation; galaxies : high-redshift; infrared : galaxies; stars : formation;

D O I：

10.1086/503861

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We identify 17 possible 8.0 mu m 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 mu m 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 mu m selected counterpart sample harbor dominant active galactic nuclei (AGNs; a sixth object is identified as a possible AGN). The 3.6-8.0 mu m colors of the infrared-selected counterparts are significantly redder than the general IRAC galaxy population in the CUDSS 14 hour field.

引用

页码：778 / 791

页数：14

共 42 条

[41] The Canada-UK deep submillimeter survey. VII. Optical and near-infrared identifications for the 14 hour field [J].