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SPITZER Observations of the SCUBA/VLA Sources in the Lockman Hole: Star Formation History of Infrared-Luminous Galaxies

E. Egami·H. Dole·J. -S. Huang·P. Perez-Gonzalez·E. Le Floc'h·C. Papovich·P. Barmby·R. J. Ivison·S. Serjeant·A. Mortier·D. T. Frayer·D. Rigopoulou·G. Lagache·G. H. Rieke·S. P. Willner·A. Alonso-Herrero·L. Bai·C. W. Engelbracht·G. G. Fazio·K. D. Gordon·D. C. Hines·K. A. Misselt·S. Miyazaki·J. E. Morrison·M. J. Rieke·J. R. Rigby·G. Wilson
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Abstract

We present Spitzer IRAC (3.6, 4.5, 5.8, 8.0 um) and MIPS (24 um) observations of the SCUBA submillimeter sources and uJy VLA radio sources in a 5'x5' area in the Lockman Hole East region. Out of the ~40 SCUBA/VLA sources in the field, Spitzer counterparts were detected for nearly all except for the few low-weight SCUBA detections. We show that the majority (80-90%) of the detected sources are cold (i.e., starburst-like) infrared-luminous galaxies (L_{IR} > 10^{11} Lsun) at redshift 0.5<z<3.5, whose star-formation rate density (SFRD) is comparable to that of the optically-selected star-forming galaxies.

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E. Egami, H. Dole, J. -S. Huang, P. Perez-Gonzalez, E. Le Floc'h, C. Papovich, P. Barmby, R. J. Ivison, S. Serjeant, A. Mortier, D. T. Frayer, D. Rigopoulou, G. Lagache, G. H. Rieke, S. P. Willner, A. Alonso-Herrero, L. Bai, C. W. Engelbracht, G. G. Fazio, K. D. Gordon, D. C. Hines, K. A. Misselt, S. Miyazaki, J. E. Morrison, M. J. Rieke, J. R. Rigby, G. Wilson. 2004-06-16. SPITZER Observations of the SCUBA/VLA Sources in the Lockman Hole: Star Formation History of Infrared-Luminous Galaxies. https://doi.org/10.1086/423322

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