The identification of the submillimeter galaxy SMM J00266+1708

被引:61
作者
Frayer, DT
Smail, I
Ivison, RJ
Scoville, NZ
机构
[1] CALTECH, Dept Astron, Pasadena, CA 91125 USA
[2] Univ Durham, Dept Phys, Durham DH1 3LE, England
[3] UCL, Dept Phys & Astron, London WC1E 6BT, England
基金
美国国家科学基金会;
关键词
galaxies : evolution; galaxies : formation; galaxies : individual (SMM J00266+1708); galaxies : starburst;
D O I
10.1086/301571
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report the detection of 1.3 mm continuum and near-infrared K-band (2.2 mu m) emission from the submillimeter galaxy SMM J00266 + 1708. Although this galaxy is among the brightest submillimeter sources detected in the blank-sky surveys (L similar to 10(13) L.), SMM J00266 + 1708 had no reliable optical or near-infrared counterpart. We used sensitive interferometric 1.3 mm observations with the Owens Valley Millimeter Array to determine the position of the submillimeter galaxy accurately. Follow-up near-infrared imaging with the Reck I telescope uncovered a new faint red galaxy at K = 22.5 mag, which is spatially coincident with the 1.3 mm emission. This is currently the faintest confirmed counterpart of a submillimeter galaxy. Although the redshift of SMM. J00266+1708 is still unknown, its high submillimeter/radio spectral index suggests that the system is at high redshift (z greater than or similar to 2). Approximately 50% or more of the submillimeter galaxies are faint red galaxies similar to SMM J00266 + 1708. These ultraluminous obscured galaxies account for a significant fraction of the total amount of star formation at high redshift despite being missed by optical surveys.
引用
收藏
页码:1668 / 1674
页数:7
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