ENVIRONMENT OF MAMBO GALAXIES IN THE COSMOS FIELD

被引：27

作者：

Aravena, M. ^{[1
,2
,3
]}

Bertoldi, F. ^{[2
]}

Carilli, C. ^{[4
]}

Schinnerer, E. ^{[5
]}

McCracken, H. J. ^{[6
]}

Salvato, M.

Riechers, D.

Sheth, K. ^{[7
]}

Smolcic, V.

Capak, P. ^{[7
]}

Koekemoer, A. M. ^{[8
]}

Menten, K. M. ^{[3
]}

机构：

[1] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[2] Argelander Inst Astron, D-53121 Bonn, Germany

[3] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[4] Natl Radio Astron Observ, Socorro, NM 87801 USA

[5] Max Planck Inst Astron, D-69117 Heidelberg, Germany

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

[7] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA

[8] Space Telescope Sci Inst, Baltimore, MD 21218 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2010年 / 708卷 / 01期

关键词：

galaxies: clusters: general; galaxies: evolution; galaxies: high-redshift; galaxies: starburst; DEGREE EXTRAGALACTIC SURVEY; EVOLUTION SURVEY COSMOS; GOODS-N FIELD; SUBMILLIMETER GALAXIES; NUMBER COUNTS; HIGH-REDSHIFT; STAR-FORMATION; PHOTOMETRIC REDSHIFTS; RADIO GALAXIES; SOURCE CATALOG;

D O I：

10.1088/2041-8205/708/1/L36

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Submillimeter galaxies (SMGs) represent a dust-obscured high-redshift population undergoing massive star formation activity. Their properties and space density have suggested that they may evolve into spheroidal galaxies residing in galaxy clusters. In this Letter, we report the discovery of compact (similar to 10 ''-20 '') galaxy overdensities centered at the position of three SMGs detected with the Max-Planck millimeter bolometer camera in the COSMOS field. These associations are statistically significant. The photometric redshifts of galaxies in these structures are consistent with their associated SMGs; all of them are between z = 1.4 and 2.5, implying projected physical sizes of similar to 170 kpc for the overdensities. Our results suggest that about 30% of the radio-identified bright SMGs in that redshift range form in galaxy density peaks in the crucial epoch when most stars formed.

引用

页码：L36 / L41

页数：6

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