BLAST: RESOLVING THE COSMIC SUBMILLIMETER BACKGROUND

被引：142

作者：

Marsden, Gaelen ^{[1
]}

Ade, Peter A. R. ^{[2
]}

Bock, James J. ^{[3
]}

Chapin, Edward L. ^{[1
]}

Devlin, Mark J. ^{[4
]}

Dicker, Simon R. ^{[4
]}

Griffin, Matthew ^{[2
]}

Gundersen, Joshua O. ^{[5
]}

Halpern, Mark ^{[1
]}

Hargrave, Peter C. ^{[2
]}

Hughes, David H. ^{[6
]}

Klein, Jeff ^{[4
]}

Mauskopf, Philip ^{[2
]}

Magnelli, Benjamin ^{[7
]}

Moncelsi, Lorenzo ^{[2
]}

Netterfield, Calvin B. ^{[8
,9
]}

Ngo, Henry ^{[1
]}

Olmi, Luca ^{[10
,11
]}

Pascale, Enzo ^{[2
]}

Patanchon, Guillaume ^{[12
]}

Rex, Marie ^{[4
]}

Scott, Douglas ^{[1
]}

Semisch, Christopher ^{[4
]}

Thomas, Nicholas ^{[5
]}

Truch, Matthew D. P. ^{[4
]}

Tucker, Carole ^{[2
]}

Tucker, Gregory S. ^{[13
]}

Viero, Marco P. ^{[8
]}

Wiebe, Donald V. ^{[1
,9
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[2] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales

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

[4] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[5] Univ Miami, Dept Phys, Coral Gables, FL 33146 USA

[6] INAOE, Puebla, Mexico

[7] Univ Paris Diderot, Lab AIM, CEA DSM CNRS, IRFU Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France

[8] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H4, Canada

[9] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[10] Univ Puerto Rico, Dept Phys, Rio Piedras, PR 00931 USA

[11] Osserv Astrofis Arcetri, INAF, I-50125 Florence, Italy

[12] Univ Paris Diderot, Lab APC, F-75205 Paris, France

[13] Brown Univ, Dept Phys, Providence, RI 02912 USA

来源：

ASTROPHYSICAL JOURNAL | 2009年 / 707卷 / 02期

基金：

加拿大自然科学与工程研究理事会; 英国科学技术设施理事会;

关键词：

cosmology: observations; diffuse radiation; galaxies: evolution; galaxies: starburst; submillimeter; DEGREE EXTRAGALACTIC SURVEY; STAR-FORMATION HISTORY; DEEP FIELD-SOUTH; SCUBA SUPER-MAP; NUMBER COUNTS; PASSIVE GALAXIES; HIGH-REDSHIFT; SURVEY SHADES; SPITZER; HALF;

D O I：

10.1088/0004-637X/707/2/1729

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Balloon-borne Large Aperture Submillimeter Telescope (BLAST) has made 1 deg(2), deep, confusion-limited maps at three different bands, centered on the Great Observatories Origins Deep Survey South Field. By calculating the covariance of these maps with catalogs of 24 mu m sources from the Far-Infrared Deep Extragalactic Legacy Survey, we have determined that the total submillimeter intensities are 8.60 +/- 0.59, 4.93 +/- 0.34, and 2.27 +/- 0.20 nW m(-2) sr(-1) at 250, 350, and 500 mu m, respectively. These numbers are more precise than previous estimates of the cosmic infrared background (CIB) and are consistent with 24 mu m-selected galaxies generating the full intensity of the CIB. We find that the fraction of the CIB that originates from sources at z >= 1.2 increases with wavelength, with 60% from high-redshift sources at 500 mu m. At all BLAST wavelengths, the relative intensity of high-z sources is higher for 24 mu m-faint sources than that for 24 mu m-bright sources. Galaxies identified as active galactic nuclei (AGNs) by their Infrared Array Camera colors are 1.6-2.6 times brighter than the average population at 250-500 mu m, consistent with what is found for X-ray-selected AGNs. BzK-selected galaxies are found to be moderately brighter than typical 24 mu m-selected galaxies in the BLAST bands. These data provide high-precision constraints for models of the evolution of the number density and intensity of star-forming galaxies at high redshift.

引用

页码：1729 / 1739

页数：11

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