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A LABOCA SURVEY OF THE EXTENDED CHANDRA DEEP FIELD SOUTH-SUBMILLIMETER PROPERTIES OF NEAR-INFRARED SELECTED GALAXIES
Greve, T. R.1; Weiss, A.2; Walter, F.1; Smail, I.3; Zheng, X. Z.4; Knudsen, K. K.5; Coppin, K. E. K.3; Kovacs, A.2; Bell, E. F.1; de Breuck, C.6; Dannerbauer, H.1; Dickinson, M.7; Gawiser, E.8; Lutz, D.9; Rix, H. -W.1; Schinnerer, E.1; Alexander, D.3; Bertoldi, F.5; Brandt, N.10; Chapman, S. C.11; Ivison, R. J.12; Koekemoer, A. M.13; Kreysa, E.2; Kurczynski, P.8; Menten, K.2; Siringo, G.; Swinbank, M.3; van der Werf, P.14
2010-08-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume719Issue:1Pages:483-496
AbstractUsing the 330 hr ESO-MPG 870 mu m survey of the Extended Chandra Deep Field South (ECDF-S) obtained with the Large Apex BOlometer CAmera (LABOCA) on the Atacama Pathfinder EXperiment (APEX), we have carried out a stacking analysis at submillimeter (submm) wavelengths of a sample of 8266 near-infra-red (near-IR) selected (K(vega) <= 20) galaxies, including 893 BzK galaxies, 1253 extremely red objects (EROs), and 737 distant red galaxies (DRGs), selected from the Multi-wavelength Survey by Yale-Chile (MUSYC). We measure average 870 mu m fluxes of 0.22 +/- 0.01 mJy (22.0 sigma), 0.48 +/- 0.04 mJy (12.0 sigma), 0.39 +/- 0.03 mJy (13.0 sigma), and 0.43 +/- 0.04 mJy (10.8 sigma) for the K(vega) <= 20, BzK, ERO, and DRG samples, respectively. For the BzK, ERO, and DRG sub-samples, which overlap to some degree and are likely to be at z similar or equal to 1-2, this implies an average far-IR luminosity of similar to(1-5) x 10(11) L(circle dot) and star formation rate (SFR) of similar to 20-90M(circle dot). Splitting the BzK galaxies into star-forming (sBzK) and passive (pBzK) galaxies, the former is significantly detected (0.50 +/- 0.04 mJy, 12.5 sigma) while the latter is only marginally detected (0.34 +/- 0.10 mJy, 3.4 sigma), thus confirming that the sBzK and pBzK criteria to some extent select obscured, star-forming, and truly passive galaxies, respectively. The K(vega) <= 20 galaxies are found to contribute 7.27 +/- 0.34 Jy deg(-2) (16.5% +/- 5.7%) to the 870 mu m extragalactic background light (EBL). sBzK and pBzK galaxies contribute 1.49 +/- 0.22 Jy deg-2 (3.4% +/- 1.3%) and 0.20 +/- 0.14 Jy deg(-2) (0.5% +/- 0.3%) to the EBL. We present the first delineation of the average submm signal from the K(vega) <= 20 selected galaxies and their contribution to the submm EBL as a function of (photometric) redshift, and find a decline in the average submm signal (and therefore IR luminosity and SFR) by a factor similar to 2-3 from z similar to 2 to z similar to 0. This is in line with a cosmic star formation history in which the star formation activity in galaxies increases significantly at z similar to 1. A linear correlation between the average 24 mu m and 870 mu m flux densities is found for the Kvega <= 20 galaxies with 24 mu m fluxes less than or similar to 350 mu Jy (corresponding to LIR similar or equal to 1.5 x 10(12) L(circle dot) at z similar to 2), while at higher 24 mu m fluxes there is no correlation. This behavior suggests that star formation, and not active galactic nuclei (AGNs), is in general responsible for the bulk of the mid-IR emission of LIR similar to 1.5 x 10(12) L(circle dot) systems, while in more luminous systems the AGN makes a significant contribution to the 24 mu m emission. By mapping the stacked 870 mu m signal across the B - z versus z - K diagram we have confirmed the ability of the sBzK selection criterion to select star-forming galaxies at z > 1, although our analysis suggests that the subset of sBzK galaxies which are also EROs are responsible for >80% of the submm emission from the entire sBzK population.
KeywordCosmology: Observations Galaxies: Evolution Galaxies: Formation Galaxies: High-redshift
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/719/1/483
WOS KeywordEXTREMELY RED GALAXIES ; YALE-CHILE MUSYC ; DEGREE EXTRAGALACTIC SURVEY ; STAR-FORMATION HISTORY ; POINT-SOURCE CATALOGS ; K-SELECTED GALAXIES ; VLT/FORS2 SPECTROSCOPY ; MULTIWAVELENGTH SURVEY ; OPTICAL SPECTROSCOPY ; FORMING GALAXIES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000280653100042
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/1027
Collection分子云与恒星形成研究团组
Affiliation1.Max Planck Inst Astron, D-69117 Heidelberg, Germany
2.Max Planck Inst Radioastron, D-53121 Bonn, Germany
3.Univ Durham, Inst Computat Cosmol, Durham DH1 6BH, England
4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
5.Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany
6.European So Observ, D-8046 Garching, Germany
7.Natl Opt Astron Observ, Tucson, AZ 85719 USA
8.Yale Univ, Dept Astron, New Haven, CT 06511 USA
9.Max Planck Inst Extraterr Phys, D-85741 Garching, Germany
10.Penn State Univ, Davey Lab 525, University Pk, PA 16802 USA
11.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
12.Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland
13.Space Telescope Sci Inst, Baltimore, MD 21218 USA
14.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands
Recommended Citation
GB/T 7714
Greve, T. R.,Weiss, A.,Walter, F.,et al. A LABOCA SURVEY OF THE EXTENDED CHANDRA DEEP FIELD SOUTH-SUBMILLIMETER PROPERTIES OF NEAR-INFRARED SELECTED GALAXIES[J]. ASTROPHYSICAL JOURNAL,2010,719(1):483-496.
APA Greve, T. R..,Weiss, A..,Walter, F..,Smail, I..,Zheng, X. Z..,...&van der Werf, P..(2010).A LABOCA SURVEY OF THE EXTENDED CHANDRA DEEP FIELD SOUTH-SUBMILLIMETER PROPERTIES OF NEAR-INFRARED SELECTED GALAXIES.ASTROPHYSICAL JOURNAL,719(1),483-496.
MLA Greve, T. R.,et al."A LABOCA SURVEY OF THE EXTENDED CHANDRA DEEP FIELD SOUTH-SUBMILLIMETER PROPERTIES OF NEAR-INFRARED SELECTED GALAXIES".ASTROPHYSICAL JOURNAL 719.1(2010):483-496.
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