A LABOCA SURVEY OF THE EXTENDED CHANDRA DEEP FIELD SOUTH-SUBMILLIMETER PROPERTIES OF NEAR-INFRARED SELECTED GALAXIES
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2010-08-10 |
| 卷号 | 719期号:1页码:483-496 |
| 关键词 | cosmology: observations galaxies: evolution galaxies: formation galaxies: high-redshift |
| ISSN号 | 0004-637X |
| 英文摘要 | Using 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EXTREMELY 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000280653100042 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1027]  |
| 专题 | 紫金山天文台_分子云与恒星形成研究团组 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：紫金山天文台
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