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EVOLUTION OF GALAXIES AND THEIR ENVIRONMENTS AT z=0.1-3 IN COSMOS
Scoville, N.1; Arnouts, S.2,3; Aussel, H.4; Benson, A.1,5; Bongiorno, A.6; Bundy, K.7; Calvo, M. A. A.8; Capak, P.9; Carollo, M.10; Civano, F.11; Dunlop, J.12; Elvis, M.11; Faisst, A.10; Finoguenov, A.13; Fu, Hai1,14; Giavalisco, M.15; Guo, Q.13,16; Ilbert, O.17; Iovino, A.18; Kajisawa, M.19; Kartaltepe, J.3; Leauthaud, A.7; Le Fevre, O.17; LeFloch, E.4; Lilly, S. J.10; Liu, C. T. -C.20,21,22; Manohar, S.1; Massey, R.23; Masters, D.24; McCracken, H. J.25; Mobasher, B.24; Peng, Y. -J.10; Renzini, A.26; Rhodes, J.1,27; Salvato, M.1,13; Sanders, D. B.28; Sarvestani, B. D.24; Scarlata, C.29; Schinnerer, E.30; Sheth, K.31; Shopbell, P. L.1; Smolcic, V.1,32; Taniguchi, Y.19; Taylor, J. E.33; White, S. D. M.13; Yan, L.9
2013-05-01
发表期刊ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷号206期号:1
摘要Large-scale structures (LSSs) out to z < 3.0 are measured in the Cosmic Evolution Survey (COSMOS) using extremely accurate photometric redshifts (photoz). The K-s-band-selected sample (from Ultra-Vista) is comprised of 155,954 galaxies. Two techniques-adaptive smoothing and Voronoi tessellation-are used to estimate the environmental densities within 127 redshift slices. Approximately 250 statistically significant overdense structures are identified out to z = 3.0 with shapes varying from elongated filamentary structures to more circularly symmetric concentrations. We also compare the densities derived for COSMOS with those based on semi-analytic predictions for Lambda CDM simulation and find excellent overall agreement between the mean densities as a function of redshift and the range of densities. The galaxy properties (stellar mass, spectral energy distributions (SEDs), and star formation rates (SFRs)) are strongly correlated with environmental density and redshift, particularly at z < 1.0-1.2. Classifying the spectral type of each galaxy using the rest-frame b - i color (from the photoz SED fitting), we find a strong correlation of early-type galaxies (E-Sa) with high-density environments, while the degree of environmental segregation varies systematically with redshift out to z similar to 1.3. In the highest density regions, 80% of the galaxies are early types at z = 0.2 compared to only 20% at z = 1.5. The SFRs and the star formation timescales exhibit clear environmental correlations. At z > 0.8, the SFR density is uniformly distributed over all environmental density percentiles, while at lower redshifts the dominant contribution is shifted to galaxies in lower density environments.
关键词Galaxies: Evolution Large-scale Structure Of Universe
DOI10.1088/0067-0049/206/1/3
收录类别SCI
语种英语
WOS记录号WOS:000318556300003
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8896
专题星系宇宙学研究部
作者单位1.CALTECH, Pasadena, CA 91125 USA
2.Canada France Hawaii Telescope Corp, Kamuela, HI 96743 USA
3.Aix Marseille Univ, CNRS, Lab Astrophys Marseille, UMR 7326, F-13388 Marseille, France
4.Univ Paris 07, CNRS, AIM Unite Mixte Rech CEA, UMR 158, Paris, France
5.Carnegie Observ, Pasadena, CA USA
6.Osserv Astron Roma, INAF, I-00040 Pomezia, Italy
7.Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778582, Japan
8.Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
9.CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA
10.ETH, Inst Astron, CH-8093 Zurich, Switzerland
11.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
12.Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
13.Max Planck Inst Extraterr Phys, D-85478 Garching, Germany
14.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA
15.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA
16.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
17.Lab Astrophys Marseille, F-13376 Marseille 12, France
18.Osserv Astron Brera, INAF, I-20159 Milan, Italy
19.Ehime Univ, Grad Sch Sci, Dept Phys, Matsuyama, Ehime 7908577, Japan
20.CUNY Coll Staten Isl, Dept Engn Sci & Phys, Astrophys Observ, Staten Isl, NY 10314 USA
21.Amer Museum Nat Hist, Dept Astrophys, New York, NY 10024 USA
22.Amer Museum Nat Hist, Hayden Planetarium, New York, NY 10024 USA
23.Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
24.Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA
25.Univ Paris 06, CNRS, UMR7095, Inst Astrophys Paris, F-75014 Paris, France
26.Osserv Astron Padova, INAF, I-35122 Padua, Italy
27.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
28.Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA
29.Univ Minnesota, Dept Phys & Astron, Minneapolis, MN 55455 USA
30.Max Planck Inst Astron, D-69117 Heidelberg, Germany
31.Natl Radio Astron Observ, Charlottesville, VA 22903 USA
32.Argelander Inst Astron, D-53121 Bonn, Germany
33.Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada
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Scoville, N.,Arnouts, S.,Aussel, H.,et al. EVOLUTION OF GALAXIES AND THEIR ENVIRONMENTS AT z=0.1-3 IN COSMOS[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,206(1).
APA Scoville, N..,Arnouts, S..,Aussel, H..,Benson, A..,Bongiorno, A..,...&Yan, L..(2013).EVOLUTION OF GALAXIES AND THEIR ENVIRONMENTS AT z=0.1-3 IN COSMOS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,206(1).
MLA Scoville, N.,et al."EVOLUTION OF GALAXIES AND THEIR ENVIRONMENTS AT z=0.1-3 IN COSMOS".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 206.1(2013).
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