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MULTI-WAVELENGTH STUDY OF A COMPLETE IRAC 3.6 mu m SELECTED GALAXY SAMPLE: A FAIR CENSUS OF RED AND BLUE POPULATIONS AT REDSHIFTS 0.4-1.2
Huang, J-S1,2; Faber, S. M.3; Willmer, C. N. A.4; Rigopoulou, D.5; Koo, D.3; Newman, J.6; Shu, C.7; Ashby, M. L. N.2; Barmby, P.8; Coil, A.9,10; Luo, Z.7; Magdis, G.5; Wang, T.2,11; Weiner, B.4; Willner, S. P.2; Zheng, X. Z.12; Fazio, G. G.2
2013-03-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume766Issue:1Pages:21(17PP)
Corresponding AuthorHuang, JS (reprint author), Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China. Email: 0
AbstractWe present a multi-wavelength study of a 3.6 mu m selected galaxy sample in the Extended Groth Strip (EGS). The sample is complete for galaxies with stellar mass >10(9.5) M-circle dot and redshift 0.4 < z < 1.2. In this redshift range, the Infrared Array Camera 3.6 mu m band measures the rest-frame near-infrared band, permitting nearly unbiased selection with respect to both quiescent and star-forming galaxies. The numerous spectroscopic redshifts available in the EGS are used to train an artificial neural network to estimate photometric redshifts. The distribution of photometric redshift errors is Gaussian with standard deviation similar to 0.025(1 + z), and the fraction of redshift failures (>3 sigma errors) is about 3.5%. A new method of validation based on pair statistics confirms the estimate of standard deviation even for galaxies lacking spectroscopic redshifts. Basic galaxy properties measured include rest-frame U - B colors, B- and K-band absolute magnitudes, and stellar masses. We divide the sample into quiescent and star-forming galaxies according to their rest-frame U - B colors and 24-3.6 mu m flux density ratios and derive rest K-band luminosity functions and stellar mass functions for quiescent, star-forming, and all galaxies. The results show that massive, quiescent galaxies were in place by z approximate to 1, but lower mass galaxies generally ceased their star formation at later epochs.
KeywordCosmology: Observations Galaxies: Distances And Redshifts Galaxies: Evolution Galaxies: Luminosity Function, Mass Function
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/766/1/21
WOS KeywordSTAR-FORMING GALAXIES ; EXTENDED GROTH STRIP ; BAND LUMINOSITY FUNCTION ; LYMAN BREAK GALAXIES ; ESTIMATING PHOTOMETRIC REDSHIFTS ; SPECTRAL ENERGY-DISTRIBUTIONS ; ARTIFICIAL NEURAL-NETWORKS ; DARK-MATTER HALOES ; DIGITAL SKY SURVEY ; DEEP FIELD SOUTH
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000316054000021
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9796
Collection毫米波和亚毫米波技术实验室
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
3.Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA
4.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
5.Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England
6.Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA
7.Shanghai Normal Univ, Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China
8.Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada
9.Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
10.Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA
11.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210008, Jiangsu, Peoples R China
12.Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Huang, J-S,Faber, S. M.,Willmer, C. N. A.,et al. MULTI-WAVELENGTH STUDY OF A COMPLETE IRAC 3.6 mu m SELECTED GALAXY SAMPLE: A FAIR CENSUS OF RED AND BLUE POPULATIONS AT REDSHIFTS 0.4-1.2[J]. ASTROPHYSICAL JOURNAL,2013,766(1):21(17PP).
APA Huang, J-S.,Faber, S. M..,Willmer, C. N. A..,Rigopoulou, D..,Koo, D..,...&Fazio, G. G..(2013).MULTI-WAVELENGTH STUDY OF A COMPLETE IRAC 3.6 mu m SELECTED GALAXY SAMPLE: A FAIR CENSUS OF RED AND BLUE POPULATIONS AT REDSHIFTS 0.4-1.2.ASTROPHYSICAL JOURNAL,766(1),21(17PP).
MLA Huang, J-S,et al."MULTI-WAVELENGTH STUDY OF A COMPLETE IRAC 3.6 mu m SELECTED GALAXY SAMPLE: A FAIR CENSUS OF RED AND BLUE POPULATIONS AT REDSHIFTS 0.4-1.2".ASTROPHYSICAL JOURNAL 766.1(2013):21(17PP).
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