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Modelling the number counts of early-type galaxies by pure luminosity evolution
He, P; Zhang, YZ; He, P , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
1998
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
卷号298期号:2页码:483-496
摘要In this paper, we explore the plausible luminosity evolution of early-type galaxies in different cosmological models by constructing a set of pure luminosity evolution (PLE) models via the choices of the star-formation rate (SFR) parameters and formation redshift z(f) of galaxies, with the observational constraints derived from the Hubble Space Telescope (HST) morphological number counts for elliptical and SO galaxies of the Medium Deep Survey (MDS) and the Hubble Deep Field (HDF). We find that the number counts of early-type galaxies can be explained by the pure luminosity evolution models, without invoking exotic scenarios such as merging or introducing an additional population, but the evolution should be nearly passive, with a high zf assumed. The conclusion is valid in all of the three cosmological models we adopt in this paper. We also present the redshift distributions for three bins of observed magnitudes in the F814w passband, to show the redshift at which the objects that dominate the counts at a given magnitude may be found. The predictions of the redshift distribution of 22.5 < b(j) < 24.0 are also presented for comparison with future data.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China
关键词High-redshift Galaxies Faint Blue Galaxies Elliptic Galaxies Colors Population Universe Constraints Samples Dust
学科领域Physics
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收录类别SCI
WOS记录号WOS:000075941500021
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12276
专题理论物理所SCI论文
通讯作者He, P , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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He, P,Zhang, YZ,He, P , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. Modelling the number counts of early-type galaxies by pure luminosity evolution[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,1998,298(2):483-496.
APA He, P,Zhang, YZ,&He, P , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(1998).Modelling the number counts of early-type galaxies by pure luminosity evolution.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,298(2),483-496.
MLA He, P,et al."Modelling the number counts of early-type galaxies by pure luminosity evolution".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 298.2(1998):483-496.
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