Size distribution of galaxies in SDSS DR7: weak dependence on halo environment
文献类型：期刊论文
| 作者 | Zhang, You-Cai2; Yang, Xiao-Hu1,3,4 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2019 |
| 卷号 | 19期号:1页码:14 |
| ISSN号 | 1674-4527 |
| 关键词 | large-scale structure of universe methods: statistical cosmology: observations |
| DOI | 10.1088/1674-4527/19/1/6 |
| 英文摘要 | Using a sample of galaxies selected from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) and a catalog of bulge-disk decompositions, we study how the size distribution of galaxies depends on the intrinsic properties of galaxies, such as concentration, morphology, specific star formation rate (sSFR), and bulge fraction, and on the large-scale environments in the context of central/satellite decomposition, halo environment, the cosmic web: cluster, filament, sheet and void, as well as galaxy number density. We find that there is a strong dependence of the luminosity- or mass-size relation on the galaxy concentration, morphology, sSFR and bulge fraction. Compared with late-type (spiral) galaxies, there is a clear trend of smaller sizes and steeper slope for early-type (elliptical) galaxies. Similarly, galaxies with a high bulge fraction have smaller sizes and steeper slopes than those with a low bulge fraction. Fitting formulae of the average luminosity- and mass-size relations are provided for galaxies with these different intrinsic properties. Examining galaxies in terms of their large scale environments, we find that the masssize relation has some weak dependence on the halo mass and central/satellite segregation for galaxies within mass range 9.0 <= log M-* <= 10.5, where satellites or galaxies in more massive halos have slightly smaller sizes than their counterparts, while the cosmic web and local number density dependence of the mass-size relation is almost negligible. |
| 资助项目 | National Basic Research Program of China (973 Program)[2015CB857002] ; National Natural Science Foundation of China[11233005] ; National Natural Science Foundation of China[11621303] ; High Performance Computing Resource in the Core Facility for Advanced Research Computing at Shanghai Astronomical Observatory ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah ; Brazilian Participation Group ; Carnegie Institution for Science ; Carnegie Mellon University ; Chilean Participation Group ; French Participation Group ; Harvard-Smithsonian Center for Astrophysics ; Instituto de Astrofisica de Canarias ; Johns Hopkins University ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National Laboratory ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatories of China ; New Mexico State University ; New York University ; University of Notre Dame ; Observatorio Nacional/MCTI ; Ohio State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; United Kingdom Participation Group ; Universidad Nacional Autonoma de Mexico ; University of Arizona ; University of Colorado Boulder ; University of Oxford ; University of Portsmouth ; University of Utah ; University of Virginia ; University of Washington ; University of Wisconsin ; Vanderbilt University ; Yale University |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| WOS记录号 | WOS:000456345900006 |
| 源URL | [http://119.78.226.72/handle/331011/31989]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Zhang, You-Cai |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Dept Astron, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China 2.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 3.Shanghai Jiao Tong Univ, IFSA Collaborat Innovat Ctr, Shanghai 200240, Peoples R China 4.Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, You-Cai,Yang, Xiao-Hu. Size distribution of galaxies in SDSS DR7: weak dependence on halo environment[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(1):14. |
| APA | Zhang, You-Cai,&Yang, Xiao-Hu.(2019).Size distribution of galaxies in SDSS DR7: weak dependence on halo environment.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(1),14. |
| MLA | Zhang, You-Cai,et al."Size distribution of galaxies in SDSS DR7: weak dependence on halo environment".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.1(2019):14. |
入库方式： OAI收割
来源：上海天文台
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