A tale of two populations: the stellar mass of central and satellite galaxies
文献类型：期刊论文
| 作者 | Neistein, Eyal1; Li, Cheng2; Khochfar, Sadegh1; Weinmann, Simone M.3; Shankar, Francesco4; Boylan-Kolchin, Michael5 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2011-09-01 |
| 卷号 | 416期号:2页码:1486-1499 |
| 关键词 | galaxies: abundances galaxies: evolution galaxies: formation galaxies: haloes galaxies: luminosity function galaxies: statistics large-scale structure of Universe mass function |
| 英文摘要 | We develop a new empirical methodology to study the relation between the stellar mass of galaxies and the mass of their host subhaloes. Our approach is similar to abundance matching, and is based on assigning a stellar mass to each subhalo within a large cosmological N-body simulation. However, we significantly extend the method to include a different treatment for central and satellite galaxies, allowing the stellar mass of satellite galaxies to depend on both the host subhalo mass, and on the halo mass. Unlike in previous studies, our models are constrained by two observations: the stellar mass function of galaxies, and their autocorrelation functions (CFs). We present results for similar to 10(6) different successful models, showing that the uncertainty in the host subhalo mass reaches a factor of similar to 10 for a given stellar mass. Our results thus indicate that the host subhalo mass of central and satellite galaxies is poorly constrained by using information coming solely from the abundance and CFs of galaxies. In addition, we demonstrate that the fraction of stellar mass relative to the universal baryon fraction can vary between different models, and can reach similar to 0.6 for a specific population of low-mass galaxies. We conclude that additional observational constraints are needed, in order to better constrain the mass relation between haloes and galaxies. These might include weak lensing, satellite kinematics or measures of clustering other than the CFs. Moreover, CFs based on larger surveys with a better estimate of the systematic uncertainties are needed. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL-SKY-SURVEY ; LARGE-SCALE STRUCTURE ; DARK-MATTER HALOES ; DISTANT RED GALAXIES ; STAR-FORMATION ; CLUSTER GALAXIES ; OCCUPATION DISTRIBUTION ; DYNAMICAL FRICTION ; COSMIC TIME ; LUMINOSITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000295119900053 |
| 源URL | [http://119.78.226.72/handle/331011/26384]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Max Planck Inst Extraterr Phys, D-85748 Garching, Germany 2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Max Planck Inst Partner Grp, Shanghai 200030, Peoples R China 3.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands 4.Max Planck Inst Astrophys, D-85748 Garching, Germany 5.Univ Calif Irvine, Ctr Galaxy Evolut, Irvine, CA 92697 USA |
| 推荐引用方式 GB/T 7714 | Neistein, Eyal,Li, Cheng,Khochfar, Sadegh,et al. A tale of two populations: the stellar mass of central and satellite galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2011,416(2):1486-1499. |
| APA | Neistein, Eyal,Li, Cheng,Khochfar, Sadegh,Weinmann, Simone M.,Shankar, Francesco,&Boylan-Kolchin, Michael.(2011).A tale of two populations: the stellar mass of central and satellite galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,416(2),1486-1499. |
| MLA | Neistein, Eyal,et al."A tale of two populations: the stellar mass of central and satellite galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 416.2(2011):1486-1499. |
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