THE COSMIC EVOLUTION OF FAINT SATELLITE GALAXIES AS A TEST OF GALAXY FORMATION AND THE NATURE OF DARK MATTER
文献类型：期刊论文
| 作者 | Nierenberg, A. M.1; Treu, T.1; Menci, N.2; Lu, Y.3 ; Wang, W.4
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2013-08-01 |
| 卷号 | 772期号:2页码:1 |
| 关键词 | dark matter galaxies: dwarf galaxies: evolution galaxies: luminosity function galaxies: stellar content mass function |
| 英文摘要 | The standard cosmological model based on cold dark matter (CDM) predicts a large number of subhalos for each galaxy-size halo. Matching the subhalos to the observed properties of luminous satellites of galaxies in the local universe poses a significant challenge to our understanding of the astrophysics of galaxy formation. We show that the cosmic evolution and host mass dependence of the luminosity function of satellites provide a powerful new diagnostic to disentangle astrophysical effects from variations in the underlying dark matter mass function. We illustrate this by comparing recent observations of satellites between redshifts 0.1 < z < 0.8 based on Hubble Space Telescope images, with predictions from three different state-of-the-art semi-analytic models applied to CDM power spectra, with one model also applied to a warm dark matter (WDM) spectrum. We find that even though CDM models provide a reasonable fit to the local luminosity function of satellites around galaxies comparable to the Milky Way, they do not reproduce the data as well for different redshifts and host galaxy stellar masses, indicating that further improvements in the description of star formation are likely needed. The WDM model matches the observed mass dependence and redshift evolution of satellite galaxies more closely, indicating that a modification of the underlying power spectrum may offer an alternative solution to this tension. We conclude by presenting predictions for the color distribution of satellite galaxies to demonstrate how future observations will be able to further distinguish between these models and to help constrain baryonic and non-baryonic physics. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | PROBE WMAP OBSERVATIONS ; OBSERVATIONS COSMOLOGICAL INTERPRETATION ; STELLAR MASS FUNCTION ; LARGE-SCALE STRUCTURE ; MILKY-WAY SATELLITES ; SPATIAL-DISTRIBUTION ; LUMINOSITY FUNCTION ; STAR-FORMATION ; GALACTIC SATELLITES ; STERILE NEUTRINOS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000322024700068 |
| 源URL | [http://119.78.226.72/handle/331011/18070]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA 2.NAF Osservatorio Astron Roma, I-00040 Monte Porzio Catone, Italy 3.Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94309 USA 4.Chinese Acad Sci, Shanghai Astron Observ, Max Planck Inst Partner Grp, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nierenberg, A. M.,Treu, T.,Menci, N.,et al. THE COSMIC EVOLUTION OF FAINT SATELLITE GALAXIES AS A TEST OF GALAXY FORMATION AND THE NATURE OF DARK MATTER[J]. ASTROPHYSICAL JOURNAL,2013,772(2):1. |
| APA | Nierenberg, A. M.,Treu, T.,Menci, N.,Lu, Y.,&Wang, W..(2013).THE COSMIC EVOLUTION OF FAINT SATELLITE GALAXIES AS A TEST OF GALAXY FORMATION AND THE NATURE OF DARK MATTER.ASTROPHYSICAL JOURNAL,772(2),1. |
| MLA | Nierenberg, A. M.,et al."THE COSMIC EVOLUTION OF FAINT SATELLITE GALAXIES AS A TEST OF GALAXY FORMATION AND THE NATURE OF DARK MATTER".ASTROPHYSICAL JOURNAL 772.2(2013):1. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。