The abundance of satellite galaxies in the inner region of Lambda CDM Milky Way sized haloes
文献类型：期刊论文
| 作者 | Li, Ming1; Gao, Liang1,2; Wang, Jie1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 483期号:2页码:2000-2006 |
| 关键词 | methods: numerical galaxies: dwarf galaxies: haloes dark matter cosmology: theory |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/sty3292 |
| 英文摘要 | The concordance lambda cold dark matter (Lambda CDM) cosmology predicts tens of satellite galaxies distributed in the inner region (<40 kpc) of the Milky Way (MW), yet at most 12 were discovered at present day, including three discovered very recently by Dark Energy Survey (DES) and five from other surveys (e.g. PanSTARRS, MagLiteS). We use five ultra-high resolution simulations of MW-sized dark matter haloes from the AQUARIUS project, combined with GALFORM semi-analytical galaxy formation model, to investigate properties of the model satellite galaxy population inside 40 kpc of MW-sized haloes. On average, in each halo this model predicts about 20 inner satellite galaxies, among them five are comparable to the classic satellites in the luminosity, these are in stark contrast to the corresponding numbers in observations. We further investigate the survivability of these model inner satellites in the presence of a central stellar disc with a set of ideal simulations. These are done by re-evolving a quarter (30) of the whole AQUARIUS inner satellite galaxies (121) by including a static disc potential in addition to the MW halo. Our finding is that the additional disc completely disrupts 40 per cent of these satellites and results in 14 satellite galaxies within the 40 kpc of each AQUARIUS at the end, in reasonably well agreement with observations. |
| WOS关键词 | DARK-MATTER SUBSTRUCTURE ; DWARF GALAXIES ; MASS ; POPULATION ; SUBHALOES ; EVOLUTION ; DEPLETION ; PROFILES ; MODELS |
| 资助项目 | National Key Program for Science and Technology Research and Development[2015CB857005] ; National Key Program for Science and Technology Research and Development[2017YFB0203300] ; NSFC[11390372] ; NSFC[11425312] ; NSFC[11503032] ; NSFC[11573031] ; NSFC[11851301] ; NSFC[11873051] ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows[2015LH0014] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000462258200044 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; NSFC ; NSFC ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; NSFC ; NSFC ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; NSFC ; NSFC ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows ; National Key Program for Science and Technology Research and Development ; National Key Program for Science and Technology Research and Development ; NSFC ; NSFC ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows ; CPSF-CAS joint Foundation for Excellent Postdoctoral Fellows |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/25726]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Li, Ming |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Beijing 100012, Peoples R China 2.Univ Durham, Dept Phys, Sci Labs, Inst Computat Cosmol, South Rd, Durham DH1 3LE, England |
| 推荐引用方式 GB/T 7714 | Li, Ming,Gao, Liang,Wang, Jie. The abundance of satellite galaxies in the inner region of Lambda CDM Milky Way sized haloes[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,483(2):2000-2006. |
| APA | Li, Ming,Gao, Liang,&Wang, Jie.(2019).The abundance of satellite galaxies in the inner region of Lambda CDM Milky Way sized haloes.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,483(2),2000-2006. |
| MLA | Li, Ming,et al."The abundance of satellite galaxies in the inner region of Lambda CDM Milky Way sized haloes".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 483.2(2019):2000-2006. |
入库方式： OAI收割
来源：国家天文台
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