Isolated dwarf galaxies: from cuspy to flat dark matter density profiles and metalicity gradients
文献类型：期刊论文
| 作者 | Pasetto, S.1,2; Grebel, E. K.1; Berczik, P.1,3,4 ; Spurzem, R.1,3,5; Dehnen, W.6
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2010-05-01 |
| 卷号 | 514 |
| 关键词 | galaxies: dwarf galaxies: formation galaxies: evolution galaxies: kinematics and dynamics galaxies: abundances |
| 英文摘要 | The chemodynamical evolution of spherical multi-component self-gravitating models for isolated dwarf galaxies is studied. We compared their evolution with and without feedback effects from star formation processes. We found that initially cuspy dark matter profiles flatten with time without any special tuning conditions as a result of star formation. Thus the seemingly flattened profiles found in many dwarfs do not contradict the cuspy profiles predicted by cosmological models. We also calculated the chemical evolution of stars and gas, to permit comparisons with observational data. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000280504800014 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7638]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ Heidelberg, Zentrum Astron, Astron Rechen Inst, D-69117 Heidelberg, Germany 2.Max Planck Inst Astron, D-69117 Heidelberg, Germany 3.Chinese Acad Sci, NAOC, Beijing 100012, Peoples R China 4.NASU, MAO, UA-03680 Kiev, Ukraine 5.Peking Univ, Kavli Inst Astron & Astrophys, Beijing, Peoples R China 6.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England |
| 推荐引用方式 GB/T 7714 | Pasetto, S.,Grebel, E. K.,Berczik, P.,et al. Isolated dwarf galaxies: from cuspy to flat dark matter density profiles and metalicity gradients[J]. ASTRONOMY & ASTROPHYSICS,2010,514. |
| APA | Pasetto, S.,Grebel, E. K.,Berczik, P.,Spurzem, R.,&Dehnen, W..(2010).Isolated dwarf galaxies: from cuspy to flat dark matter density profiles and metalicity gradients.ASTRONOMY & ASTROPHYSICS,514. |
| MLA | Pasetto, S.,et al."Isolated dwarf galaxies: from cuspy to flat dark matter density profiles and metalicity gradients".ASTRONOMY & ASTROPHYSICS 514(2010). |
入库方式： OAI收割
来源：国家天文台
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