Cold stream stability during minor mergers
文献类型：期刊论文
| 作者 | Wang, Liang1,2; Zhu, Weishan3,4; Feng, Long-Long1 ; Maccio, Andrea V.2; Chang, Jiang1,2; Kang, Xi1
|
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2014-03-01 |
| 卷号 | 439期号:1页码:L85-L89 |
| 关键词 | galaxies: formation galaxies: interactions |
| ISSN号 | 0035-8711 |
| 英文摘要 | We use high-resolution Eulerian simulations to study the stability of cold gas flows in a galaxy size dark matter halo (10(12) M-circle dot) at redshift z = 2. Our simulations show that a cold stream penetrating a hot gaseous halo is stable against thermal convection and Kelvin-Helmholtz instability. We then investigate the effect of a satellite orbiting the main halo in the plane of the stream. The satellite is able to perturb the stream and to inhibit cold gas accretion towards the centre of the halo for 0.5 Gyr. However, if the supply of cold gas at large distances is kept constant, the cold stream is able to re-establish itself after 0.3 Gyr. We conclude that cold streams are very stable against a large variety of internal and external perturbations. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | STAR-FORMING GALAXY ; GAS ACCRETION ; COOL GAS ; HALOES ; MODELS ; CLOUDS |
| 收录类别 | SCI |
| 原文出处 | 10.1093/mnrasl/slu005 |
| 语种 | 英语 |
| WOS记录号 | WOS:000333297700018 |
| 公开日期 | 2014-11-21 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10686]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Partner Grp, Max Planck Inst Astron, Nanjing 210008, Peoples R China 2.Max Planck Inst Astron, D-69117 Heidelberg, Germany 3.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 4.Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Liang,Zhu, Weishan,Feng, Long-Long,et al. Cold stream stability during minor mergers[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,439(1):L85-L89. |
| APA | Wang, Liang,Zhu, Weishan,Feng, Long-Long,Maccio, Andrea V.,Chang, Jiang,&Kang, Xi.(2014).Cold stream stability during minor mergers.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,439(1),L85-L89. |
| MLA | Wang, Liang,et al."Cold stream stability during minor mergers".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 439.1(2014):L85-L89. |
入库方式： OAI收割
来源：紫金山天文台
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