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Cold stream stability during minor mergers
Wang, Liang1,2; Zhu, Weishan3,4; Feng, Long-Long1; Maccio, Andrea V.2; Chang, Jiang1,2; Kang, Xi1
2014-03-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume439Issue:1Pages:L85-L89
AbstractWe 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.
KeywordGalaxies: Formation Galaxies: Interactions
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/mnrasl/slu005
WOS KeywordSTAR-FORMING GALAXY ; GAS ACCRETION ; COOL GAS ; HALOES ; MODELS ; CLOUDS
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000333297700018
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10686
Collection星系宇宙学和暗能量研究团组
Affiliation1.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
Recommended Citation
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.
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