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The dependence of tidal stripping efficiency on the satellite and host galaxy morphology
Chang, Jiang1,2; Maccio, Andrea V.2; Kang, Xi1
2013-06-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume431Issue:4Pages:3533-3542
Corresponding AuthorChang, J (reprint author), Acad Sinica, Purple Mt Observ, Partner Grp MPI Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China. Email: jchang@mpia.de
AbstractIn this paper, we study the tidal stripping process for satellite galaxies orbiting around a massive host galaxy, and focus on its dependence on the morphology of both satellite and host galaxy. For this purpose, we use three different morphologies for the satellites: pure disc, pure bulge and a mixture bulge+disc. Two morphologies are used for the host galaxies: bulge+disc and pure bulge. We find that while the spheroidal stellar component experiences a constant power law like mass removal, the disc is exposed to an exponential mass-loss when the tidal radius of the satellite is of the same order of the disc scalelength. This dramatic mass-loss is able to completely remove the stellar component on time-scale of 100 Myr. As a consequence two satellites with the same stellar and dark matter masses, on the same orbit could either retain considerable fraction of their stellar mass after 10 Gyr or being completely destroyed, depending on their initial stellar morphology. We find that there are two characteristic time-scales describing the beginning and the end of the disc removal, whose values are related to the size of the disc. This result can be easily incorporated in semi-analytical models. We also find that the host morphology and the orbital parameters also have an effect on determining the mass removal, but they are of secondary importance with respect to satellite morphology. We conclude that satellite morphology has a very strong effect on the efficiency of stellar stripping and should be taken into account in modelling galaxy formation and evolution.
KeywordMethods: Numerical Galaxies: Evolution Galaxies: Interactions Galaxies: Kinematics And Dynamics
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/mnras/stt434
WOS KeywordDWARF SPHEROIDAL GALAXIES ; INTRACLUSTER PLANETARY-NEBULAE ; DARK-MATTER SUBSTRUCTURE ; MILKY-WAY ; DYNAMICAL FRICTION ; HALO SUBSTRUCTURE ; MERGER REMNANTS ; STELLAR HALOS ; DISK GALAXIES ; HIGH-REDSHIFT
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000319479000045
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9763
Collection暗物质和空间天文实验室
Affiliation1.Acad Sinica, Purple Mt Observ, Partner Grp MPI Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Max Planck Inst Astron, D-69117 Heidelberg, Germany
Recommended Citation
GB/T 7714
Chang, Jiang,Maccio, Andrea V.,Kang, Xi. The dependence of tidal stripping efficiency on the satellite and host galaxy morphology[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,431(4):3533-3542.
APA Chang, Jiang,Maccio, Andrea V.,&Kang, Xi.(2013).The dependence of tidal stripping efficiency on the satellite and host galaxy morphology.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,431(4),3533-3542.
MLA Chang, Jiang,et al."The dependence of tidal stripping efficiency on the satellite and host galaxy morphology".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 431.4(2013):3533-3542.
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