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The relative efficiencies of bars and clumps in driving disc stars to retrograde motion
Fiteni, Karl1; Caruana, Joseph1,2; Amarante, Joao A. S.3,4; Debattista, Victor P.1,5; Silva, Leandro Beraldo E.5
2021-05-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume503Issue:1Pages:1418-1430
AbstractThe presence of stars on retrograde orbits in disc galaxies is usually attributed to accretion events, both via direct accretion, and through the heating of the disc stars. Recent studies have shown that retrograde orbits can also be produced via scattering by dense clumps, which are often present in the early stages of a galaxy's evolution. However, so far it has been unclear whether other internally driven mechanisms, such as bars, are also capable of driving retrograde motion. Therefore, in this paper, we investigate the efficiencies with which bars and clumps produce retrograde orbits in disc galaxies. We do this by comparing the retrograde fractions and the spatial distributions of the retrograde populations in four N-body+smooth particle hydrodynamics (SPH) simulations of isolated disc galaxies spanning a range of evolutionary behaviours. We find that both bars and clumps are capable of generating significant retrograde populations of order similar to 10 of all stars. We also find that while clump-driven retrograde stars may be found at large galactocentric radii, bar-driven retrograde stars remain in the vicinity of the bar, even if the bar dissolves. Consequently, we find that retrograde stars in the Solar neighbourhood in the clumpy models are exclusively clump-driven, but this is a trace population, constituting of the total stellar population in this region. Finally, we find that neither bars (including dissolving ones) nor clumps in the models are able to produce rotationally supported counterrotating discs.
Keywordgalaxies: bar galaxies: disc galaxies: evolution galaxies: kinematics and dynamics
Funding OrganizationCOST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; COST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; COST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; COST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
DOI10.1093/mnras/stab619
WOS KeywordROTATING STELLAR DISKS ; SECULAR EVOLUTION ; BARRED GALAXIES ; GIANT CLUMPS ; FORMING GALAXIES ; SPIRAL GALAXIES ; HALO ; I. ; SIMULATIONS ; BULGES
Language英语
Funding ProjectCOST Action[CA18104] ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC[ST/R000786/1] ; BIS National E-infrastructure capital grant[ST/J005673/1] ; STFC capital grant[ST/H008586/1] ; STFC DiRAC Operations grant[ST/K00333X/1] ; World Academy of Sciences ; Chinese Academy of Sciences
Funding OrganizationCOST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; COST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; COST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; COST Action ; COST Action ; Tertiary Education Scholarships Scheme (TESS, Malta) ; Tertiary Education Scholarships Scheme (TESS, Malta) ; STFC ; STFC ; BIS National E-infrastructure capital grant ; BIS National E-infrastructure capital grant ; STFC capital grant ; STFC capital grant ; STFC DiRAC Operations grant ; STFC DiRAC Operations grant ; World Academy of Sciences ; World Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000641987400101
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/77988
Collection中国科学院国家天文台
Corresponding AuthorFiteni, Karl
Affiliation1.Univ Malta, Inst Space Sci & Astron, MSD-2080 Msida, Malta
2.Univ Malta, Dept Phys, MSD-2080 Msida, Malta
3.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
5.Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England
Recommended Citation
GB/T 7714
Fiteni, Karl,Caruana, Joseph,Amarante, Joao A. S.,et al. The relative efficiencies of bars and clumps in driving disc stars to retrograde motion[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,503(1):1418-1430.
APA Fiteni, Karl,Caruana, Joseph,Amarante, Joao A. S.,Debattista, Victor P.,&Silva, Leandro Beraldo E..(2021).The relative efficiencies of bars and clumps in driving disc stars to retrograde motion.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,503(1),1418-1430.
MLA Fiteni, Karl,et al."The relative efficiencies of bars and clumps in driving disc stars to retrograde motion".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 503.1(2021):1418-1430.
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