The dynamical origin of multiple populations in intermediate-age clusters in the Magellanic Clouds

doi:10.1093/mnras/stx1954

	The dynamical origin of multiple populations in intermediate-age clusters in the Magellanic Clouds
	Deng, Licai7 ; Wang, Long 8; Li, Chengyuan 9; Askar, Abbas 1; Hong, Jongsuk 3; de Grijs, Richard 2,3,4; Berczik, Peter10,11 ; Spurzem, Rainer3,5,10 ; Giersz, Mirek 1; Kouwenhoven, M. B. N.6
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2017-11-01
卷号	472 期号:1 页码:67-77
关键词	Stars: Kinematics And Dynamics Magellanic Clouds Galaxies: Star Clusters: Individual: Ngc 411 Galaxies: Star Clusters: Individual: Ngc 1806
DOI	10.1093/mnras/stx1954
文献子类	Article
英文摘要	Numerical simulations were carried out to study the origin of multiple stellar populations in the intermediate-age clusters NGC 411 and NGC 1806 in the Magellanic Clouds. We performed NBODY6++ simulations based on two different formation scenarios, an ad hoc formation model where second-generation (SG) stars are formed inside a cluster of first-generation (FG) stars using the gas accumulated from the external intergalactic medium and a minor merger model of unequal mass (M-SG/M-FG similar to 5-10 per cent) clusters with an age difference of a few hundred million years. We compared our results such as the radial profile of the SG-to-FG number ratio with observations on the assumption that the SG stars in the observations are composed of cluster members, and confirmed that both the ad hoc formation and merger scenarios reproduce the observed radial trend of the SG-to-FG number ratio, which shows less centrally concentrated SG than FG stars. It is difficult to constrain the formation scenario for the multiple populations by only using the spatial distribution of the SG stars. SG stars originating from the merger scenario show a significant velocity anisotropy and rotational features compared to those from the ad hoc formation scenario. Thus, observations aimed at kinematic properties like velocity anisotropy or rotational velocities for SG stars should be obtained to better understand the formation of the multiple populations in these clusters. This is, however, beyond current instrumentation capabilities.
WOS关键词	GALACTIC GLOBULAR-CLUSTERS ; N-BODY SIMULATIONS ; STELLAR POPULATIONS ; STAR-CLUSTERS ; OMEGA-CENTAURI ; TRIPLET SPECTROSCOPY ; MAIN-SEQUENCE ; RED GIANTS ; ACS SURVEY ; MASS
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000413765800007
资助机构	China Postdoctoral Science Foundation(2017M610694) ; China Postdoctoral Science Foundation(2017M610694) ; National Natural Science Foundation of China (NSFC)(U1631102 ; National Natural Science Foundation of China (NSFC)(U1631102 ; Polish National Science Centre(UMO-2015/17/N/ST9/02573) ; Polish National Science Centre(UMO-2015/17/N/ST9/02573) ; National Academy of Science of Ukraine under the Main Astronomical Observatory GRID/GPU computing cluster project ; National Academy of Science of Ukraine under the Main Astronomical Observatory GRID/GPU computing cluster project ; Macquarie Research Fellowship Scheme ; Macquarie Research Fellowship Scheme ; NSFC(11010237 ; NSFC(11010237 ; Research Development Fund of Xi'an Jiaotong-Liverpool University (XJTLU)(RDF-16-01-16) ; Research Development Fund of Xi'an Jiaotong-Liverpool University (XJTLU)(RDF-16-01-16) ; National Science Centre Poland(UMO-2016/23/B/ST9/02732) ; National Science Centre Poland(UMO-2016/23/B/ST9/02732) ; Alexander-von-Humboldt Polish Honorary Research Fellowship of the Foundation for Polish Science ; Alexander-von-Humboldt Polish Honorary Research Fellowship of the Foundation for Polish Science ; Chinese Academy of Sciences (NAOC), through the Chinese Academy of Sciences Visiting Professorship for Senior International Scientists(2009S1-5 (RS)) ; Chinese Academy of Sciences (NAOC), through the Chinese Academy of Sciences Visiting Professorship for Senior International Scientists(2009S1-5 (RS)) ; 'Qianren' special foreign experts programme of China ; 'Qianren' special foreign experts programme of China ; Ministry of Finance of People's Republic of China(ZDYZ2008-2) ; Ministry of Finance of People's Republic of China(ZDYZ2008-2) ; Strategic Priority Research Program (Pilot B) 'Multiwavelength gravitational wave universe' of the Chinese Academy of Sciences(XDB23040100) ; Strategic Priority Research Program (Pilot B) 'Multiwavelength gravitational wave universe' of the Chinese Academy of Sciences(XDB23040100) ; Chinese Academy of Sciences through the Silk Road Project at the National Astronomical Observatories ; Chinese Academy of Sciences through the Silk Road Project at the National Astronomical Observatories ; 11373010 ; 11373010 ; 11050110414 ; 11050110414 ; 11633005) ; 11633005) ; 11173004 ; 11173004 ; 11573004 ; 11573004 ; 11673032) ; 11673032) ; China Postdoctoral Science Foundation(2017M610694) ; China Postdoctoral Science Foundation(2017M610694) ; National Natural Science Foundation of China (NSFC)(U1631102 ; National Natural Science Foundation of China (NSFC)(U1631102 ; Polish National Science Centre(UMO-2015/17/N/ST9/02573) ; Polish National Science Centre(UMO-2015/17/N/ST9/02573) ; National Academy of Science of Ukraine under the Main Astronomical Observatory GRID/GPU computing cluster project ; National Academy of Science of Ukraine under the Main Astronomical Observatory GRID/GPU computing cluster project ; Macquarie Research Fellowship Scheme ; Macquarie Research Fellowship Scheme ; NSFC(11010237 ; NSFC(11010237 ; Research Development Fund of Xi'an Jiaotong-Liverpool University (XJTLU)(RDF-16-01-16) ; Research Development Fund of Xi'an Jiaotong-Liverpool University (XJTLU)(RDF-16-01-16) ; National Science Centre Poland(UMO-2016/23/B/ST9/02732) ; National Science Centre Poland(UMO-2016/23/B/ST9/02732) ; Alexander-von-Humboldt Polish Honorary Research Fellowship of the Foundation for Polish Science ; Alexander-von-Humboldt Polish Honorary Research Fellowship of the Foundation for Polish Science ; Chinese Academy of Sciences (NAOC), through the Chinese Academy of Sciences Visiting Professorship for Senior International Scientists(2009S1-5 (RS)) ; Chinese Academy of Sciences (NAOC), through the Chinese Academy of Sciences Visiting Professorship for Senior International Scientists(2009S1-5 (RS)) ; 'Qianren' special foreign experts programme of China ; 'Qianren' special foreign experts programme of China ; Ministry of Finance of People's Republic of China(ZDYZ2008-2) ; Ministry of Finance of People's Republic of China(ZDYZ2008-2) ; Strategic Priority Research Program (Pilot B) 'Multiwavelength gravitational wave universe' of the Chinese Academy of Sciences(XDB23040100) ; Strategic Priority Research Program (Pilot B) 'Multiwavelength gravitational wave universe' of the Chinese Academy of Sciences(XDB23040100) ; Chinese Academy of Sciences through the Silk Road Project at the National Astronomical Observatories ; Chinese Academy of Sciences through the Silk Road Project at the National Astronomical Observatories ; 11373010 ; 11373010 ; 11050110414 ; 11050110414 ; 11633005) ; 11633005) ; 11173004 ; 11173004 ; 11573004 ; 11573004 ; 11673032) ; 11673032)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20196]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Polish Acad Sci, Nicolaus Copernicus Astron Ctr, Ul Bartycka 18, PL-00716 Warsaw, Poland 2.Int Space Sci Inst Beijing, 1 Nanertiao, Beijing 100190, Peoples R China 3.Peking Univ, Kavli Inst Astron & Astrophys, Yi He Yuan Lu 5, Beijing 100871, Peoples R China 4.Peking Univ, Sch Phys, Dept Astron, Yi He Yuan Lu 5, Beijing 100871, Peoples R China 5.Heidelberg Univ, Zentrum Astron, Astron Rechen Inst, Monchhofstr 12-14, D-69120 Heidelberg, Germany 6.Xian Jiaotong Liverpool Univ, Dept Math Sci, Suzhou Dushu Lake Sci & Educ Innovat Dist, 111 Renai Rd,Suzhou Ind Pk, Suzhou 215123, Peoples R China 7.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 8.RIKEN Adv Inst Computat Sci, Chuo Ku, 7-1-26 Minatojima Minami Machi, Kobe, Hyogo 6500047, Japan 9.Macquarie Univ, Dept Phys & Astron, Sydney, NSW 2109, Australia 10.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Deng, Licai,Wang, Long,Li, Chengyuan,et al. The dynamical origin of multiple populations in intermediate-age clusters in the Magellanic Clouds[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,472(1):67-77.
APA	Deng, Licai.,Wang, Long.,Li, Chengyuan.,Askar, Abbas.,Hong, Jongsuk.,...&Kouwenhoven, M. B. N..(2017).The dynamical origin of multiple populations in intermediate-age clusters in the Magellanic Clouds.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,472(1),67-77.
MLA	Deng, Licai,et al."The dynamical origin of multiple populations in intermediate-age clusters in the Magellanic Clouds".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 472.1(2017):67-77.