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A discrete chemo-dynamical model of M87's globular clusters: Kinematics extending to similar to 400 kpc
Li, Chao1,2; Zhu, Ling3; Long, R. J.1,4,5,6; Mao, Shude1,4,5; Peng, Eric W.7,8; Sarzi, Marc9,10; van de Ven, Glenn11; Zhang, Hongxin12; Guo, Rui1,2; Xue, Xiangxiang1; Longobardi, Alessia13; Cote, Patrick14; Ferrarese, Laura14; Liu, Chengze15,16; Gwyn, Stephen14; Lim, Sungsoon8; Ko, Youkyung7,8,17
2020-02-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume492Issue:2Pages:2775-2795
AbstractWe study the mass distribution and kinematics of the giant elliptical galaxy M87 (NGC 4486) using discrete chemo-dynamical, axisymmetric Jeans equation modelling. Our catalogue comprises 894 globular clusters (GCs) extending to a projected radius of similar to 430 kpc with line-of-sight velocities and colours, and Multi Unit Spectroscopic Explorer integral field unit data within the central 2.4 kpc of the main galaxy. The gravitational potential for our models is a combination of a luminous matter potential with a varying mass-to-light ratio for the main galaxy, a supermassive black hole and a dark matter (DM) potential with a cusped or cored DM halo. The best-fitting models with either a cusped or a cored DM halo show no significant differences and both are acceptable. We obtain a total mass of (2.16 +/- 0.38) x 10(13) M-circle dot within similar to 400 kpc. By including the stellar mass-to-light ratio gradient, the DM fraction increases from similar to 26 per cent (with no gradient) to similar to 73 per cent within 1 R-e(maj) (major axis of half-light isophote, 14.2 kpc), and from similar to 84 per cent to similar to 94 per cent within 5 R-e(maj) (71.2 kpc). Red GCs have moderate rotation with V-max/sigma similar to 0.4, and blue GCs have weak rotation with V-max/sigma similar to 0.1. Red GCs have tangential velocity dispersion anisotropy, while blue GCs are consistent with being nearly isotropic. Our results suggest that red GCs are more likely to be born in situ, while blue GCs are more likely to be accreted.
Keywordgalaxies: individual: M87 galaxies: kinematics and dynamics
Funding OrganizationNational Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES
DOI10.1093/mnras/staa027
WOS KeywordEARLY-TYPE GALAXIES ; MULTI-GAUSSIAN EXPANSION ; ACS-VIRGO CLUSTER ; TO-LIGHT RATIO ; DARK-MATTER ; DYNAMICAL EVOLUTION ; ELLIPTIC GALAXIES ; MASS ; PROJECT ; ANISOTROPY
Language英语
Funding ProjectNational Key Basic Research and Development Program of China[2018YFA0404501] ; National Science Foundation of China[11821303] ; National Science Foundation of China[11333003] ; National Science Foundation of China[11390372] ; National Science Foundation of China[11761131004] ; Shanghai Astronomical Observatory, Chinese Academy of Sciences[Y895201009] ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme[724857] ; Centre National d'etudes Spatiales, CNES
Funding OrganizationNational Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; National Science Foundation of China ; National Science Foundation of China ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; Shanghai Astronomical Observatory, Chinese Academy of Sciences ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme ; Centre National d'etudes Spatiales, CNES ; Centre National d'etudes Spatiales, CNES
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000512297600091
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/54261
Collection中国科学院国家天文台
Corresponding AuthorLi, Chao; Zhu, Ling
Affiliation1.Chinese Acad Sci, Natl Astron Observ, A 20 Datun Rd, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
4.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
5.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China
6.Univ Manchester, Dept Phys & Astron, Jodrell Bank Ctr Astrophys, Oxford Rd, Manchester M13 9PL, Lancs, England
7.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
8.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
9.Armagh Observ & Planetarium, Coll Hill, Armagh BT61 9DG, North Ireland
10.Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL1 9AB, Herts, England
11.Univ Vienna, Dept Astrophys, Turkenschanzstr 17, A-1180 Vienna, Austria
12.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China
13.Aix Marseille Univ, CNRS, CNES, Lab Astrophys Marseille,UMR 7326, F-13388 Marseille, France
14.Natl Res Council Canada, Herzberg Astron & Astrophys Program, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada
15.Shanghai Jiao Tong Univ, Ctr Astron & Astrophys, Dept Phys & Astron, Shanghai 200240, Peoples R China
16.Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China
17.Seoul Natl Univ, Astron Program, Dept Phys & Astron, 1 Gwanak Ro, Seoul 08826, South Korea
Recommended Citation
GB/T 7714
Li, Chao,Zhu, Ling,Long, R. J.,et al. A discrete chemo-dynamical model of M87's globular clusters: Kinematics extending to similar to 400 kpc[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,492(2):2775-2795.
APA Li, Chao.,Zhu, Ling.,Long, R. J..,Mao, Shude.,Peng, Eric W..,...&Ko, Youkyung.(2020).A discrete chemo-dynamical model of M87's globular clusters: Kinematics extending to similar to 400 kpc.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,492(2),2775-2795.
MLA Li, Chao,et al."A discrete chemo-dynamical model of M87's globular clusters: Kinematics extending to similar to 400 kpc".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 492.2(2020):2775-2795.
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