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Mapping the dark matter halo of early-type galaxy NGC 2974 through orbit-based models with combined stellar and cold gas kinematics
Yang, Meng1; Zhu, Ling2; Weijmans, Anne-Marie1; van de Ven, Glenn3,4; Boardman, Nicholas5; Morganti, Raffaella6,7; Oosterloo, Tom6,7
2020
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume491Issue:3Pages:4221-4231
AbstractWe present an orbit-based method of combining stellar and cold gas kinematics to constrain the dark matter profile of early-type galaxies. We apply this method to early-type galaxy NGC 2974, using Pan-STARRS imaging and SAURON stellar kinematics tomodel the stellar orbits, and introducing HI kinematics from VLA observation as a tracer of the gravitational potential. The introduction of the cold gas kinematics shows a significant effect on the confidence limits of especially the dark halo properties: we exclude more than 95 per cent of models within the 1s confidence level of Schwarzschild modelling with only stellar kinematics, and reduce the relative uncertainty of the dark matter fraction significantly to 10 per cent within 5Re. Adopting a generalized Navarro-Frenk-White (NFW) dark matter profile, we measure a shallow cuspy inner slope of 0.6(-0.3)(+0.2) when including the cold gas kinematics in our model. We cannot constrain the inner slope with the stellar kinematics alone.
Keywordgalaxies: haloes galaxies: kinematics and dynamics galaxies: structure dark matter
Funding OrganizationChina Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation
DOI10.1093/mnras/stz3293
WOS KeywordTO-LIGHT RATIO ; MULTI-GAUSSIAN EXPANSION ; LARGE-SCALE STRUCTURE ; ELLIPTIC GALAXY ; ATLAS(3D) PROJECT ; SAURON PROJECT ; MASS ; DYNAMICS ; NGC-2974 ; SYSTEM
Language英语
Funding ProjectChina Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Shanghai Astronomical Observatory, Chinese Academy of Sciences[Y895201009] ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme[724857] ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate[NNX08AR22G] ; National Science Foundation[AST-1238877]
Funding OrganizationChina Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Scottish Universities Physics Alliance (SUPA) ; Scottish Universities Physics Alliance (SUPA) ; 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 ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Aeronautics and Space Administration through the Planetary Science Division of the NASA Science Mission Directorate ; National Science Foundation ; National Science Foundation
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000512306500082
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/54003
Collection中国科学院国家天文台
Corresponding AuthorYang, Meng
Affiliation1.Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
2.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
3.Univ Vienna, Dept Astrophys, TA 1-4 Rkenschanzstr 17, A-1180 Vienna, Austria
4.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany
5.Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA
6.Netherlands Inst Radio Astron ASTRON, Postbus 2, NL-7990 AA Dwingeloo, Netherlands
7.Univ Groningen, Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands
Recommended Citation
GB/T 7714
Yang, Meng,Zhu, Ling,Weijmans, Anne-Marie,et al. Mapping the dark matter halo of early-type galaxy NGC 2974 through orbit-based models with combined stellar and cold gas kinematics[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,491(3):4221-4231.
APA Yang, Meng.,Zhu, Ling.,Weijmans, Anne-Marie.,van de Ven, Glenn.,Boardman, Nicholas.,...&Oosterloo, Tom.(2020).Mapping the dark matter halo of early-type galaxy NGC 2974 through orbit-based models with combined stellar and cold gas kinematics.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,491(3),4221-4231.
MLA Yang, Meng,et al."Mapping the dark matter halo of early-type galaxy NGC 2974 through orbit-based models with combined stellar and cold gas kinematics".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 491.3(2020):4221-4231.
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