Nature of a shell of young stars in the outskirts of the Small Magellanic Cloud
文献类型：期刊论文
| 作者 | Martinez-Delgado, David1; Katherina Vivas, Anna2; Grebel, Eva K.1; Gallart, Carme3,4; Pieres, Adriano5,6; Bell, Cameron P. M.7; Zivick, Paul8; Lemasle, Bertrand1; Johnson, Lent Clifton9,10; Carballo-Bello, Julio A.11,12 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2019-10-29 |
| 卷号 | 631页码:16 |
| ISSN号 | 0004-6361 |
| 关键词 | galaxies: dwarf Magellanic Clouds galaxies: structure Local Group galaxies: interactions |
| DOI | 10.1051/0004-6361/201936021 |
| 英文摘要 | Context. Understanding the evolutionary history of the Magellanic Clouds requires an in-depth exploration and characterization of the stellar content in their outer regions, which ultimately are key to tracing the epochs and nature of past interactions. Aims. We present new deep images of a shell-like overdensity of stars in the outskirts of the Small Magellanic Cloud (SMC). The shell, also detected in photographic plates dating back to the fifties, is located at similar to 1.9 degrees from the center of the SMC in the north-east direction. Methods. The structure and stellar content of this feature were studied with multiband, optical data from the Survey of the MAgellanic Stellar History (SMASH) carried out with the Dark Energy Camera on the Blanco Telescope at Cerro Tololo Inter-American Observatory. We also investigate the kinematic of the stars in the shell using the Gaia Data Release 2. Results. The shell is composed of a young population with an age similar to 150 Myr, with no contribution from an old population. Thus, it is hard to explain its origin as the remnant of a tidally disrupted stellar system. The spatial distribution of the young main-sequence stars shows a rich sub-structure, with a spiral arm-like feature emanating from the main shell and a separated small arc of young stars close to the globular cluster NGC 362. We find that the absolute g-band magnitude of the shell is M-g,M-shell =-10.78 +/- 0.02, with a surface brightness of mu(g,shell) = 25.81 +/- 0.01 mag arcsec(-2). Conclusion. We have not found any evidence that this feature is of tidal origin or a bright part of a spiral arm-like structure. Instead, we suggest that the shell formed in a recent star formation event, likely triggered by an interaction with the Large Magellanic Cloud and or the Milky Way, similar to 150 Myr ago. |
| WOS关键词 | VMC SURVEY ; STELLAR POPULATIONS ; FORMATION HISTORY ; DWARF GALAXIES ; PROPER MOTION ; EVOLUTION ; STREAM ; MODELS ; KINEMATICS ; DISCOVERY |
| 资助项目 | MilkyWay System" of the German Research Foundation (DFG)[Sonderforschungsbereich (SFB) 881] ; Spanish MINECO[AYA2016-81065-C22] ; Dark Energy Camera (DECam) ; MRC ; European Research Council (ERC) under the European Union[682115] ; Australian Research Council ; European Research Council[DP150100862] ; Spanish MINECO grant[ERC StG-335936] ; Spanish Ministry of Economy and Competitiveness (MINECO)[AYA2016-81065-C22-P] ; ADAP grant[AYA2014-56795-P] ; project BASAL[NNX14AF81G] ; NSF[AFB-170002] ; Association of Universities for Research in Astronomy (AURA)[AST 1655677] ; National Science Foundation ; U.S. Department of Energy ; U.S. National Science Foundation ; Ministry of Science and Education of Spain ; Science and Technology Facilities Council of the United Kingdom ; Higher Education Funding Council for England ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Financiadora de Estudos e Projetos ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Deutsche Forschungsgemeinschaft ; Collaborating Institutions in the Dark Energy Survey |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000515093800001 |
| 资助机构 | MilkyWay System" of the German Research Foundation (DFG) ; MilkyWay System" of the German Research Foundation (DFG) ; Spanish MINECO ; Spanish MINECO ; Dark Energy Camera (DECam) ; Dark Energy Camera (DECam) ; MRC ; MRC ; European Research Council (ERC) under the European Union ; European Research Council (ERC) under the European Union ; Australian Research Council ; Australian Research Council ; European Research Council ; European Research Council ; Spanish MINECO grant ; Spanish MINECO grant ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; ADAP grant ; ADAP grant ; project BASAL ; project BASAL ; NSF ; NSF ; Association of Universities for Research in Astronomy (AURA) ; Association of Universities for Research in Astronomy (AURA) ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. National Science Foundation ; U.S. National Science Foundation ; Ministry of Science and Education of Spain ; Ministry of Science and Education of Spain ; Science and Technology Facilities Council of the United Kingdom ; Science and Technology Facilities Council of the United Kingdom ; Higher Education Funding Council for England ; Higher Education Funding Council for England ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Financiadora de Estudos e Projetos ; Financiadora de Estudos e Projetos ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Collaborating Institutions in the Dark Energy Survey ; Collaborating Institutions in the Dark Energy Survey ; MilkyWay System" of the German Research Foundation (DFG) ; MilkyWay System" of the German Research Foundation (DFG) ; Spanish MINECO ; Spanish MINECO ; Dark Energy Camera (DECam) ; Dark Energy Camera (DECam) ; MRC ; MRC ; European Research Council (ERC) under the European Union ; European Research Council (ERC) under the European Union ; Australian Research Council ; Australian Research Council ; European Research Council ; European Research Council ; Spanish MINECO grant ; Spanish MINECO grant ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; ADAP grant ; ADAP grant ; project BASAL ; project BASAL ; NSF ; NSF ; Association of Universities for Research in Astronomy (AURA) ; Association of Universities for Research in Astronomy (AURA) ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. National Science Foundation ; U.S. National Science Foundation ; Ministry of Science and Education of Spain ; Ministry of Science and Education of Spain ; Science and Technology Facilities Council of the United Kingdom ; Science and Technology Facilities Council of the United Kingdom ; Higher Education Funding Council for England ; Higher Education Funding Council for England ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Financiadora de Estudos e Projetos ; Financiadora de Estudos e Projetos ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Collaborating Institutions in the Dark Energy Survey ; Collaborating Institutions in the Dark Energy Survey ; MilkyWay System" of the German Research Foundation (DFG) ; MilkyWay System" of the German Research Foundation (DFG) ; Spanish MINECO ; Spanish MINECO ; Dark Energy Camera (DECam) ; Dark Energy Camera (DECam) ; MRC ; MRC ; European Research Council (ERC) under the European Union ; European Research Council (ERC) under the European Union ; Australian Research Council ; Australian Research Council ; European Research Council ; European Research Council ; Spanish MINECO grant ; Spanish MINECO grant ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; ADAP grant ; ADAP grant ; project BASAL ; project BASAL ; NSF ; NSF ; Association of Universities for Research in Astronomy (AURA) ; Association of Universities for Research in Astronomy (AURA) ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. National Science Foundation ; U.S. National Science Foundation ; Ministry of Science and Education of Spain ; Ministry of Science and Education of Spain ; Science and Technology Facilities Council of the United Kingdom ; Science and Technology Facilities Council of the United Kingdom ; Higher Education Funding Council for England ; Higher Education Funding Council for England ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Financiadora de Estudos e Projetos ; Financiadora de Estudos e Projetos ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Collaborating Institutions in the Dark Energy Survey ; Collaborating Institutions in the Dark Energy Survey ; MilkyWay System" of the German Research Foundation (DFG) ; MilkyWay System" of the German Research Foundation (DFG) ; Spanish MINECO ; Spanish MINECO ; Dark Energy Camera (DECam) ; Dark Energy Camera (DECam) ; MRC ; MRC ; European Research Council (ERC) under the European Union ; European Research Council (ERC) under the European Union ; Australian Research Council ; Australian Research Council ; European Research Council ; European Research Council ; Spanish MINECO grant ; Spanish MINECO grant ; Spanish Ministry of Economy and Competitiveness (MINECO) ; Spanish Ministry of Economy and Competitiveness (MINECO) ; ADAP grant ; ADAP grant ; project BASAL ; project BASAL ; NSF ; NSF ; Association of Universities for Research in Astronomy (AURA) ; Association of Universities for Research in Astronomy (AURA) ; National Science Foundation ; National Science Foundation ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. National Science Foundation ; U.S. National Science Foundation ; Ministry of Science and Education of Spain ; Ministry of Science and Education of Spain ; Science and Technology Facilities Council of the United Kingdom ; Science and Technology Facilities Council of the United Kingdom ; Higher Education Funding Council for England ; Higher Education Funding Council for England ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Center for Cosmology and Astro-Particle Physics at the Ohio State University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Mitchell Institute for Fundamental Physics and Astronomy at Texas AM University ; Financiadora de Estudos e Projetos ; Financiadora de Estudos e Projetos ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico ; Deutsche Forschungsgemeinschaft ; Deutsche Forschungsgemeinschaft ; Collaborating Institutions in the Dark Energy Survey ; Collaborating Institutions in the Dark Energy Survey |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54534]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Martinez-Delgado, David |
| 作者单位 | 1.Heidelberg Univ, Astronom Rechen Inst, Zentrum Astron, Monchhofstr 12-14, D-69120 Heidelberg 69120, Germany 2.Natl Opt Astron Observ, Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile 3.Inst Astrofis Canarias, Calle Via Lactea S-N, Tenerife 38205, Spain 4.Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain 5.Lab Interinst & Astron LIneA, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, Brazil 6.Observ Nacl, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, Brazil 7.Leibniz Inst Astrophys Potsdam, Sternwarte 16, D-1442 Potsdam, Germany 8.Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA 9.Northwestern Univ, CIERA, 2145 Sheridan Rd, Evanston, IL 60208 USA 10.Northwestern Univ, Dept Phys & Astron, 2145 Sheridan Rd, Evanston, IL 60208 USA |
| 推荐引用方式 GB/T 7714 | Martinez-Delgado, David,Katherina Vivas, Anna,Grebel, Eva K.,et al. Nature of a shell of young stars in the outskirts of the Small Magellanic Cloud[J]. ASTRONOMY & ASTROPHYSICS,2019,631:16. |
| APA | Martinez-Delgado, David.,Katherina Vivas, Anna.,Grebel, Eva K..,Gallart, Carme.,Pieres, Adriano.,...&Munoz, Ricardo R..(2019).Nature of a shell of young stars in the outskirts of the Small Magellanic Cloud.ASTRONOMY & ASTROPHYSICS,631,16. |
| MLA | Martinez-Delgado, David,et al."Nature of a shell of young stars in the outskirts of the Small Magellanic Cloud".ASTRONOMY & ASTROPHYSICS 631(2019):16. |
入库方式： OAI收割
来源：国家天文台
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