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Physical Properties of H II Regions in M51 from Spectroscopic Observations

文献类型：期刊论文

作者Wei, Peng1,2,3; Zou, Hu3,4; Kong, Xu5; Zhou, Xu3,4,5; Hu, Ning6; Lin, Zesen5,6; Mao, Yewei5,7; Lin, Lin8; Zhou, Zhimin3; Liu, Xiang1
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
出版日期2020-09-01
卷号132期号:1015页码:094101
ISSN号0004-6280
关键词Galaxy abundances Galaxy evolution H II regions Interstellar dust extinction Interstellar medium Star formation
DOI10.1088/1538-3873/ab9d92
产权排序1
英文摘要M51 and NGC 5195 is an interacting system that can be explored in great details with ground-based telescopes. The Hiiregions in M51 were observed using the 2.16 m telescope of the National Astronomical Observatories of the Chinese Academy of Sciences and the 6.5 m Multiple Mirror Telescope with spatial resolution of less than similar to 100 pc. We obtain a total of 113 spectra across the galaxy and combine the literature data of Croxall et al. to derive a series of physical properties, including the gas-phase extinction, stellar population age, star formation rate (SFR) surface density, and oxygen abundance. The spatial distributions and radial profiles of these properties are investigated in order to study the characteristics of M51 and the clues to the formation and evolution of this galaxy. M51 presents a mild radial extinction gradient. The lower gas-phase extinction in the north spiral arms compared to the south arms are possibly caused by the past encounters with the companion galaxy of NGC 5195. A number of Hiiregions have the stellar age between 50 and 500 Myr, consistent with the recent interaction history by simulations in the literatures. The SFR surface density presents a mild radial gradient, which is ubiquitous in spiral galaxies. There is a negative metallicity gradient of -0.08 dexRe-1
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WOS关键词SDSS-IV MANGA ; STAR-FORMING GALAXIES ; OXYGEN ABUNDANCE ; HII-REGIONS ; METALLICITY GRADIENTS ; NEARBY GALAXIES ; GAS ; EMISSION ; STELLAR ; PSEUDOBULGES
资助项目Xinjiang Natural Science Foundation[2020D01B59] ; Major Program of National Natural Science Foundation of China[11890691] ; National Key R&D Program of China (973 Program)[2017YFA0402600] ; National Natural Science Foundation of China (NSFC)[11673027] ; National Natural Science Foundation of China (NSFC)[11733007] ; National Natural Science Foundation of China (NSFC)[11973038] ; National Natural Science Foundation of China (NSFC)[11320101002] ; National Natural Science Foundation of China (NSFC)[11421303] ; National Natural Science Foundation of China (NSFC)[11890693] ; External Cooperation Program of Chinese Academy of Sciences[114A11KYSB20160057] ; National Astronomical Observatories of China ; Chinese Academy of Sciences (the Strategic Priority Research Program, The Emergence of Cosmological Structures)[XDB09000000] ; Special Fund for Astronomy from the Ministry of Finance
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000560654700001
资助机构Xinjiang Natural Science Foundation ; Major Program of National Natural Science Foundation of China ; National Key R&D Program of China (973 Program) ; National Natural Science Foundation of China (NSFC) ; External Cooperation Program of Chinese Academy of Sciences ; National Astronomical Observatories of China ; Chinese Academy of Sciences (the Strategic Priority Research Program, The Emergence of Cosmological Structures) ; Special Fund for Astronomy from the Ministry of Finance
源URL[http://ir.xao.ac.cn/handle/45760611-7/3617]  
专题星系宇宙学研究团组
新疆天文台_应用天文研究室
通讯作者Wei, Peng; Zou, Hu
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
5.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China
6.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
7.GuangZhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China
8.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Peng,Zou, Hu,Kong, Xu,et al. Physical Properties of H II Regions in M51 from Spectroscopic Observations[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2020,132(1015):094101.
APA Wei, Peng.,Zou, Hu.,Kong, Xu.,Zhou, Xu.,Hu, Ning.,...&Lin, Xinkui.(2020).Physical Properties of H II Regions in M51 from Spectroscopic Observations.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,132(1015),094101.
MLA Wei, Peng,et al."Physical Properties of H II Regions in M51 from Spectroscopic Observations".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 132.1015(2020):094101.

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来源：新疆天文台

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