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Spatially-resolved stellar population properties of the M51-NGC 5195 system from multi-wavelength photometric data

文献类型：期刊论文

作者Wei, Peng1,2,3,4; Zou, Hu3,4; Lin, Lin5; Zhou, Xu3,4; Liu, Xiang1; Kong, Xu6; Ma, Lu1; Ma, Shu-Guo1,2
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2021
卷号21期号:1页码:6
ISSN号1674-4527
关键词galaxies: evolution galaxies: individual (M51) galaxies: photometry
DOI10.1088/1674-4527/21/1/6
产权排序1
英文摘要Using multi-band photometric images of M51 and its companion NGC 5195 from ultraviolet to optical and infrared, we investigate spatially resolved stellar population properties of this interacting system with stellar population synthesis models. The observed infrared excess (IRX) is used to constrain dust extinction. Stellar mass is also inferred from the model fitting. By fitting observed spectral energy distributions (SEDs) with synthetical ones, we derive two-dimensional distributions of stellar age, metallicity, dust extinction and stellar mass. In M51, two grand-designed spiral arms extending from the bulge show young age, rich metallicity and abundant dust. The inter-arm regions are filled with older, metal-poorer and less dusty stellar populations. Except for the spiral arm extending from M51 into NGC 5195, the stellar population properties of NGC 5195 are quite featureless. NGC 5195 is much older than M51, and its core is very dusty with A(V) up to 1.67 mag and dense in stellar mass surface density. The close encounters might drive the dust in the spiral arm of M51 into the center of NGC 5195.
资助项目Major Program of National Natural Science Foundation of China[11890691] ; National Basic Research Program of China (973 Program)[2017YFA0402600] ; National Natural Science Foundation of China (NSFC)[11433005] ; 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] ; External Cooperation Program of Chinese Academy of Sciences[114A11KYSB20160057] ; National Aeronautics and Space Administration ; National Science Foundation ; National Astronomical Observatories, Chinese Academy of Sciences (the Strategic Priority Research Program The Emergence of Cosmological Structures)[XDB09000000] ; Special Fund for Astronomy from the Ministry of Finance ; National Natural Science Foundation of China[11433005] ; NASA
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号WOS:000616017000001
资助机构Major Program of National Natural Science Foundation of China ; National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China (NSFC) ; External Cooperation Program of Chinese Academy of Sciences ; National Aeronautics and Space Administration ; National Science Foundation ; National Astronomical Observatories, Chinese Academy of Sciences (the Strategic Priority Research Program The Emergence of Cosmological Structures) ; Special Fund for Astronomy from the Ministry of Finance ; National Natural Science Foundation of China ; NASA
源URL[http://ir.xao.ac.cn/handle/45760611-7/3886]  
专题星系宇宙学研究团组
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, Beijing 100012, Peoples R China
5.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
6.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Peng,Zou, Hu,Lin, Lin,et al. Spatially-resolved stellar population properties of the M51-NGC 5195 system from multi-wavelength photometric data[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(1):6.
APA Wei, Peng.,Zou, Hu.,Lin, Lin.,Zhou, Xu.,Liu, Xiang.,...&Ma, Shu-Guo.(2021).Spatially-resolved stellar population properties of the M51-NGC 5195 system from multi-wavelength photometric data.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(1),6.
MLA Wei, Peng,et al."Spatially-resolved stellar population properties of the M51-NGC 5195 system from multi-wavelength photometric data".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.1(2021):6.

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