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SDSS-IV MaNGA: Variation of the Stellar Initial Mass Function in Spiral and Early-type Galaxies
文献类型：期刊论文
| 作者 | Li, Hongyu1,2; Ge, Junqiang1 ; Mao, Shude1,3,4,5; Cappellari, Michele6; Long, R. J.1,5; Li, Ran1,7; Emsellem, Eric8,9,10; Dutton, Aaron A.11; Li, Cheng3,4,12; Bundy, Kevin13
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2017-04-01 |
| 卷号 | 838期号:2 |
| 关键词 | dark matter galaxies: evolution galaxies: formation galaxies: kinematics and dynamics galaxies: structure |
| 英文摘要 | We perform Jeans anisotropic modeling (JAM) on elliptical and spiral galaxies from the MaNGA DR13 sample. By comparing the stellar mass-to-light ratios estimated from stellar population synthesis and from JAM, we find a. systematic variation of the initial mass function (IMF) similar to that. in the earlier ATLAS(3D) results. Early-type galaxies (elliptical and lenticular) with lower velocity dispersions within one effective radius are consistent with a Chabrier-like IMF, while galaxies with higher velocity dispersions are consistent with a more bottom-heavy IMF such as the Salpeter IMF. Spiral galaxies have similar systematic IMF variations, but with slightly different slopes and larger scatters, due to the uncertainties caused by the. higher gas fractions and extinctions for these galaxies. Furthermore, we examine the effects of stellar mass-to-light ratio gradients on our JAM modeling, and we. find that the trends become. stronger after considering the gradients. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | TO-LIGHT RATIO ; DIGITAL-SKY-SURVEY ; MULTI-GAUSSIAN EXPANSION ; STAR-FORMING GALAXIES ; 2.5 M TELESCOPE ; DARK-MATTER ; FUNDAMENTAL PLANE ; POPULATION SYNTHESIS ; ATLAS(3D) PROJECT ; DYNAMICAL MODELS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000398118500001 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8232]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 4.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 5.Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Oxford Rd, Manchester M13 9PL, Lancs, England 6.Univ Oxford, Subdept Astrophys, Dept Phys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England 7.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China 8.Univ Lyon 1, Ctr Rech Astrophys Lyon, Observ Lyon, 9 Ave Charles Andre, F-69230 St Genis Laval, France 9.Univ Lyon 1, Ecole Normale Super Lyon, 9 Ave Charles Andre, F-69230 St Genis Laval, France 10.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany |
| 推荐引用方式 GB/T 7714 | Li, Hongyu,Ge, Junqiang,Mao, Shude,et al. SDSS-IV MaNGA: Variation of the Stellar Initial Mass Function in Spiral and Early-type Galaxies[J]. ASTROPHYSICAL JOURNAL,2017,838(2). |
| APA | Li, Hongyu.,Ge, Junqiang.,Mao, Shude.,Cappellari, Michele.,Long, R. J..,...&Ge,Junqiang.(2017).SDSS-IV MaNGA: Variation of the Stellar Initial Mass Function in Spiral and Early-type Galaxies.ASTROPHYSICAL JOURNAL,838(2). |
| MLA | Li, Hongyu,et al."SDSS-IV MaNGA: Variation of the Stellar Initial Mass Function in Spiral and Early-type Galaxies".ASTROPHYSICAL JOURNAL 838.2(2017). |
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来源：国家天文台
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