SDSS-IV MaNGA: Environmental Dependence of the Mgb/< Fe >-sigma(*) Relation for Nearby Galaxies
文献类型：期刊论文
| 作者 | Zheng, Zheng2,3; Li, Cheng4,5; Mao, Shude2,4,5; Wang, Huiyuan6; Liu, Chao2; Mo, Houjun4,5,7; Yuan, Zhen8; Maraston, Claudia9; Thomas, Daniel9; Yan, Renbin10 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2019-03-01 |
| 卷号 | 873期号:1页码:15 |
| ISSN号 | 0004-637X |
| 关键词 | galaxies: abundances galaxies: evolution galaxies: general galaxies: statistics galaxies: stellar content galaxies: structure |
| DOI | 10.3847/1538-4357/ab03d2 |
| 英文摘要 | We use a sample of 3000 galaxies from the MaNGA MPL-7 internal data release to study the alpha abundance distribution within low-redshift galaxies. We use the Lick index ratio Mgb/< Fe > as an a abundance indicator to study relationships between the a abundance distribution and galaxy properties such as effective stellar velocity dispersion within 0.3 effective radii (a,), galaxy environment, and dark matter halo formation time (z(f)). We find that (1) all galaxies show a tight correlation between Mgb/< Fe > and sigma(*); (2) "old" (H beta) < 3) low-sigma(*) galaxies in high local density environment and inner regions within galaxy groups are enhanced in MgbAFe), while "young" (H beta) > 3) galaxies and high-mass galaxies show no or less environmental dependence; (3) "old" galaxies with high-z(f) show enhanced Mgb/< Fe > over low- and medium-z(f); and (4) Mgb/< Fe > gradients are close to zero and show dependence on sigma(*) but no obvious dependence on the environment or z(f). Our study indicates that stellar velocity dispersion or galaxy mass is the main parameter driving the MgbAFe) enhancement, although environments appear to have modest effects, particularly for low- and medium-mass galaxies. |
| 资助项目 | National Natural Science Foundation of China[11703036] ; National Key Basic Research and Development Program of China[2018YFA0404501] ; National Science Foundation of China[11333003] ; National Science Foundation of China[11390372] ; National Science Foundation of China[11761131004] ; National Science Foundation of China[11874057] ; NSFC[11733004] ; NSFC[11522324] ; NSFC[11421303] ; Science, Technology and Facilities Council through the Consolidated Grant Cosmology and Astrophysics at Portsmouth[ST/N000668/1] ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; Centre for High-Performance Computing at the University of Utah ; Brazilian Participation Group ; Carnegie Institution for Science ; Carnegie Mellon University ; Chilean Participation Group ; French Participation Group ; Harvard-Smithsonian Center for Astrophysics ; Instituto de Astrofisica de Canarias ; Johns Hopkins University ; Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo ; Lawrence Berkeley National Laboratory ; Leibniz Institut fur Astrophysik Potsdam (AIP) ; Max-Planck-Institut fur Astronomie (MPIA Heidelberg) ; Max-Planck-Institut fur Astrophysik (MPA Garching) ; Max-Planck-Institut fur Extraterrestrische Physik (MPE) ; National Astronomical Observatory of China ; New Mexico State University ; New York University ; University of Notre Dame ; Observatario Nacional/MCTI ; Ohio State University ; Pennsylvania State University ; Shanghai Astronomical Observatory ; United Kingdom Participation Group ; Universidad Nacional Autonoma de Mexico ; University of Arizona ; University of Colorado Boulder ; University of Oxford ; University of Portsmouth ; University of Utah ; University of Virginia ; University of Washington ; University of Wisconsin ; Vanderbilt University ; Yale University |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000460449000010 |
| 源URL | [http://119.78.226.72/handle/331011/31893]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Zheng, Zheng |
| 作者单位 | 1.Univ Calif Santa Cruz, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95064 USA 2.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China 3.Chinese Acad Sci, CAS Key Lab FAST, Beijing 100101, Peoples R China 4.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 5.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 6.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China 7.Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA 8.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 9.Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg,Burnaby Rd, Portsmouth PO1 3FX, Hants, England 10.Univ Kentucky, Lexington, KY 40506 USA |
| 推荐引用方式 GB/T 7714 | Zheng, Zheng,Li, Cheng,Mao, Shude,et al. SDSS-IV MaNGA: Environmental Dependence of the Mgb/< Fe >-sigma(*) Relation for Nearby Galaxies[J]. ASTROPHYSICAL JOURNAL,2019,873(1):15. |
| APA | Zheng, Zheng.,Li, Cheng.,Mao, Shude.,Wang, Huiyuan.,Liu, Chao.,...&Lacerna, Ivan.(2019).SDSS-IV MaNGA: Environmental Dependence of the Mgb/< Fe >-sigma(*) Relation for Nearby Galaxies.ASTROPHYSICAL JOURNAL,873(1),15. |
| MLA | Zheng, Zheng,et al."SDSS-IV MaNGA: Environmental Dependence of the Mgb/< Fe >-sigma(*) Relation for Nearby Galaxies".ASTROPHYSICAL JOURNAL 873.1(2019):15. |
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来源：上海天文台
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