Interpreting the Star Formation-Extinction Relation with MaNGA
文献类型：期刊论文
| 作者 | Li, Huan3,4; Wuyts, Stijn5; Lei, Hao3; Lin, Lin3; Lam, Man I.3; Boquien, Mederic6; Andrews, Brett H.1; Schneider, Donald P.2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2019-02-10 |
| 卷号 | 872期号:1页码:15 |
| 关键词 | dust, extinction galaxies: evolution galaxies: ISM galaxies: star formation |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aafb6e |
| 英文摘要 | We investigate the resolved relation between local extinction and star formation surface density within nearby star-forming galaxies selected from the MaNGA survey. Balmer decrement measurements imply an extinction of the Ha line emission that scales approximately linearly with the logarithm of the star formation surface density: A(H alpha) = 0.46 log(Sigma(SFR)) + 1.53. Secondary dependencies are observed such that, at a given Sigma(SFR), regions of lower metallicity and/or enhanced H alpha equivalent width (EW) suffer less obscuration than regions of higher metallicity and/or lower H alpha EW. Spaxels lying above the mean relation also tend to belong to galaxies that are more massive, larger, and viewed under higher inclination than average. We present a simple model in which the observed trends can be accounted for by a metallicity-dependent scaling between Sigma(SFR) and Sigma(dust) via a superlinear Kennicutt-Schmidt relation (n(KS) similar to 1.47) and a dust-to-gas ratio that scales linearly with metallicity (DGR(Z(circle dot)) = 0.01). The relation between the resulting total dust column and observed effective extinction toward nebular regions requires a geometry for the relative distribution of H alpha-emitting regions and dust that deviates from a uniform foreground screen and also from an entirely homogeneous mixture of dust and emitting sources. The best-fit model features an H alpha EW and galactocentric-distance-dependent fraction of the dust mass in a clumpy foreground screen in front of a homogeneous mixture. |
| 资助项目 | National Science Foundation of China[U1831205] ; National Science Foundation of China[11603058] ; Chinese Academy of Sciences President's International Fellowship Initiative[2017VMB0011] ; Alfred P. Sloan Foundation ; U.S. Department of Energy Office of Science ; Center for High-Performance Computing at the University of Utah ; 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 |
| WOS记录号 | WOS:000458369900010 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://119.78.226.72/handle/331011/31967]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Li, Huan |
| 作者单位 | 1.Univ Pittsburgh, Dept Phys & Astron, PITT PACC, Pittsburgh, PA 15260 USA 2.Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA 3.Shanghai Astron Observ, Nandan Rd 80, Shanghai 200030, Peoples R China 4.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 5.Univ Bath, Dept Phys, Claverton Down, Bath BA2 7AY, Avon, England 6.Univ Antofagasta, Ctr Astron, Ave Angamos 601, Antofagasta 1270300, Chile |
| 推荐引用方式 GB/T 7714 | Li, Huan,Wuyts, Stijn,Lei, Hao,et al. Interpreting the Star Formation-Extinction Relation with MaNGA[J]. ASTROPHYSICAL JOURNAL,2019,872(1):15. |
| APA | Li, Huan.,Wuyts, Stijn.,Lei, Hao.,Lin, Lin.,Lam, Man I..,...&Schneider, Donald P..(2019).Interpreting the Star Formation-Extinction Relation with MaNGA.ASTROPHYSICAL JOURNAL,872(1),15. |
| MLA | Li, Huan,et al."Interpreting the Star Formation-Extinction Relation with MaNGA".ASTROPHYSICAL JOURNAL 872.1(2019):15. |
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来源：上海天文台
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