The Spin Alignment of Galaxies with the Large-scale Tidal Field in Hydrodynamic Simulations
文献类型:期刊论文
作者 | Wang, Peng1,2; Guo, Quan3; Kang, Xi1; Libeskind, Noam, I4 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2018-10-20 |
卷号 | 866期号:2页码:6 |
ISSN号 | 0004-637X |
关键词 | galaxies: evolution galaxies: general large-scale structure of universe methods: observational methods: statistical |
DOI | 10.3847/1538-4357/aae20f |
英文摘要 | The correlation between the spins of dark matter halos and the large-scale structure (LSS) has been studied in great detail over a large redshift range, while investigations of galaxies are still incomplete. Motivated by this point, we use the state-of-the-art hydrodynamic simulation, Illustris-1, to investigate mainly the spin-LSS correlation of galaxies at a redshift of z = 0. We mainly find that the spins of low-mass, blue, oblate galaxies are preferentially aligned with the slowest collapsing direction (e(3)) of the large-scale tidal field, while massive, red, prolate galaxy spins tend to be perpendicular to e(3). The transition from a parallel to a perpendicular trend occurs at similar to 10(9.4) h(-1) M-circle dot in the stellar mass, similar to 0.62 in the g-r color, and similar to 0.4 in triaxiality. The transition stellar mass decreases with increasing redshifts. The alignment was found to be primarily correlated with the galaxy stellar mass. Our results are consistent with previous studies both in N-body simulations and observations. Our study also fills the vacancy in the study of the galaxy spin-LSS correlation at z = 0 using hydrodynamical simulations and also provides important insight to understand the formation and evolution of galaxy angular momentum. |
WOS关键词 | DARK-MATTER HALOES ; COSMIC WEB ; ANGULAR-MOMENTUM ; FILAMENTS ; ORIENTATION ; EVOLUTION ; UNIVERSE ; ORIGIN |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000448201700003 |
源URL | [http://libir.pmo.ac.cn/handle/332002/21220] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Wang, Peng |
作者单位 | 1.PMO, 8 Yuan Hua Rd, Nanjing 210034, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Grad Sch, 19A,Yuquan Rd, Beijing 100049, Peoples R China 3.Shanghai Astron Observ SHAO, Nandan Rd 80, Shanghai 20030, Peoples R China 4.Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany |
推荐引用方式 GB/T 7714 | Wang, Peng,Guo, Quan,Kang, Xi,et al. The Spin Alignment of Galaxies with the Large-scale Tidal Field in Hydrodynamic Simulations[J]. ASTROPHYSICAL JOURNAL,2018,866(2):6. |
APA | Wang, Peng,Guo, Quan,Kang, Xi,&Libeskind, Noam, I.(2018).The Spin Alignment of Galaxies with the Large-scale Tidal Field in Hydrodynamic Simulations.ASTROPHYSICAL JOURNAL,866(2),6. |
MLA | Wang, Peng,et al."The Spin Alignment of Galaxies with the Large-scale Tidal Field in Hydrodynamic Simulations".ASTROPHYSICAL JOURNAL 866.2(2018):6. |
入库方式: OAI收割
来源:紫金山天文台
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