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Dark-matter-deficient galaxies in hydrodynamical simulations

文献类型：期刊论文

作者Jing, Yingjie1,2; Wang, Chunxiang1,2; Li, Ran1,2; Liao, Shihong1; Wang, Jie1,2; Guo, Qi1,2; Gao, Liang1,2,3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2019-09-01
卷号488期号:3页码:3298-3307
ISSN号0035-8711
关键词methods: numerical galaxies: evolution dark matter
DOI10.1093/mnras/stz1839
英文摘要Low-mass galaxies are expected to be dark-matter-dominated even within their central regions. Recently, two observations reported two dwarf galaxies in a group environment with very little dark matter in their central regions. We explore the population and origins of dark matter -deficient galaxies (DMDGs) using two state-of-the-art hydrodynamical simulations, the EAGLE and Illustris projects. For all satellite galaxies with 10(9) < M-* < 10(10) M-circle dot in groups with M-200 > 10(13) M-circle dot, we find that about 2.6 per cent of them in EAGLE, and 1.5 per cent in Illustris are DMDGs with dark matter fractions below 50 per cent inside two times the half-stellar-mass radius. We demonstrate that DMDGs are highly tidally disrupted galaxies, and that because dark matter has a higher binding energy than stars, mass loss of the dark matter is much more rapid than that of stars in DMDGs during tidal interactions, If DMDGs were confirmed in observations, they are expected in current galaxy formation models.
WOS关键词ILLUSTRIS SIMULATION ; DWARF GALAXIES ; BLACK-HOLES ; EVOLUTION ; SATELLITE ; PROJECT ; HALOES ; CLUSTER
资助项目National Key Program for Science and Technology Research and Development of China[2017YFB0203300] ; National Key Program for Science and Technology Research and Development of China[2015CB857005] ; National Natural Science Foundation of China[11425312] ; National Natural Science Foundation of China[11503032] ; National Natural Science Foundation of China[11773032] ; National Natural Science Foundation of China[11390372] ; National Natural Science Foundation of China[11873051] ; National Natural Science Foundation of China[118513] ; National Natural Science Foundation of China[11573033] ; National Natural Science Foundation of China[11622325] ; NAOC Nebula Talents Program ; Newton Advanced Fellowship
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000485158400025
资助机构National Key Program for Science and Technology Research and Development of China ; National Key Program for Science and Technology Research and Development of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Newton Advanced Fellowship ; Newton Advanced Fellowship ; National Key Program for Science and Technology Research and Development of China ; National Key Program for Science and Technology Research and Development of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Newton Advanced Fellowship ; Newton Advanced Fellowship ; National Key Program for Science and Technology Research and Development of China ; National Key Program for Science and Technology Research and Development of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Newton Advanced Fellowship ; Newton Advanced Fellowship ; National Key Program for Science and Technology Research and Development of China ; National Key Program for Science and Technology Research and Development of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NAOC Nebula Talents Program ; NAOC Nebula Talents Program ; Newton Advanced Fellowship ; Newton Advanced Fellowship
源URL[http://ir.bao.ac.cn/handle/114a11/27785]  
专题中国科学院国家天文台
通讯作者Jing, Yingjie; Li, Ran
作者单位1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Univ Durham, Inst Computat Cosmol, Dept Phys, South Rd, Durham DH1 3LE, England
推荐引用方式
GB/T 7714		 Jing, Yingjie,Wang, Chunxiang,Li, Ran,et al. Dark-matter-deficient galaxies in hydrodynamical simulations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,488(3):3298-3307.
APA Jing, Yingjie.,Wang, Chunxiang.,Li, Ran.,Liao, Shihong.,Wang, Jie.,...&Gao, Liang.(2019).Dark-matter-deficient galaxies in hydrodynamical simulations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,488(3),3298-3307.
MLA Jing, Yingjie,et al."Dark-matter-deficient galaxies in hydrodynamical simulations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 488.3(2019):3298-3307.

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来源：国家天文台

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