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An Accurate Analytic Mass Model for Lensing Galaxies

文献类型：期刊论文

作者Du, Wei2; Zhao, Gong-Bo2,3; Fan, Zuhui4,5; Shu, Yiping6; Li, Ran2; Mao, Shude1,2
刊名ASTROPHYSICAL JOURNAL
出版日期2020-03-20
卷号892期号:1页码:22
关键词Strong gravitational lensing Dark matter Cosmology Galaxy dynamics Galaxy dark matter halos Gravitational lensing Galaxy mass distribution
ISSN号0004-637X
DOI10.3847/1538-4357/ab7a15
英文摘要We develop an analytic mass model for lensing galaxies, based on a broken power-law density profile, which is a power-law profile with a mass deficit or surplus in the central region. Under the assumption of an elliptically symmetric surface mass distribution, the deflection angle and magnification can be evaluated analytically for this new model. We compute the theoretical prediction for various quantities, including the volume and surface mass density profiles of the galaxies, and the aperture and luminosity-weighted line-of-sight velocity dispersions, and compare them to those measured from the Illustris simulation. We find an excellent agreement between our model prediction and the simulation, which validates our modeling. The high efficiency and accuracy of our model manifests itself as a promising tool for studying properties of galaxies with strong lensing.
WOS关键词UNIVERSAL DENSITY PROFILE ; ELLIPTIC GALAXIES ; ACS SURVEY ; ILLUSTRIS PROJECT ; DARK ; MATTER ; EVOLUTION ; STELLAR ; FAMILY ; DISTRIBUTIONS
资助项目National Natural Science Foundation of China (NSFC)[11803043] ; National Natural Science Foundation of China (NSFC)[11890691] ; National Key Basic Research and Development Program of China[2018YFA0404503] ; National Key Basic Research and Development Program of China[2018YFA0404501] ; NSFC[11925303] ; NSFC[11720101004] ; NSFC[11673025] ; NSFC[11333001] ; NSFC[11933002] ; NSFC[11821303] ; NSFC[11761131004] ; NSFC[11761141012] ; CAS Interdisciplinary Innovation Team ; Royal Society-K.C. Wong International Fellowship[NF170995]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000523658200001
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Royal Society-K.C. Wong International Fellowship ; Royal Society-K.C. Wong International Fellowship ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Royal Society-K.C. Wong International Fellowship ; Royal Society-K.C. Wong International Fellowship ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Royal Society-K.C. Wong International Fellowship ; Royal Society-K.C. Wong International Fellowship ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; Royal Society-K.C. Wong International Fellowship ; Royal Society-K.C. Wong International Fellowship
源URL[http://ir.bao.ac.cn/handle/114a11/55564]  
专题中国科学院国家天文台
通讯作者Du, Wei
作者单位1.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
4.Yunnan Univ, South Western Inst Astron Res, Kunming 650500, Yunnan, Peoples R China
5.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
6.Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
推荐引用方式
GB/T 7714		 Du, Wei,Zhao, Gong-Bo,Fan, Zuhui,et al. An Accurate Analytic Mass Model for Lensing Galaxies[J]. ASTROPHYSICAL JOURNAL,2020,892(1):22.
APA Du, Wei,Zhao, Gong-Bo,Fan, Zuhui,Shu, Yiping,Li, Ran,&Mao, Shude.(2020).An Accurate Analytic Mass Model for Lensing Galaxies.ASTROPHYSICAL JOURNAL,892(1),22.
MLA Du, Wei,et al."An Accurate Analytic Mass Model for Lensing Galaxies".ASTROPHYSICAL JOURNAL 892.1(2020):22.

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来源：国家天文台

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