典型文献
The Halo Concentration and Mass Relation Traced by Satellite Galaxies
文献摘要：
We study the relation between halo concentration and mass(c-M relation)using galaxy catalogs of the Seventh and Eighth Data Releases of the Sloan Digital Sky Survey(SDSS DR7 and DR8).Assuming that the satellite galaxies follow the distribution of dark matter,we derive the halo concentration by fitting the satellite radial profile with a Nararro Frank and White(NFW)format.The derived c-M relation covers a wide halo mass range from 10116 to 1014.1 M⊙.We confirm the anti-correlation between the halo mass and concentration as predicted in cosmological simulations.Our results are in good agreement with those derived using galaxy dynamics and gravitational lensing for halos of 1011.6-1012.9 M⊙,while they are slightly lower for halos of 10129-1014.1M⊙.This is because blue satellite galaxies are less concentrated,especially in the inner regions.Instead of using all satellite galaxies,red satellites could be better tracers of the underlying dark matter distribution in galaxy groups.
文献关键词：
中图分类号：
作者姓名：
Qing Gu;Qi Guo;Tianchi Zhang;Wenting Wang;Quan Guo;Liang Gao
作者机构：
Key Laboratory for Computational Astrophysics,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China;Beijing Planetarium,Beijing Academy of Science and Technology,Beijing 100044,China;Department of Astronomy Shanghai Jiao Tong University Shanghai 200240 China;Shanghai Key Laboratory for Particle Physics and Cosmology,Shanghai 200240,China;Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;Institute of Computational Cosmology,Department of Physics,University of Durham,Science Laboratories,South Road,Durham DH1 3LE,UK
文献出处：
引用格式：
[1]Qing Gu;Qi Guo;Tianchi Zhang;Wenting Wang;Quan Guo;Liang Gao-.The Halo Concentration and Mass Relation Traced by Satellite Galaxies)[J].天文和天体物理学研究,2022(12):292-298
A类：
Traced,Galaxies,Releases,Nararro,NFW,halos
B类：
Halo,Concentration,Mass,Relation,by,Satellite,We,study,between,concentration,mass,using,galaxy,catalogs,Seventh,Eighth,Data,Sloan,Digital,Sky,Survey,SDSS,DR7,DR8,Assuming,that,galaxies,follow,distribution,dark,matter,fitting,radial,profile,Frank,White,format,derived,covers,wide,range,from,confirm,anti,correlation,predicted,cosmological,simulations,Our,results,are,good,agreement,those,dynamics,gravitational,lensing,while,they,slightly,lower,1M,This,because,blue,less,concentrated,especially,inner,regions,Instead,satellites,could,better,tracers,underlying,groups
AB值：
0.551737
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