典型文献
Subhalo Abundance and Satellite Spatial Distribution in Milky Way-Andromeda-like Paired Haloes
文献摘要：
We study the subhalo and satellite populations in haloes similar to the Milky Way(MW)-Andromeda paired configuration in the Millennium Ⅱ and P-Millennium simulations.We find subhaloes are 5％-15％more abundant in paired haloes than their isolated counterparts that have the same halo mass and large-scale environmental density.Paired haloes tend to reside in a more isotropic environment than isolated haloes,the shear tensor of their large-scale tidal field is possibly responsible for this difference.We also study the thickness of the spatial distribution of the top 11 most massive satellite galaxies obtained in the semi-analytic galaxy sample constructed from the Millennium Ⅱ simulation.Moreover,satellites that have lost their host subhaloes due to the resolution limit of the simulation have been taken into account.As a result,we find that the difference in the distribution of the satellite thickness between isolated and paired haloes is indistinguishable,which suggests that the paired configuration is not responsible for the observed plane of satellites in the MW.The results in this study indicate the paired configuration could bring some nonnegligible effect on the subhalo abundance in the investigation of the MW's satellite problems.
文献关键词：
中图分类号：
作者姓名：
Kemeng Li;Shi Shao;Ping He;Qing Gu;Jie Wang
作者机构：
College of Physics,Jilin University,Changchun 130012,China;National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Center for High Energy Physics,Peking University,Beijing 100871,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Kemeng Li;Shi Shao;Ping He;Qing Gu;Jie Wang-.Subhalo Abundance and Satellite Spatial Distribution in Milky Way-Andromeda-like Paired Haloes)[J].天文和天体物理学研究,2022(12):344-352
A类：
Subhalo,Milky,Andromeda,Haloes,subhalo,subhaloes
B类：
Abundance,Satellite,Spatial,Distribution,Way,like,Paired,We,study,populations,similar,MW,paired,configuration,Millennium,simulations,find,are,more,abundant,than,their,isolated,counterparts,that,have,same,large,scale,environmental,density,tend,reside,isotropic,shear,tensor,tidal,field,possibly,responsible,this,difference,also,thickness,spatial,distribution,top,most,massive,galaxies,obtained,semi,analytic,galaxy,sample,constructed,from,Moreover,satellites,lost,host,due,resolution,limit,been,taken,into,account,between,indistinguishable,which,suggests,not,observed,plane,results,indicate,could,bring,some,nonnegligible,effect,abundance,investigation,problems
AB值：
0.454541
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