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The effect of hydrodynamics alone on the subhalo population in a ?CDM rich cluster sized dark matter halo
Jia, Jun-Yi1,2; Gao, Liang1,2,3; Qu, Yan1
2020-11-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume20Issue:11Pages:9
AbstractWe perform a set of non-radiative hydro-dynamical (NHD) simulations of a rich cluster sized dark matter halo from the Phoenix Project with three different numerical resolutions, to investigate the effect of hydrodynamics alone on the subhalo population in the halo. Compared to dark matter only (DMO) simulations of the same halo, subhaloes are less abundant for relatively massive subhaloes (M-sub > 2.5 x 10(9)h(-1)M(circle dot), or V-max > 70 km s(-1)) but more abundant for less massive subhaloes in the NHD simulations. This results in different shapes in the subhalo mass/V-max function in two different sets of simulations. At given subhalo mass, the subhaloes less massive than 10(10) h(-1)M(circle dot) have larger V-max in the NHD than DMO simulations, while V-max is similar for the subhaloes more massive than the mass value. This is mainly because the progenitors of present day low mass subhaloes have larger concentration parameters in the NHD than DMO simulations. The survival number fraction of the accreted low mass progenitors of the main halo at redshift 2 is about 50 percent higher in the NHD than DMO simulations.
Keywordcosmology baryon methods numerical
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC) ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC) ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC) ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC)
DOI10.1088/1674-4527/20/11/174
WOS KeywordRADIAL-DISTRIBUTION ; SATELLITE GALAXIES ; MILKY-WAY ; SUBSTRUCTURE ; SIMULATIONS ; BARYONS ; EVOLUTION ; PHYSICS ; IMPACT ; CODE
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0203300] ; Key Program of the National Natural Science Foundation of China (NFSC)[11733010]
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC) ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC) ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC) ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the National Natural Science Foundation of China (NFSC) ; Key Program of the National Natural Science Foundation of China (NFSC)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000593521600001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/80579
Collection中国科学院国家天文台
Corresponding AuthorJia, Jun-Yi
Affiliation1.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Univ Durham, Dept Phys, Inst Computat Cosmol, South Rd, Durham DH1 3LE, England
Recommended Citation
GB/T 7714
Jia, Jun-Yi,Gao, Liang,Qu, Yan. The effect of hydrodynamics alone on the subhalo population in a ?CDM rich cluster sized dark matter halo[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(11):9.
APA Jia, Jun-Yi,Gao, Liang,&Qu, Yan.(2020).The effect of hydrodynamics alone on the subhalo population in a ?CDM rich cluster sized dark matter halo.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(11),9.
MLA Jia, Jun-Yi,et al."The effect of hydrodynamics alone on the subhalo population in a ?CDM rich cluster sized dark matter halo".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.11(2020):9.
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