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The galaxy population in cold and warm dark matter cosmologies
Wang, Lan1; Gonzalez-Perez, Violeta2,3; Xie, Lizhi4; Cooper, Andrew P.2; Frenk, Carlos S.2; Gao, Liang1; Hellwing, Wojciech A.3,5; Helly, John2; Lovell, Mark R.6,7; Jiang, Lilian2
2017-07-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume468Issue:4Pages:4579-4591
AbstractWe use a pair of high-resolution N-body simulations implementing two dark matter models, namely the standard cold dark matter (CDM) cosmogony and a warm dark matter (WDM) alternative where the dark matter particle is a 1.5 keV thermal relic. We combine these simulations with the GALFORM semi-analytical galaxy formation model to explore differences between the resulting galaxy populations. We use GALFORM model variants for CDM and WDM that result in the same z = 0 galaxy stellar mass function by construction. We find that most of the studied galaxy properties have the same values in these two models, indicating that both dark matter scenarios match current observational data equally well. Even in underdense regions, where discrepancies in structure formation between CDM and WDM are expected to be most pronounced, the galaxy properties are only slightly different. The only significant difference in the local universe we find is in the galaxy populations of 'Local Volumes', regions of radius 1-8 Mpc around simulated MilkyWay analogues. In such regions, our WDM model provides a better match to observed local galaxy number counts and is five times more likely than the CDM model to predict subregions within them that are as empty as the observed Local Void. Thus, a highly complete census of the Local Volume and future surveys of void regions could provide constraints on the nature of dark matter.
SubtypeArticle
KeywordGalaxies: Abundances Galaxies: Formation Galaxies: High-redshift Dark Matter
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNSFC(11573031 ; NSFC(11573031 ; European Research Council(DEGAS-259586 ; European Research Council(DEGAS-259586 ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; STFC capital grants(ST/H008519/1 ; STFC capital grants(ST/H008519/1 ; STFC DiRAC Operations grant(ST/K003267/1) ; STFC DiRAC Operations grant(ST/K003267/1) ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; 11133003) ; 11133003) ; 646702) ; 646702) ; ST/K00087X/1) ; ST/K00087X/1) ; NSFC(11573031 ; NSFC(11573031 ; European Research Council(DEGAS-259586 ; European Research Council(DEGAS-259586 ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; STFC capital grants(ST/H008519/1 ; STFC capital grants(ST/H008519/1 ; STFC DiRAC Operations grant(ST/K003267/1) ; STFC DiRAC Operations grant(ST/K003267/1) ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; 11133003) ; 11133003) ; 646702) ; 646702) ; ST/K00087X/1) ; ST/K00087X/1)
DOI10.1093/mnras/stx788
WOS KeywordSTELLAR MASS FUNCTION ; MILKY-WAY SATELLITES ; LAMBDA-CDM ; COPERNICUS COMPLEXIO ; DWARF SPHEROIDALS ; COSMIC EVOLUTION ; MERGER HISTORIES ; FORMATION MODELS ; REDSHIFT SURVEY ; ASSEMBLY GAMA
Indexed BySCI
Language英语
Funding OrganizationNSFC(11573031 ; NSFC(11573031 ; European Research Council(DEGAS-259586 ; European Research Council(DEGAS-259586 ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; STFC capital grants(ST/H008519/1 ; STFC capital grants(ST/H008519/1 ; STFC DiRAC Operations grant(ST/K003267/1) ; STFC DiRAC Operations grant(ST/K003267/1) ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; 11133003) ; 11133003) ; 646702) ; 646702) ; ST/K00087X/1) ; ST/K00087X/1) ; NSFC(11573031 ; NSFC(11573031 ; European Research Council(DEGAS-259586 ; European Research Council(DEGAS-259586 ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; Polish National Science Center(UMO-2012/07/D/ST9/02785) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; BIS National E-infrastructure capital grant(ST/K00042X/1) ; STFC capital grants(ST/H008519/1 ; STFC capital grants(ST/H008519/1 ; STFC DiRAC Operations grant(ST/K003267/1) ; STFC DiRAC Operations grant(ST/K003267/1) ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; 11133003) ; 11133003) ; 646702) ; 646702) ; ST/K00087X/1) ; ST/K00087X/1)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000402819700065
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8810
Collection星系宇宙学研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Datun Rd 20A, Beijing 100012, Peoples R China
2.Univ Durham, Dept Phys, Inst Computat Cosmol, South Rd, Durham DH1 3LE, England
3.Univ Portsmouth, Inst Cosmol & Gravitat, Burnaby Rd, Portsmouth PO1 3FX, Hants, England
4.INAF Astron Observ Trieste, Via GB Tiepolo 11, I-34143 Trieste, Italy
5.Univ Zielona Gora, Janusz Gil Inst Astron, Ul Szafrana 2, PL-65516 Zielona Gora, Poland
6.Univ Amsterdam, GRAPPA, Sci Pk 904, NL-1098XH Amsterdam, Netherlands
7.Inst Lorentz Theoret Phys, Niels Bohrweg 2, NL-2333CA Leiden, Netherlands
Recommended Citation
GB/T 7714
Wang, Lan,Gonzalez-Perez, Violeta,Xie, Lizhi,et al. The galaxy population in cold and warm dark matter cosmologies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(4):4579-4591.
APA Wang, Lan.,Gonzalez-Perez, Violeta.,Xie, Lizhi.,Cooper, Andrew P..,Frenk, Carlos S..,...&Jiang, Lilian.(2017).The galaxy population in cold and warm dark matter cosmologies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(4),4579-4591.
MLA Wang, Lan,et al."The galaxy population in cold and warm dark matter cosmologies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.4(2017):4579-4591.
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