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NIHAO project - I. Reproducing the inefficiency of galaxy formation across cosmic time with a large sample of cosmological hydrodynamical simulations
Wang, Liang1,2,3; Dutton, Aaron A.2; Stinson, Gregory S.2; Maccio, Andrea V.2; Penzo, Camilla1; Kang, Xi1; Keller, Ben W.4; Wadsley, James4
2015-11-21
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume454Issue:1Pages:83-94
AbstractWe introduce project NIHAO (Numerical Investigation of a Hundred Astrophysical Objects), a set of 100 cosmological zoom-in hydrodynamical simulations performed using the GASOLINE code, with an improved implementation of the SPH algorithm. The haloes in our study range from dwarf (M-200 similar to 5 x 10(9) M-circle dot) to Milky Way (M-200 similar to 2 x 10(12) M-circle dot) masses, and represent an unbiased sampling of merger histories, concentrations and spin parameters. The particle masses and force softenings are chosen to resolve the mass profile to below 1 per cent of the virial radius at all masses, ensuring that galaxy half-light radii are well resolved. Using the same treatment of star formation and stellar feedback for every object, the simulated galaxies reproduce the observed inefficiency of galaxy formation across cosmic time as expressed through the stellar mass versus halo mass relation, and the star formation rate versus stellar mass relation. We thus conclude that stellar feedback is the chief piece of physics required to limit the efficiency of star formation in galaxies less massive than the Milky Way.
KeywordMethods: Numerical Galaxies: Dwarf Galaxies: Evolution Galaxies: Formation Galaxies: Spiral Cosmology: Theory
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1093/mnras/stv1937
WOS KeywordINITIAL MASS FUNCTION ; STAR-FORMATION RATES ; DARK-MATTER HALOES ; SMOOTHED-PARTICLE HYDRODYNAMICS ; STELLAR MASS ; LUMINOSITY FUNCTION ; DISK GALAXIES ; FORMATION HISTORIES ; EAGLE SIMULATIONS ; FORMING GALAXIES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000363657000005
Citation statistics
Cited Times:91[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16033
Collection南极天文中心
Affiliation1.Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Max Planck Inst Astron, D-69117 Heidelberg, Germany
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
Recommended Citation
GB/T 7714
Wang, Liang,Dutton, Aaron A.,Stinson, Gregory S.,et al. NIHAO project - I. Reproducing the inefficiency of galaxy formation across cosmic time with a large sample of cosmological hydrodynamical simulations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,454(1):83-94.
APA Wang, Liang.,Dutton, Aaron A..,Stinson, Gregory S..,Maccio, Andrea V..,Penzo, Camilla.,...&Wadsley, James.(2015).NIHAO project - I. Reproducing the inefficiency of galaxy formation across cosmic time with a large sample of cosmological hydrodynamical simulations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,454(1),83-94.
MLA Wang, Liang,et al."NIHAO project - I. Reproducing the inefficiency of galaxy formation across cosmic time with a large sample of cosmological hydrodynamical simulations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 454.1(2015):83-94.
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