---
res:
  bibo_abstract:
  - We use the hydrodynamical EAGLE simulation to study the magnitude and origin of
    the scatter in the stellar mass–halo mass relation for central galaxies. We separate
    cause and effect by correlating stellar masses in the baryonic simulation with
    halo properties in a matched dark matter only (DMO) simulation. The scatter in
    stellar mass increases with redshift and decreases with halo mass. At z = 0.1,
    it declines from 0.25 dex at M200, DMO ≈ 1011 M⊙ to 0.12 dex at M200, DMO ≈ 1013
    M⊙, but the trend is weak above 1012 M⊙. For M200, DMO < 1012.5 M⊙ up to 0.04
    dex of the scatter is due to scatter in the halo concentration. At fixed halo
    mass, a larger stellar mass corresponds to a more concentrated halo. This is likely
    because higher concentrations imply earlier formation times and hence more time
    for accretion and star formation, and/or because feedback is less efficient in
    haloes with higher binding energies. The maximum circular velocity, Vmax, DMO,
    and binding energy are therefore more fundamental properties than halo mass, meaning
    that they are more accurate predictors of stellar mass, and we provide fitting
    formulae for their relations with stellar mass. However, concentration alone cannot
    explain the total scatter in the Mstar−M200,DMO relation, and it does not explain
    the scatter in Mstar–Vmax, DMO. Halo spin, sphericity, triaxiality, substructure
    and environment are also not responsible for the remaining scatter, which thus
    could be due to more complex halo properties or non-linear/stochastic baryonic
    effects.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Jorryt J
      foaf_name: Matthee, Jorryt J
      foaf_surname: Matthee
      foaf_workInfoHomepage: http://www.librecat.org/personId=7439a258-f3c0-11ec-9501-9df22fe06720
    orcid: 0000-0003-2871-127X
  - foaf_Person:
      foaf_givenName: Joop
      foaf_name: Schaye, Joop
      foaf_surname: Schaye
  - foaf_Person:
      foaf_givenName: Robert A.
      foaf_name: Crain, Robert A.
      foaf_surname: Crain
  - foaf_Person:
      foaf_givenName: Matthieu
      foaf_name: Schaller, Matthieu
      foaf_surname: Schaller
  - foaf_Person:
      foaf_givenName: Richard
      foaf_name: Bower, Richard
      foaf_surname: Bower
  - foaf_Person:
      foaf_givenName: Tom
      foaf_name: Theuns, Tom
      foaf_surname: Theuns
  bibo_doi: 10.1093/mnras/stw2884
  bibo_issue: '2'
  bibo_volume: 465
  dct_date: 2017^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/0035-8711
  - http://id.crossref.org/issn/1365-2966
  dct_language: eng
  dct_publisher: Oxford University Press@
  dct_subject:
  - Space and Planetary Science
  - Astronomy and Astrophysics
  - 'galaxies: evolution'
  - 'galaxies: formation'
  - 'galaxies: haloes'
  - 'cosmology: theory'
  dct_title: The origin of scatter in the stellar mass–halo mass relation of central
    galaxies in the EAGLE simulation@
...