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The Dependence of the Galaxy Stellar-to-halo Mass Relation on Galaxy Morphology by Correa, Camila A; Schaye, Joop is a Physics and Astronomy article available to read on EtoBox.
What is The Dependence of the Galaxy Stellar-to-halo Mass Relation on Galaxy Morphology about?
## ABSTRACT We investigate the dependence of the local galaxy stellar-to-halo mass relation (SHMR) on galaxy morphology. We use data from the Sloan Digital Sky Survey (SDSS) data release 7 with morphological classifications from Galaxy Zoo, and compare with the EAGLE cosmological simulation. At fixed halo mass in the mass range $10^{11.7}\!-\!10^{12.9}\, {\rm M\_{\odot }}$, the median stellar masses of SDSS disc galaxies are up to a factor of 1.4 higher than the median masses of their elliptical counterparts. However, when we switch from the stellar masses from Kauffmann et al. to those calculated by Chang et al. or Brinchmann et al., the median SHMR from discs and ellipticals coincides in this mass range. For halo masses larger than $10^{13}\, {\rm M\_{\odot }}$, discs are less massive than ellipticals in same-mass haloes, regardless of whose stellar mass estimates we use. However, we find that for these high halo masses the results for discs may be affected by central/satellite misclassifications. The EAGLE simulation predicts that discs are up to a factor of 1.5 more massive than elliptical galaxies residing in same-mass haloes less massive than $10^{13}\, {\rm M\_{\odot }}$, in
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- Author
- Correa, Camila A; Schaye, Joop
- Publisher
- John Wiley and Sons; Oxford University Press; Oxford University Press (OUP) (ISSN 0035-8711)
- Published
- 2020
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)