The MaGICC volume: Reproducing statistical properties of high-redshift galaxies

Rahul Kannan, Greg S. Stinson, Andrea V. Maccío, Chris Brook, Simone M. Weinmann, James Wadsley, Hugh M.P. Couchman

Research output: Contribution to journalArticlepeer-review


We present a cosmological hydrodynamical simulation of a representative volume of the Universe, as part of the Making Galaxies in a Cosmological Context (MaGICC) project. MaGICC uses a thermal implementation for supernova and early stellar feedback. This work tests the feedback model at lower resolution across a range of galaxy masses, morphologies and merger histories. The simulated sample compares well with observations of high-redshift galaxies (z ≥ 2) including the stellar mass-halo mass (M-Mh) relation, the galaxy stellar mass function (GSMF) at low masses (M* < 5 × 1010M) and the number density evolution of low-mass galaxies. The poor match of M-Mh and the GSMF at high masses (M ≥ 5 × 1010M⊙) indicates that supernova feedback is insufficient to limit star formation in these haloes. At z ≥ 0, our model produces too many stars in massive galaxies and slightly underpredicts the stellar mass around L mass galaxy. Altogether our results suggest that early stellar feedback, in conjunction with supernova feedback, plays a major role in regulating the properties of low-mass galaxies at high redshift.

Original languageEnglish (US)
Pages (from-to)3529-3539
Number of pages11
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
StatePublished - Feb 2014


  • Abundances-galaxies
  • Evolution-galaxies
  • Formation-galaxies
  • Methods
  • Numerical-galaxies
  • Star formation-galaxies
  • Stellar content

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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