L-galaxies 2020: Spatially resolved cold gas phases, star formation and chemical enrichment in galactic discs

Bruno Henriques, Rob Yates, Jian Fu, Qi Guo, Guinevere Kauffmann, Chaichalit Srisawat, Peter Thomas, Simon White

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Abstract

We have updated the Munich galaxy formation model, L-Galaxies, to follow the radial distributions of stars and atomic and molecular gas in galaxy discs. We include an H2-based star-formation law, as well as a detailed chemical-enrichment model with explicit mass-dependent delay times for SN-II, SN-Ia and AGB stars. Information about the star formation, feedback and chemical-enrichment histories of discs is stored in 12 concentric rings. The new model retains the success of its predecessor in reproducing the observed evolution of the galaxy population, in particular, stellar mass functions and passive fractions over the redshift range 0
Original languageEnglish
Pages (from-to)5795–5814
Number of pages24
JournalMonthly Notices of the Royal Astronomical Society
Volume491
Issue number4
Early online date28 Nov 2019
DOIs
Publication statusPublished - 1 Feb 2020

Keywords

  • astro-ph.GA
  • astro-ph.CO

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