ramses-ch: a new chemodynamical code for cosmological simulations

Authors

  • C. G. Few,

    Corresponding author
    1. Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE
      E-mail: c.gareth.few@googlemail.com
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  • S. Courty,

    1. Université de Lyon; Université Lyon 1, Observatoire de Lyon, 9 avenue Charles André, Saint-Genis Laval F-69230, France; CNRS, UMR 5574, Centre de Recherche Astrophysique de Lyon; Ecole Normale Supérieure de Lyon
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  • B. K. Gibson,

    1. Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE
    2. Monash Centre for Astrophysics, School of Mathematical Sciences, Monash University, Clayton, VIC 3800, Australia
    3. Department of Astronomy & Physics, Saint Mary’s University, Halifax, NS B3H 3C3, Canada
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  • D. Kawata,

    1. Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT
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  • F. Calura,

    1. Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE
    2. Instituto Nazional di Astrofisica, Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy
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  • R. Teyssier

    1. Institute for Theoretical Physics, University of Zürich, CH-8057 Zürich, Switzerland
    2. UMR AIM, CEA Saclay, 91191 Gif-sur-Yvette, France
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E-mail: c.gareth.few@googlemail.com

ABSTRACT

We present a new chemodynamical code –ramses-ch– for use in simulating the self-consistent evolution of chemical and hydrodynamical properties of galaxies within a fully cosmological framework. We build upon the adaptive mesh refinement code ramses, which includes a treatment of self-gravity, hydrodynamics, star formation, radiative cooling and supernova feedback, to trace the dominant isotopes of C, N, O, Ne, Mg, Si and Fe. We include the contribution of Type Ia and Type II supernovae, in addition to low- and intermediate-mass asymptotic giant branch stars, relaxing the instantaneous recycling approximation. The new chemical evolution modules are highly flexible and portable, lending themselves to ready exploration of variations in the underpinning stellar and nuclear physics. We apply ramses-ch to the cosmological simulation of a typical L galaxy, demonstrating the successful recovery of the basic empirical constraints regarding [α/Fe]–[Fe/H] and Type Ia/II supernova rates.

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