RAMSES-CH: A New Chemodynamical Code for Cosmological Simulations

TL;DR

RAMSES-CH is a novel chemodynamical simulation code that models galaxy evolution with detailed chemical tracking, including supernovae and stellar contributions, within a cosmological context.

Contribution

It introduces a flexible, portable chemodynamical module to the RAMSES code, enabling detailed chemical evolution modeling beyond the instantaneous recycling approximation.

Findings

Successfully reproduces empirical [{ extalpha}/Fe]-[Fe/H] relations.

Accurately models Type Ia and II supernovae rates.

Demonstrates applicability to typical L* galaxy simulations.

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 supernovae feedback, to trace the dominant isotopes of C, N, O, Ne, Mg, Si, and Fe. We include the contribution of Type Ia and 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 underpining 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, [{\alpha}/Fe]-[Fe/H] and Type Ia/II supernovae rates.