Modelling chemical abundance distributions for dwarf galaxies in the Local Group: The impact of turbulent metal diffusion

@article{Escala2018ModellingCA,
title={Modelling chemical abundance distributions for dwarf galaxies in the Local Group: The impact of turbulent metal diffusion},
author={Ivanna Escala and Andrew Wetzel and Evan N. Kirby and Philip F. Hopkins and Xiangcheng Ma and Coral Wheeler and Duvsan Kerevs and Claude-Andr{\'e} Faucher-Gigu{\e}re and Eliot Quataert},
journal={Monthly Notices of the Royal Astronomical Society},
year={2018},
volume={474},
pages={2194-2211}
}`
• I. Escala, +6 authors E. Quataert
• Published 18 October 2017
• Physics
• Monthly Notices of the Royal Astronomical Society
We investigate stellar metallicity distribution functions (MDFs), including Fe and α-element abundances, in dwarf galaxies from the Feedback in Realistic Environment (FIRE) project. We examine both isolated dwarf galaxies and those that are satellites of a Milky Way-mass galaxy. In particular, we study the effects of including a sub-grid turbulent model for the diffusion of metals in gas. Simulations that include diffusion have narrower MDFs and abundance ratio distributions, because diffusion… Expand
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References

SHOWING 1-10 OF 92 REFERENCES
The distribution of metals in cosmological hydrodynamical simulations of dwarf disc galaxies
We examine the chemical properties of five cosmological hydrodynamical simulations of an M33-like disc galaxy which have been shown previously to be consistent with the morphological characteristicsExpand
Effects of the galactic winds on the stellar metallicity distribution of dwarf spheroidal galaxies
Aims. To study the effects of galactic winds on the stellar metallicity distributions and on the evolution of Draco and Ursa Minor dwarf spheroidal galaxies (dSphs), we compared the predictions ofExpand
STELLAR CHEMICAL SIGNATURES AND HIERARCHICAL GALAXY FORMATION
• Physics
• 2004
To compare the chemistries of stars in the Milky Way dwarf spheroidal (dSph) satellite galaxies with stars in the Galaxy, we have compiled a large sample of Galactic stellar abundances from theExpand
The predicted metallicity distribution of stars in dwarf spheroidal galaxies
We predict the metallicity distribution of stars and the age-metallicity relation for six dwarf spheroidal (dSph) galaxies of the Local Group by means of a chemical evolution model that is able toExpand
The chemical evolution of dwarf spheroidal galaxies: dissecting the inner regions and their stellar populations
Using three-dimensional hydrodynamical simulations of isolated dwarf spheroidal galaxies (dSphs), we undertake an analysis of the chemical properties of their inner regions, identifying theExpand
Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• Physics
• 2009
We present an implementation of stellar evolution and chemical feedback for smoothed particle hydrodynamics simulations. We consider the timed release of individual elements by both massive (Type IIExpand
Computational issues in chemo-dynamical modelling of the formation and evolution of galaxies
• Physics
• 2016
Chemo-dynamical N-body simulations are an essential tool for understanding the formation and evolution of galaxies. As the number of observationally determined stellar abundances continues to climb,Expand
The cosmic baryon cycle and galaxy mass assembly in the FIRE simulations
• Physics
• 2017
We use cosmological simulations from the FIRE (Feedback In Realistic Environments) project to study the baryon cycle and galaxy mass assembly for central galaxies in the halo mass range Mhalo ∼Expand
Connecting the First Galaxies with Ultrafaint Dwarfs in the Local Group: Chemical Signatures of Population III Stars
• Physics
• 2017
We investigate the star formation history and chemical evolution of isolated analogues of Local Group (LG) ultra faint dwarf galaxies (UFDs; stellar mass range of 10 M < M∗ < 10 5 M ) and gas rich,Expand
The dynamical and chemical evolution of dwarf spheroidal galaxies
We present a large sample of fully self-consistent hydrodynamical Nbody/Tree-SPH simulations of isolated dwarf spheroidal galaxies (dSphs). It has enabled us to identify the key physical parametersExpand