The Effects of Metallicity and Abundance Pattern of the ISM on Supernova Feedback
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The Effects of Metallicity and Abundance Pattern of the ISM on Supernova Feedback. / Karpov, Platon I.; Martizzi, Davide; Macias, Phillip; Ramirez-Ruiz, Enrico; Kolborg, Anne N.; Naiman, Jill P.
I: Astrophysical Journal, Bind 896, Nr. 1, 66, 06.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - The Effects of Metallicity and Abundance Pattern of the ISM on Supernova Feedback
AU - Karpov, Platon I.
AU - Martizzi, Davide
AU - Macias, Phillip
AU - Ramirez-Ruiz, Enrico
AU - Kolborg, Anne N.
AU - Naiman, Jill P.
PY - 2020/6
Y1 - 2020/6
N2 - Supernova (SN) feedback plays a vital role in the evolution of galaxies. While modern cosmological simulations capture the leading structures within galaxies, they struggle to provide sufficient resolution to study small-scale stellar feedback, such as the detailed evolution of SN remnants. It is thus common practice to assume subgrid models that are rarely extended to low metallicities and that routinely use the standard solar abundance pattern. With the aid of 1D hydrodynamical simulations, we extend these models to consider low metallicities and nonsolar abundance patterns as derived from spectra of Milky Way stars. For that purpose, a simple, yet effective framework has been developed to generate nonsolar abundance pattern cooling functions. We find that previous treatments markedly over-predict SN feedback at low metallicities and show that non-negligible changes in the evolution of SN remnants of up to 50% in cooling mass and 27% in momentum injection from SN remnants arise from nonsolar abundance patterns. We use our simulations to quantify these results as a function of metallicity and abundance pattern variations and present analytic formulas to accurately describe the trends. These formulas have been designed to serve as subgrid models for SN feedback in cosmological hydrodynamical simulations.
AB - Supernova (SN) feedback plays a vital role in the evolution of galaxies. While modern cosmological simulations capture the leading structures within galaxies, they struggle to provide sufficient resolution to study small-scale stellar feedback, such as the detailed evolution of SN remnants. It is thus common practice to assume subgrid models that are rarely extended to low metallicities and that routinely use the standard solar abundance pattern. With the aid of 1D hydrodynamical simulations, we extend these models to consider low metallicities and nonsolar abundance patterns as derived from spectra of Milky Way stars. For that purpose, a simple, yet effective framework has been developed to generate nonsolar abundance pattern cooling functions. We find that previous treatments markedly over-predict SN feedback at low metallicities and show that non-negligible changes in the evolution of SN remnants of up to 50% in cooling mass and 27% in momentum injection from SN remnants arise from nonsolar abundance patterns. We use our simulations to quantify these results as a function of metallicity and abundance pattern variations and present analytic formulas to accurately describe the trends. These formulas have been designed to serve as subgrid models for SN feedback in cosmological hydrodynamical simulations.
KW - Interstellar medium
KW - Supernova remnants
KW - Astronomical simulations
KW - Galaxy evolution
KW - REGULATED STAR-FORMATION
KW - CLUSTERED SUPERNOVAE
KW - CHEMICAL EVOLUTION
KW - MOLECULAR CLOUDS
KW - SIMULATIONS
KW - GALAXIES
KW - HYDRODYNAMICS
KW - TURBULENCE
KW - DYNAMICS
KW - ELEMENTS
U2 - 10.3847/1538-4357/ab8f23
DO - 10.3847/1538-4357/ab8f23
M3 - Journal article
VL - 896
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 66
ER -
ID: 246729296