The Relationship between Age, Metallicity, and Abundances for Disk Stars in a Simulated Milky Way

The Relationship between Age, Metallicity, and Abundances for Disk Stars in a Simulated Milky Way

Observations of the Milky Way’s low- α disk show that several element abundances correlate with age at fixed metallicity, with unique slopes and small scatters around the age–[X/Fe] relations. In this study, we turn to simulations to explore the age–[X/Fe] relations for the elements C, N, O, Mg, Si,...

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Veröffentlicht in:The Astrophysical journal 2023-01, Vol.942 (1), p.35
Hauptverfasser: Carrillo, Andreia, Ness, Melissa K., Hawkins, Keith, Sanderson, Robyn E., Wang, Kaile, Wetzel, Andrew, Bellardini, Matthew A.
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Sprache:eng
Schlagworte:
Abundance
Age
Astronomy & Astrophysics
ASTRONOMY AND ASTROPHYSICS
Astrophysics
Calcium
Chemical abundances
Galaxies
Hydrodynamical simulations
Metallicity
Milky Way
Milky Way Galaxy
Simulation
Stars
Stars & galaxies
Stellar age
Trends
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container_issue 1
container_start_page 35
container_title The Astrophysical journal
container_volume 942
creator Carrillo, Andreia
Ness, Melissa K.
Hawkins, Keith
Sanderson, Robyn E.
Wang, Kaile
Wetzel, Andrew
Bellardini, Matthew A.
description Observations of the Milky Way’s low- α disk show that several element abundances correlate with age at fixed metallicity, with unique slopes and small scatters around the age–[X/Fe] relations. In this study, we turn to simulations to explore the age–[X/Fe] relations for the elements C, N, O, Mg, Si, S, and Ca that are traced in a FIRE-2 cosmological zoom-in simulation of a Milky Way–like galaxy, m12i, and understand what physical conditions give rise to the observed age–[X/Fe] trends. We first explore the distributions of mono-age populations in their birth and current locations, [Fe/H], and [X/Fe], and find evidence for inside-out radial growth for stars with ages
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subjects Abundance
Age
Astronomy & Astrophysics
ASTRONOMY AND ASTROPHYSICS
Astrophysics
Calcium
Chemical abundances
Galaxies
Hydrodynamical simulations
Metallicity
Milky Way
Milky Way Galaxy
Simulation
Stars
Stars & galaxies
Stellar age
Trends
title The Relationship between Age, Metallicity, and Abundances for Disk Stars in a Simulated Milky Way
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