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The Milky Way Radial Metallicity Gradient as an Equilibrium Phenomenon: Why Old Stars Are Metal Rich

Metallicities of both gas and stars decline toward large radii in spiral galaxies, a trend known as the radial metallicity gradient. We quantify the evolution of the metallicity gradient in the Milky Way as traced by APOGEE red giants with age estimates from machine learning algorithms. Stars up to...

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Principais autores: James W. Johnson, David H. Weinberg, Guillermo A. Blanc, Ana Bonaca, Gwen C. Rudie, Yuxi (Lucy) Lu, Bronwyn Reichardt Chu, Emily J. Griffith, Tawny Sit, Jennifer A. Johnson, Liam O. Dubay, Miqaela K. Weller, Daniel A. Boyea, Jonathan C. Bird
Formato: Artigo
Idioma:Inglês
Publicado em: IOP Publishing 2025-01-01
coleção:The Astrophysical Journal
Assuntos:
Galaxy chemical evolution
Milky Way disk
Milky Way evolution
Chemical enrichment
Chemical abundances
Galactic winds
Acesso em linha:https://doi.org/10.3847/1538-4357/addbe5
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