The mass-metallicity relation of galaxies up to redshift 0.35
Ivo Saviane (1), Irina Yegorova (1), Dominique Proust (2), Fabio, Bresolin (3), Valentin Ivanov (1), Enrico V. Held (4), John Salzer (5), and, R. Michael Rich (6) ((1) ESO, (2) Paris Observatory, (3) University of, Hawaii, (4) Padova Observatory, (5) Indiana University, (6) UCLA)
TL;DR
This study investigates the relationship between galaxy mass and metallicity over the last 4 billion years, using direct oxygen abundance measurements across a wide mass range, and compares findings with local galaxy data.
Contribution
It provides new measurements of oxygen abundances in galaxies up to redshift 0.35, extending the understanding of metallicity evolution over cosmic time.
Findings
Metallicity evolution aligns with local galaxy age-metallicity relations
Oxygen abundances measured for galaxies spanning four orders of magnitude in mass
Probing galaxy evolution over the last 4 Gyr
Abstract
Our research on the age-metallicity and mass-metallicity relations of galaxies is presented and compared to the most recent investigations in the field. We have been able to measure oxygen abundances using the direct method for objects spanning four orders of magnitude in mass, and probing the last 4 Gyr of galaxy evolution. We have found preliminary evidence that the metallicity evolution is consistent with expectations based on age-metallicity relations obtained with low resolution stellar spectra of resolved Local Group galaxies.
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Taxonomy
TopicsAstronomy and Astrophysical Research · Galaxies: Formation, Evolution, Phenomena · Stellar, planetary, and galactic studies