The role of cold gas and environment on the stellar mass - metallicity relation of nearby galaxies
| Autor: | Thomas M. Hughes, Luca Cortese, J. I. Davies, Giuseppe Gavazzi, Alessandro Boselli |
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| Přispěvatelé: | Hughes, T, Cortese, L, Boselli, A, Gavazzi, G, Davies, J, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES) |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Stellar mass [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] 010308 nuclear & particles physics Star formation Metallicity FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Virgo Cluster Galaxy galaxies: evolution galaxies: spiral cosmology: observations Photometry (optics) 13. Climate action Space and Planetary Science 0103 physical sciences Cluster (physics) Hydrogen line Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2013, 550, ⟨10.1051/0004-6361/201218822⟩ Astronomy and Astrophysics-A&A, EDP Sciences, 2013, 550, ⟨10.1051/0004-6361/201218822⟩ |
| ISSN: | 0004-6361 |
| DOI: | 10.48550/arxiv.1207.4191 |
| Popis: | We investigate the relationship between stellar mass, metallicity and gas content for a magnitude- and volume-limited sample of 260 nearby late-type galaxies in different environments, from isolated galaxies to Virgo cluster members. We derive oxygen abundance estimates using new integrated, drift-scan optical spectroscopy and the base metallicity calibrations of Kewley & Ellison (2008). Combining these measurements with ultraviolet to near-infrared photometry and HI 21 cm line observations, we examine the relations between stellar mass, metallicity, gas mass fraction and star formation rate. We find that, at fixed stellar mass, galaxies with lower gas fractions typically also possess higher oxygen abundances. We also observe a relationship between gas fraction and metal content, whereby gas-poor galaxies are typically more metal-rich, and demonstrate that the removal of gas from the outskirts of spirals increases the observed average metallicity by approximately 0.1 dex. Although some cluster galaxies are gas-deficient objects, statistically the stellar-mass metallicity relation is nearly invariant to the environment, in agreement with recent studies. These results indicate that internal evolutionary processes, rather than environmental effects, play a key role in shaping the stellar mass-metallicity relation. In addition, we present metallicity estimates based on observations of 478 nearby galaxies. Accepted for publication in A&A. 28 pages, including 10 figures and 3 tables |
| Databáze: | OpenAIRE |
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