The M dwarf problem: Fe and Ti abundances in a volume-limited sample of M dwarf stars

ABSTRACT We report iron and titanium abundance measurements from high-resolution spectra in a volume-limited sample of 106 M0 and M0.5 dwarf stars. The sample includes stars north of the celestial equator and closer than 29 parsecs. The results imply that there is an M dwarf problem similar to the p...

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Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society Vol. 494; no. 2; pp. 2718 - 2726
Main Authors Woolf, Vincent M, Wallerstein, George
Format Journal Article
LanguageEnglish
Published Oxford University Press 11.05.2020
Subjects
Galaxy: evolution
Galaxy: stellar content
stars: late-type
stars: abundances
stars: statistics
Galaxy: abundances
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Summary:ABSTRACT We report iron and titanium abundance measurements from high-resolution spectra in a volume-limited sample of 106 M0 and M0.5 dwarf stars. The sample includes stars north of the celestial equator and closer than 29 parsecs. The results imply that there is an M dwarf problem similar to the previously known G dwarf problem, in that the fraction of low-metallicity M dwarfs is not large enough to fit simple closed-box models of Galactic chemical evolution. This volume-limited sample avoids many of the statistical uncertainties present in a previous study using a brightness-limited sample of M dwarf stars.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/staa878