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

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 07 Apr 2020Embargo end date: 01 Jan 2020 English Publisher:Oxford University Press (OUP)Journal:Monthly Notices of the Royal Astronomical Society, volume 494, pages 2,718-2,726 (issn: 0035-8711, eissn: 1365-2966,

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Authors: Vincent M Woolf; George Wallerstein;

doi: 10.1093/mnras/staa878 , 10.48550/arxiv.2003.11447

arXiv: 2003.11447

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

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Abstract

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.

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Keywords

Astrophysics - Solar and Stellar Astrophysics, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astrophysics - Astrophysics of Galaxies, Solar and Stellar Astrophysics (astro-ph.SR)

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