Poster Open Access

Mapping M Dwarf Metallicities

DiTomasso, Victoria; Schmidt, Sarah J.


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{
  "description": "<p>We use distances derived from Gaia parallaxes cross-matched with SDSS, WISE and 2MASS photometry to assemble a sample of approximately 2 million M dwarfs, defined as stars with SDSS colors redder than r-i = 0.3 and i-z = 0.2. Previous work has found relations between SDSS r-z and WISE W1-W2 colors and the effective temperature and metallicities of cool stars (3550-4200 K). Using our sample and these previously derived relationships, we measure these stars&#39; metallicities and effective temperatures. We calculate the metallicity distribution gradient as a function of galactic height for M dwarfs within 1000 pc of the Sun, which ultimately lends insight to the kinematic and chemical evolution of the Galaxy.</p>", 
  "license": "http://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "Leibniz Institute for Astrophysics Potsdam", 
      "@id": "https://orcid.org/0000-0003-0741-7661", 
      "@type": "Person", 
      "name": "DiTomasso, Victoria"
    }, 
    {
      "affiliation": "Leibniz Institute for Astrophysics Potsdam", 
      "@id": "https://orcid.org/0000-0002-7224-7702", 
      "@type": "Person", 
      "name": "Schmidt, Sarah J."
    }
  ], 
  "url": "https://zenodo.org/record/2641980", 
  "datePublished": "2019-04-16", 
  "contributor": [], 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.5281/zenodo.2641980", 
  "@id": "https://doi.org/10.5281/zenodo.2641980", 
  "@type": "CreativeWork", 
  "name": "Mapping M Dwarf Metallicities"
}
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