Poster Open Access

Mapping M Dwarf Metallicities

DiTomasso, Victoria; Schmidt, Sarah J.

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  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.2641980", 
  "title": "Mapping M Dwarf Metallicities", 
  "issued": {
    "date-parts": [
  "abstract": "<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>", 
  "author": [
      "family": "DiTomasso, Victoria"
      "family": "Schmidt, Sarah J."
  "type": "graphic", 
  "id": "2641980"
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