Poster Open Access

The metallicity of M dwarfs: photometric calibrations with Markov Chain Monte Carlo and Bayesian inference

Duque-Arribas, Christian; Montes, David; Tabernero, Hugo M.; Marfil, Emilio; Caballero, Jose Antonio


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{
  "description": "<p>In our on-going effort to characterize M dwarfs, we have carried out multi-band photometry calibrations of metallicity for early and intermediate M dwarfs using Gaia EDR3, 2MASS and AllWISE. These catalogs, combined with a sample of 5435 M dwarfs with additional parameters determined by APOGEE high-resolution spectroscopy, allow us to study the effect of the chemical composition in color-color and color-magnitude diagrams. We train the calibrations using Bayesian statistics and Markov Chain Monte Carlo (MCMC) techniques and derive several photometric calibrations aplicable to M dwarfs with metallicities of -0.4 &le; [Fe/H] &le; +0.4, obtaining estimations reliable to 0.10 dex. Lastly, we compare our results with previous photometric studies of metallicity for an additional sample of FGK+M common-proper-motion systems, finding a great predictive performance.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "Departamento de F\u00edsica de la Tierra y Astrof\u00edsica & IPARCOS-UCM (Instituto de F\u00edsica de Part\u00edculas y del Cosmos de la UCM), 0 Facultad de Ciencias F\u00edsicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain", 
      "@id": "https://orcid.org/0000-0002-1758-3973", 
      "@type": "Person", 
      "name": "Duque-Arribas, Christian"
    }, 
    {
      "affiliation": "Departamento de F\u00edsica de la Tierra y Astrof\u00edsica & IPARCOS-UCM (Instituto de F\u00edsica de Part\u00edculas y del Cosmos de la UCM), 0 Facultad de Ciencias F\u00edsicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain", 
      "@type": "Person", 
      "name": "Montes, David"
    }, 
    {
      "affiliation": "Centro de Astrobiolog\u00eda (CSIC-INTA), Carretera de Ajalvir km 4, Torrej\u00f3n de Ardoz, 28850 Madrid, Spain", 
      "@type": "Person", 
      "name": "Tabernero, Hugo M."
    }, 
    {
      "affiliation": "Departamento de F\u00edsica de la Tierra y Astrof\u00edsica & IPARCOS-UCM (Instituto de F\u00edsica de Part\u00edculas y del Cosmos de la UCM), 0 Facultad de Ciencias F\u00edsicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain", 
      "@type": "Person", 
      "name": "Marfil, Emilio"
    }, 
    {
      "affiliation": "Centro de Astrobiolog\u00eda (CSIC-INTA), ESAC campus, Camino Bajo del Castillo s/n, 28691 Villanueva de la Ca\u00f1ada, Madrid, Spain", 
      "@type": "Person", 
      "name": "Caballero, Jose Antonio"
    }
  ], 
  "url": "https://zenodo.org/record/4562444", 
  "datePublished": "2021-02-25", 
  "keywords": [
    "Cool Stars on the main sequence"
  ], 
  "@type": "CreativeWork", 
  "contributor": [
    {
      "@type": "Person", 
      "name": "Wolk, Scott"
    }
  ], 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.5281/zenodo.4562444", 
  "@id": "https://doi.org/10.5281/zenodo.4562444", 
  "workFeatured": {
    "url": "http://coolstars20cfa.harvard.edu/cs20half/", 
    "alternateName": "CS20.5", 
    "location": "virtually anywhere", 
    "@type": "Event", 
    "name": "The 20.5th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun"
  }, 
  "name": "The metallicity of M dwarfs: photometric calibrations with Markov Chain Monte Carlo and Bayesian inference"
}
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