The 20th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
Published October 8, 2018 | Version v1
Poster Open

Spectral synthesis of CARMENES M-type stars: stellar atmospheric parameters

Authors/Creators

  • 1. Departamento de Física de la Tierra y Astrofísica, Universidad Complutense de Madrid
  • 2. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Escuela Politécnica Superior, Universidad de Alicante
  • 3. Centro de Astrobiología, CSIC-INTA
  • 4. Instituto de Astrofísica de Canarias

Contributors

Editor:

  • 1. Harvard-Smithsonian Center for Astrophysics

Description

We show our very first results regarding the stellar atmospheric parameter determinations (Teff, log g, [M/H]) of M-type stars observed with CARMENES by means of the spectral synthesis method. We have selected spectral ranges around iron and titanium lines and molecular bands in three reference M-type stars: GX And (M1.0 V), Luyten's star (M3.5 V), and Teegarden's star (M7.0 V). We employ PHOENIX stellar model atmospheres, the radiative transfer code Turbospectrum and line data from the VALD3 database to obtain a grid of synthetic spectra, and a Markov Chain Monte Carlo process implemented in SteParSyn code to derive the value of the stellar atmospheric parameters.

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CoolStars20EmilioGomezMarfil.pdf

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Additional details

References

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