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

Lázaro, F. J.; Montes, D.; Tabernero, H. M.; Marfil, E.; Caballero, J. A.; González Hernández, J. I.; Consortium, CARMENES

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

MPS-Authors

Lázaro, F. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Montes, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tabernero, H. M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Marfil, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Caballero, J. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

González Hernández, J. I.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Consortium, CARMENES
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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https://ui.adsabs.harvard.edu/abs/2019hsax.conf..416L
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Citation

Lázaro, F. J., Montes, D., Tabernero, H. M., Marfil, E., Caballero, J. A., González Hernández, J. I., et al. (2019). Spectral synthesis of CARMENES M-type stars: stellar atmospheric parameters.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D331-5

Abstract

We show our very first results regarding the stellar atmospheric parameter determinations (T_{eff} , log g, [Fe/H]) of M-type stars observed with CARMENES te{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 te{Phoenix}, the radiative transfer code TurboSpectrum te{TurboSpectrum} and line data from the VALD3 database te{Vald} to obtain a grid of synthetic spectra, and a Markov Chain Monte Carlo process implemented in SteParSyn code te{SteParSyn} to derive the value of the stellar atmospheric parameters.