XXIX WS2017
Applications of

Radiative Transfer

to stellar and planetary atmospheres
Tenerife, Spain - 13-17 Nov. 2017

Poster abstract details

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Quantifying the chromospheric activity of M dwarfs from visible and near-infrared CARMENES SPECTRA
D. Montes, F. Labarga, J. Cano, J. A. Caballero, S. V. Jeffers, A. Reiners, P. Schöfer, L. Tal-Or, E. Johnson, M. Zechmeister, D. Shulyak, S. Czesla, K. Froehlich, B. Fuhrmeister, D. Hintz, A. Quirrenbach, S. Reffert, S. Sadegi, I. Ribas, J. C. Morales, E. Herrero, P. J. Amado, and W. Seifert

Abstract

CARMENES is a brand-new, ultra-stable, double-channel spectrograph at the Spanish-German 3.5 m Calar Alto telescope for radial-velocity surveys of M dwarfs with the aim of detecting Earth-mass planets orbiting in the habitable zones of their host stars (Quirrenbach et al. 2016). The CARMENES survey, which began in January 2016 and will last for at least three years, aims to observe approximately 300 M stars, spread over the complete M spectral range. In this contribution we use the visible and near-infrared CARMENES spectra taken until now to analyse in detail the temporal variability of the chromospheric activity level and quantify the effect of the stellar jitter in the radial velocity determinations.