Context. The CARMENES instrument, installed at the 3.5 m telescope of the Calar Alto
Observatory in Almería, Spain, was conceived to deliver high-accuracy radial velocity (RV) …

We determined effective temperatures, surface gravities, and metallicities for a sample of
343 M dwarfs observed with CARMENES, the double-channel, high-resolution spectrograph …

The CARMENES instrument consists of two cross-dispersed´ echelle spectrographs, which
together cover the wavelength range from 5,200 to 17,100˚ A. During its first five years of …

Deriving metallicities for solar-like stars follows well-established methods, but for cooler
stars such as M dwarfs, the determination is much more complicated due to forests of …

We present the discovery of a transiting mini-Neptune around TOI-1201, a relatively bright
and moderately young early M dwarf (J≈ 9.5 mag,~ 600–800 Myr) in an equal-mass~ 8 …

Light from celestial objects interacts with the molecules of the Earth's atmosphere, resulting
in the production of telluric absorption lines in ground-based spectral data. Correcting for …

Context. STEPARSYN is an automatic code written in Python 3. X designed to infer the
stellar atmospheric parameters T eff, log g, and [Fe/H] of FGKM-type stars following the …

Context. Variability caused by stellar activity represents a challenge to the discovery and
characterization of terrestrial exoplanets and complicates the interpretation of atmospheric …

Detailed chemical analyses of M dwarfs are scarce but necessary to constrain the formation
environment and internal structure of planets being found around them. We present …

Context. M dwarfs are ideal targets for the search of Earth-size planets in the habitable zone
using the radial velocity method, and are attracting the attention of many ongoing surveys …