313 citations · 2k across the 25 of their papers we have counts for
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ODUSSEAS: A machine learning tool to derive effective temperature and metallicity for M dwarf stars
A. Antoniadis-Karnavas, S. G. Sousa, E. Delgado-Mena +3
Aims. The derivation of spectroscopic parameters for M dwarf stars is very important in the fields of stellar and exoplanet characterization. The goal of this work is the creation…
SPIRou Input Catalogue: Global properties of 440 M dwarfs observed with ESPaDOnS at CFHT
Pascal Fouqué, Claire Moutou, Lison Malo +13
Present and future high-precision radial-velocity spectrometers dedicated to the discovery of low-mass planets orbiting low-mass dwarfs need to focus on the best selected stars to…
NIR spectroscopy of the Sun and HD20010 - Compiling a new linelist in the NIR
D. T. Andreasen, S. G. Sousa, E. Delgado Mena +4
Context: Effective temperature, surface gravity, and metallicity are basic spectroscopic stellar parameters necessary to characterize a star or a planetary system. Reliable atmosph…
Rotation period distribution of CoRoT and Kepler Sun-like stars
I. C. Leão, L. Pasquini, C. E. Ferreira Lopes +9
We study the distribution of the photometric rotation period (Prot), which is a direct measurement of the surface rotation at active latitudes, for three subsamples of Sun-like sta…
The variability behavior of CoRoT M-giant Stars
C. E. Ferreira Lopes, V. Neves, I. C. Leão +8
For 6 years the Convection, Rotation, and Planetary Transits (CoRoT) space mission has acquired photometric data from more than one hundred thousand point sources towards and direc…
Homogeneous spectroscopic parameters for bright planet host stars from the northern hemisphere
S. G. Sousa, N. C. Santos, A. Mortier +6
Aims. In this work we derive new precise and homogeneous parameters for 37 stars with planets. For this purpose, we analyze high resolution spectra obtained by the NARVAL spectrogr…
Metallicity of M dwarfs IV. A high-precision [Fe/H] and Teff technique from high-resolution optical spectra for M dwarfs
V. Neves, X. Bonfils, N. C. Santos +4
Aims. In this work we develop a technique to obtain high precision determinations of both metallicity and effective temperature of M dwarfs in the optical. Methods. A new method is…
SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs I. New atmospheric parameters and masses for 48 stars with planets
N. C. Santos, S. G. Sousa, A. Mortier +8
Due to the importance that the star-planet relation has to our understanding of the planet formation process, the precise determination of stellar parameters for the ever increasin…
Metallicity of M dwarfs III. Planet-metallicity and planet-stellar mass correlations of the HARPS GTO M dwarf sample
V. Neves, X. Bonfils, N. C. Santos +4
Aims. The aim of this work is the study of the planet-metallicity and the planet-stellar mass correlations for M dwarfs from the HARPS GTO M dwarf subsample Methods. We use a new m…
Metallicity of M dwarfs II. A comparative study of photometric metallicity scales
V. Neves, X. Bonfils, N. C. Santos +6
Stellar parameters are not easily derived from M dwarf spectra, which are dominated by complex bands of diatomic and triatomic molecules and not well described at the line by line…
Metallicity of M dwarfs: the link to exoplanets
V. Neves, X. Bonfils, N. C. Santos
The determination of the stellar parameters of M dwarfs is of prime importance in the fields of galactic, stellar and planetary astronomy. M stars are the least studied galactic co…
Searching for the signatures of terrestial planets in solar analogs
J. I. Gonzalez Hernandez, G. Israelian, N. C. Santos +4
We present a fully differential chemical abundance analysis using very high-resolution (R >~ 85,000) and very high signal-to-noise (S/N~800 on average) HARPS and UVES spectra of 7…