13 papers · 1 filter
Significant discrepancies between stellar evolution models and solar-type eclipsing and visual binaries ?
E. Lastennet, J. Fernandes, E. Oblak +1
Individual components of well-detached binary systems are assumed to be two single-like stars with a common origin, i.e. they share the same chemical composition and same age. Ther…
Atmospheric parameters for non-interacting eclipsing binaries: preliminary results from synthetic photometry
E. Lastennet, F. Cuisinier, T. Lejeune
Double-lined spectroscopic binaries which are also eclipsing provide the most accurate stellar data, and are consequently of first importance to improve stellar evolution modelling…
Temperature predictions for dust embedded AGB stars: how far can we go with synthetic near-infrared photometry ?
E. Lastennet, S. Lorenz-Martins, F. Cuisinier +1
We discuss the possibilities of the BaSeL models in its lowest temperature boundary (Teff ~ 2500 K for cool giants) to provide the Teff of AGB stars. We present the first step of o…
The BaSeL library as a basic tool to provide fundamental stellar parameters of future space missions: COROT and GAIA
E. Lastennet, T. Lejeune, F. Cuisinier
COROT and GAIA are two future major space missions directly connected to most of the stellar astrophysic questions, from stellar physics to evolution of galaxies. We describe a pro…
Preparation of the COROT space mission: fundamental stellar parameters determinations from photometric and spectroscopic analyses for COROT potential target candidates
E. Lastennet, F. Lignieres, R. Buser +4
We present a sample of 9 nearby F-type stars with detailed spectroscopic analyses to investigate the Basel Stellar Library (BaSeL) in two photometric systems simultaneously, UBV Jo…
Metal abundance of the eclipsing binary YZ Cas: discrepancy between atmospheric determinations for the Am component
E. Lastennet, D. Valls-Gabaud, C. Jordi
We review current and new estimates of the eclipsing binary YZ Cassiopeiae metallicity (Z). Since the individual components cover a quite large range of mass (1.35-2.31 Solar masse…