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11 papers · 2 filters
Gaia FGK Benchmark Stars: fundamental Teff and log g of the third version
Caroline Soubiran, Orlagh Creevey, Nadege Lagarde +8
Context. Large spectroscopic surveys devoted to the study of the Milky Way, including Gaia, use automated pipelines to massively determine the atmospheric parameters of millions of…
Abundance of radioactive technetium in Przybylski's star revisited
S. M. Andrievsky, S. A. Korotin, K. Werner
We have searched for lines of the radioactive element technetium (Tc) in the spectrum of Przybylski's star (HD101065). The nuclei of this chemical element are formed in the slow pr…
Binaries masses and luminosities with Gaia DR3
S. Chevalier, C. Babusiaux, T. Merle +1
The recent Gaia third data release (DR3) has brought some new exciting data about stellar binaries. It provides new opportunities to fully characterize more stellar systems and con…
Study of a Sample of Faint Be Stars in the Exofield of CoRoT. Part III. Global Spectroscopic Characterization and Astrophysical Parameters of the Central Stars
J. Zorec, A. M. Hubert, C. Martayan +1
The present work is devoted to the study of faint Be stars observed by CoRoT in the fourth long run (LRA02). The astrophysical parameters were determined from the spectra observed…
1D non-LTE corrections for chemical abundance analyses of very metal-poor stars
L. Mashonkina, Yu. Pakhomov, T. Sitnova +3
Detailed chemical abundances of very metal-poor (VMP, [Fe/H] < -2) stars are important for better understanding the First Stars, early star formation and chemical enrichment of gal…
Reanalysis of neutron-capture elements in the benchmark r-rich star CS 31082-001
H. Ernandes, M. J. Castro, B. Barbuy +4
We revisit the abundances of neutron-capture elements in the metal-poor ([Fe/H]=-2.9) r-process-rich halo star CS 31082-001. Partly motivated by the development of the new near-ult…