3 papers
astro-ph2000
Rotation and lithium in single giant stars
J. R. De Medeiros, J. D. do Nascimento, S. Sankarankutty +2
In the present work, we study the link between rotation and lithium abundance in giant stars of luminosity class III, on the basis of a large sample of single stars of spectral typ…
astro-ph2000
Ca II activity and rotation in F-K evolved stars
L. Pasquini, J. R. de Medeiros, L. Girardi
(Abridged) Ca II H and K high resolution observations for 60 evolved stars in the field and in 5 open clusters are presented. From these spectra chromospheric fluxes are derived, a…
astro-ph2000
Lithium and rotation on the subgiant branch II. Theoretical analysis of observations
J. D. do Nascimento, C. Charbonnel, A. Lebre +2
Lithium abundances and rotation, determined for 120 subgiant stars in Lebre et al. (1999) are analyzed. To this purpose, the evolutionary status of the sample as well as the indivi…