Chromospheric Rotational Modulation in Solar-Like Stars - Part Two - Multicomponent Modelling and Rotational Period of Alpha-Centauri from CAII H Spectroscopic Variability
The K1V late-type dwarf α Cen B has been monitored to search for spectroscopic variability in the Ca II H chromospheric line during its rotational period. The observations were made with the Coudé Echelle Spectrograph with the 1.4 Coudé Auxiliary Telescope at ESO, with spectral resolution 80000. Variability in flux up to 29 % and profile
Char, S. et al.
Fecha de publicación:
9
1993