Variabilidad a largo plazo en alpha Cen B y HD 130948
Abstract
In this work we studied the long-term activity of two solar-type stars. Using our mid-resolution spectra obtained quarterly at CASLEO from 1999 and the spectra acquired continuosly at the CTIO (Chile) from 2008 to date. For the star HD 130948 we detected a possible activity cycle of ~ 5 years and for HD 128621 (alpha Cen B) we confirmed its 8-year activity cycle previously reported.
FULL TEXT IN SPANISH- Publication:
-
Boletin de la Asociacion Argentina de Astronomia La Plata Argentina
- Pub Date:
- 2010
- Bibcode:
- 2010BAAA...53..127B