ICATE 21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Searching for chromospheric activity cycles in 1111 FGK-type stars from the HARPS GTO planet search program
Autor/es:
MARCELO JAQUE ARANCIBIA; PAULA MIQUELARENA; CARLOS SAFFE; MATÍAS FLORES; ANDREA BUCCINO
Lugar:
La Serena
Reunión:
Congreso; Segunda reunión binacional AAA-SOCHIAS; 2018
Institución organizadora:
Sociedad Chilena de Astronomía (SOCHIAS) - Asociación Argentina de Astronomía (AAA)
Resumen:
The monitoring of many stars with magnetic cycles could help for a better understanding of their dependence with the stellar properties and the place occupied by the Sun in this context. Up to now, there aremany questions related with the solar cycle (for example, amplitude, shape and length cycle fluctuations), which could be addressed if the number of stellar activity cycles detected in solar-analogues and solar-twin stars were increased. In this work, we performed a systematic search for chromospheric activity cycles in a sample of 1111FGK stars belonging to the HARPS GTO planet search program. As a result, we were able to analyse in detail the chromospheric activity for 600 of these objects. To this end, we calculate the Mount Wilson index (S MW) for each object and then the corresponding temporal series were individually analyzed by using the generalised Lomb-Scargle periodogram.
