Caracterización de la actividad magnética de un conjunto de estrellas M a partir de la base de datos de SOPHIE

OVIEDO, C.; BUCCINO, A P; DIAZ, R. F.

Congreso; 63a Reunión Anual de la Asociación Argentina de Atronomía; 2021

During the last decades, M stars have gained substantial interest in the search for exoplanets due not only to the high occurrence of terrestrial-type planets but also to the greater ease of detection of low-mass planets. However, one of the major limitations in the study of extrasolar planetary systems using the radial velocity method is the presence of the activity cycles of the stars. In this work, we present the first steps to perform a unique study of activity in those dM stars that are targets in planet search programs. From the extensive database of the SOPHIE spectrograph installed on the 1.93 m telescope at the Haute-Provence Observatory (CNRS), France, we performed the intercalibration among standard indicators of stellar activity in a set of 14 M stars.