Un modelo de d ́ınamo para ε Eridani

F. MONITTI; BUCCINO ANDREA; LAURA SRAIBMAN

San Juan,

Congreso; 59ª REUNIÓN ANUAL ASOCIACIÓN DE ASTRONOMÍA ARGENTINA; 2016

Asociación Argentina de Astronomía

ε Eridani is an active young K2V star (0.8 Gyr), which exhibits a short and long-term chromospheric cycles of 3 and 13-yr periods. While between 1985 and 1992, the star went through a broad activity minimum, similar to the Maunder Minimum-state. Motivated by these results, we found in ε Eridani a great opportunity to test the solar cinematic dynamo model built in Sraibman & Minotti (2016). In this work we present the components of the magnetic fields in the stellar surface derived from the model. To contrast these results to the registry of activity obtained from stellar observations, we also computed an activity index associated to the magnetic field.