iPTF 13bvn: La primera evidencia de un progenitor binario para una supernova de tipo Ib

M. C. BERSTEN; BENVENUTO; FOLATELLI, GASTÓN

Congreso; 57 Reunión Anual de la Asociación Argentina de Astronomía; 2014

The detection of an object in archival images of the Hubble space telescope at the position of supernova (SN) iPTF 13bvn may be the first direct evidence of a type Ib progenitor. The photometry of this object is compatible with a Wolf-Rayet star with a mass of M. However, hydrodynamical models show that the progenitor would most probably have a mass of M, while masses of the order of 8 Msun are not possible in the context of those models. We propose an interacting binary system as a progenitor of this SN and perform evolutionary calculations giving rise to a self consistent explanation of the shape of the light curve, the absence of hydrogen, as well as the photometry of the pre-SN. Finally, we present color-magnitude and color-color diagrams that will be useful to discern among the different proposed scenarios when a future detection of this object occurs.