Massive stars exploding in a He-rich circumstellar medium. I. Type Ibn (SN 2006jc-like) events

A. Pastorello, S. Mattila, L. Zampieri +26

We present new spectroscopic and photometric data of the type Ibn supernovae 2006jc, 2000er and 2002ao. We discuss the general properties of this recently proposed supernova family…