Massive stars exploding in a He-rich circumstellar medium โ IX. SN 2014av, and characterization of Type Ibn SNe
Massive stars exploding in a He-rich circumstellar medium โ IX. SN 2014av, and characterization of Type Ibn SNe
We present spectroscopic and photometric data of the Type Ibn supernova (SN) 2014av, discovered by the Xingming Observatory Sky Survey. Stringent pre-discovery detection limits indicate that the object was detected for the first time about 4 days after the explosion. A prompt follow-up campaign arranged by amateur astronomers allowed us โฆ