Milisavljevic, Dan; Patnaude, Daniel J.; Chevalier, Roger A.; Raymond, John C.; Fesen, Robert A.; Margutti, Raffaella; Conner, Brody; Banovetz, John
(2018)
We present an optical spectrum of the energetic Type Ib supernova (SN) 2012au obtained at an unprecedented epoch of 6.2 yr after explosion. Forbidden transition emission lines of oxygen and sulfur are detected with expansion ...
