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    • MULTI-WAVELENGTH OBSERVATIONS OF SUPERNOVA 2011ei: TIME-DEPENDENT CLASSIFICATION OF TYPE IIb AND Ib SUPERNOVAE AND IMPLICATIONS FOR THEIR PROGENITORS 

      Vljevic, Dan Milisa; Margutti, Raffaella; Soderberg, Alicia; Pignata Libralato, Giuliano; Chomiuk, Laura; Fesen, Robert A.; Bufano, Filomena; Sanders, Nathan E.; Parrent, Jerod T.; Parker, Stuart; Mazzali, Paolo; Pian, Elena; Pickering, Timothy; Buckley, David A.; Crawford, Steven M.; Gulbis, Amanda A.; Hettlage, Christian; Hooper, Eric; Nordsieck, Kenneth H.; O’Donoghue, Darragh; Husser, Tim Oliver; Potter, Stephen; Kniazev, Alexei; Kotze, Paul; Romero Colmenero, Encarni; Vaisanen, Petri; Wolf, Marsha; Bietenholz, Michael F.; Bartel, Norbert; Fransson, Claes; Walker, Emma S.; Brunthaler, Andreas; Chakraborti, Sayan; Levesque, Emily M.; MacFadyen, Andrew; Drescher, Colin; Bock, Greg; Marples, Peter; Anderson, Joseph P.; Benetti, Stefano; Reichart, Daniel; Ivarsen, Kevin (The American Astronomical Society, 2013-04)
      We present X-ray, UV/optical, and radio observations of the stripped-envelope, core-collapse supernova (SN) 2011ei, one of the least luminous SNe IIb or Ib observed to date. Our observations begin with a discovery within ∼1 ...