Spectroscopic observations of sn 2012fr: A luminous, normal type ia supernova with early high-velocity features and a late velocity plateau

Childress, MichaelScalzo, RichardSim, Stuart A.Tucker, BradleyYuan, FangSchmidt, BrianCenko, S. BradleySilverman, J. M.Contreras, C.Hsiao, E. Y.Phillips, MarkMorrell, N.Jha, S. W.McCully, C.Filippenko, AlexeiAnderson, Joe P.Benetti, StefanoBufano, Filomenade Jaeger, T.Bayliss, DanielBessell, MichaelKeller, StefanVogt, FredericMazzali, Paolo A.Spyromilio, Jason2015-12-130004-637Xhttp://hdl.handle.net/1885/72817We present 65 optical spectra of the Type Ia SN 2012fr, 33 of which were obtained before maximum light. At early times, SN 2012fr shows clear evidence of a high-velocity feature (HVF) in the Si II λ6355 line that can be cleanly decoupled from the lower v20 pages© 2013. The American Astronomical Society. Author/s retain copyright.Keywords: galaxies: individual (NGC 1365); supernovae: general; supernovae: individual (SN 2012fr)Spectroscopic observations of sn 2012fr: A luminous, normal type ia supernova with early high-velocity features and a late velocity plateau201310.1088/0004-637X/770/1/292016-02-24