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Moritani","submitted_at":"2013-06-24T00:21:17Z","abstract_excerpt":"We present a set of photometric and spectroscopic observations of a bright Type Ib supernova SN 2012au from -6d until ~+150d after maximum. The shape of its early R-band light curve is similar to that of an average Type Ib/c supernova. The peak absolute magnitude is M_R=-18.7+-0.2 mag, which suggests that this supernova belongs to a very luminous group among Type Ib supernovae. The line velocity of He I {\\lambda}5876 is about 15,000 km/s around maximum, which is much faster than that in a typical Type Ib supernova. 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