Sahu, D. K; Anupama, G. C; Anto, P
(Oxford University Press on behalf of the Royal Astronomical Society, 2013-04-01)
We present optical UBVRI photometry and medium-resolution spectroscopy of a transitional Type Ia supernova, SN 2009an, over the period −6 to +150 d from the B maximum. With a Δm15(B) = 1.514 ± 0.132, SN 2009an declines ...