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The metamorphosis of Supernova SN2008D/XRF080109: a link between Supernovae and GRBs/Hypernovae
Paolo A. Mazzali, Stefano Valenti, Massimo Della Valle +38
The only supernovae (SNe) to have shown early gamma-ray or X-ray emission thus far are overenergetic, broad-lined Type Ic SNe (Hypernovae - HNe). Recently, SN 2008D shows several n…
A giant outburst two years before the core-collapse of a massive star
A. Pastorello, S. J. Smartt, S. Mattila +32
The death of massive stars produces a variety of supernovae, which are linked to the structure of the exploding stars. The detection of several precursor stars of Type II supernova…
ESC observations of SN 2005cf. I. Photometric Evolution of a Normal Type Ia Supernova
A. Pastorello, S. Taubenberger, N. Elias-Rosa +20
We present early-time optical and near-infrared photometry of supernova (SN) 2005cf. The observations, spanning a period from about 12 days before to 3 months after maximum, have b…
ESC and KAIT Observations of the Transitional Type Ia SN 2004eo
A. Pastorello, P. A. Mazzali, G. Pignata +31
We present optical and infrared observations of the unusual Type Ia supernova (SN) 2004eo. The light curves and spectra closely resemble those of the prototypical SN 1992A, and the…
Type Ia SN1999cw: photometric and spectroscopic study
F. Bufano, M. Turatto, S. Benetti +4
The preliminary analysis of the optical data of SN1999cw show that this object has the photometric and spectroscopic behavior of a Type Ia supernova similar to SN1991T, reaching an…