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NTT and NOT spectroscopy of SDSS-II supernovae
L. Ostman, J. Nordin, A. Goobar +18
Context. The SDSS-II Supernova Survey, conducted between 2005 and 2007, was designed to detect a large number of Type Ia supernovae (SNe Ia) around z~0.2, the redshift "gap" betwee…
High luminosity, slow ejecta and persistent carbon lines: SN 2009dc challenges thermonuclear explosion scenarios
S. Taubenberger, S. Benetti, M. Childress +22
SN 2009dc shares similarities with normal Type Ia supernovae, but is clearly overluminous, with a (pseudo-bolometric) peak luminosity of log(L) = 43.47 [erg/s]. Its light curves de…
Abundance stratification in Type Ia supernovae - III. The normal SN 2003du
Masaomi Tanaka, Paolo A. Mazzali, Vallery Stanishev +3
The element abundance distributions in the ejecta of Type Ia supernova (SN) is studied by modelling a time series of optical spectra of SN 2003du until ~1 year after the explosion.…