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Peculiar, Low Luminosity Type II Supernovae: Low Energy Explosions in Massive Progenitors?
L. Zampieri, A. Pastorello, M. Turatto +5
A number of supernovae, classified as Type II, show remarkably peculiar properties such as an extremely low expansion velocity and an extraordinarily small amount of Ni in t…
Hypernovae and their Nucleosynthesis
Ken'ichi Nomoto, Keiichi Maeda, Hideyuki Umeda +3
We review the characteristics of nucleosynthesis in 'Hypernovae', i.e., core-collapse supernovae with very large explosion energies ($ \gsim 10^{52} $ ergs). The hypernova yields s…
Early-Phase Spectra of "Hypernova" SN 2002ap
K. Kinugasa, H. Kawakita, K. Ayani +6
The spectral evolution of the peculiar SN Ic 2002ap during the first 40 days is presented. The spectra display very broad absorption features, which are typical of "hypernovae". Th…
The Type Ic Hypernova SN 2002ap
P. A. Mazzali, J. Deng, K. Maeda +31
Photometric and spectroscopic data of the energetic Type Ic supernova (SN) 2002ap are presented, and the properties of the SN are investigated through models of its spectral evolut…
The Type IIn SN 1995G: Interaction with the CSM
A. Pastorello, M. Turatto, S. Benetti +7
We present the photometric and spectroscopic evolution of the type IIn SN 1995G in NGC 1643, on the basis of 4 years of optical and infrared observations. This supernova shows very…