9 papers
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…
Supernova Spectra
M. Turatto
In this paper are summarized the main advances of the last years in the field of SN spectra . The arguments against a monodimensional sequence for SNIa are discussed as well as the…
The tetra-lobed planetary nebula NGC 1501
Franco Sabbadin, Stefano Benetti, Enrico Cappellaro +1
Direct imagery and long-slit, spatially resolved echellograms of the high excitation planetary nebula NGC 1501 allowed us to study in detail the expansion velocity field, the physi…
The Properties of Hypernovae: SNe Ic 1998bw, 1997ef, and SN IIn 1997cy
K. Nomoto, P. A. Mazzali, T. Nakamura +6
We discuss the properties of the hyper-energetic Type Ic supernovae (SNe Ic) 1998bw and 1997ef and Type IIn supernova (SN IIn) 1997cy. SNe Ic 1998bw and 1997ef are characterized by…
Tomography of the low excitation planetary nebula NGC 40
F. Sabbadin, E. Cappellaro, S. Benetti +2
Spatially resolved, long-slit echellograms at different position angles of the bright, low excitation planetary nebula NGC 40 indicate that, the higher is the gas excitation, the f…
SNIa light curves and radioactive decay
E. Cappellaro, P. A. Mazzali, S. Benetti +4
The absolute V light curves of 5 SNe Ia, selected to represent the known range of absolute luminosities at maximum for this class of objects, are presented. Comparison of the long…