4 papers · 1 filter
^{56}Ni mass in type IIP SNe: Light curves and H-alpha luminosities diagnostics
A. Elmhamdi, N. N. Chugai, I. J. Danziger
We analyse late-time observations, available photometry and spectra, of a sample of type II plateau supernovae (SNe IIP). The possibility of using H luminosity at the nebular ep…
SN 1994W: evidence of explosive mass ejection a few years before explosion
Nikolai N. Chugai, Robert J. Cumming, Sergei I. Blinnikov +7
We present and analyse spectra of the Type IIn supernova 1994W obtained between 18 and 202 days after explosion. During the first 100 days the line profiles are composed of three m…
The nature of SN 1997D: low-mass progenitor and weak explosion
Nikolai N. Chugai, Victor P. Utrobin
We analyzed the spectra and light curve of the peculiar type II-P supernova 1997D to recover ejecta parameters. The optimal hydrodynamical model of SN 1997D, which meets observatio…
Type II supernovae at high redshifts
Nikolai Chugai, Sergei Blinnikov, Peter Lundqvist
A hydro code coupled with radiation transfer was applied to produce monochromatic light curves of two models of type II supernovae (SN II) simulating SN II-P and SN IIb (SN 1993J-l…