Results 131 to 140 of about 727,921 (273)
Preliminary Spectral Analysis of the Type II Supernova 1999em [PDF]
, 2000 We have calculated fast direct spectral model fits to two early-time spectra of the Type II plateau SN 1999em, using the SYNOW synthetic spectrum code. The first is an extremely early blue optical spectrum and the second a combined Hubble Space Telescope
E. Baron +21 more
semanticscholar +1 more source
Odessa Astronomical Publications, 2017 The light emission (“glow”) of cold dusty plasma of the remnant of SN 1987A was confirmed by the Hubble Space Telescope observations on 7th January, 1995.
D. N. Doikov, S. M. Andrievsky
doaj +1 more source
Neutrino annihilation in Type II supernovae
The Astrophysical Journal, 1987 Neutrino-antineutrino annihilation into electrons and positrons can deposit > 1051 ergs above the neutrino- sphere of a Type II supernova. All species of neutrino contribute roughly equally to the deposited energy. This process, which appears not to have been included in numerical calculations of supernova explosions, may help to drive off the stellar ...
Jeremy Goodman +2 more
openaire +1 more source
Models of Type II Supernova Explosions [PDF]
Highlights of Astronomy, 1986 Present stellar evolution codes predict that stars with He-core masses above approximately 2 M⊙, corresponding to main sequence masses of at least 8 M⊙ burn carbon non-violently. After hydrostatic core carbon burning all those stars contain O-Ne-Mg cores but their further evolution is strongly dependent on the stellar entropy and thus on the main ...
openaire +1 more source
SN 2021wvw: A Core-collapse Supernova at the Subluminous, Slower, and Shorter End of Type IIPs
The Astrophysical JournalWe present detailed multiband photometric and spectroscopic observations and analysis of a rare core-collapse supernova, SN 2021wvw, that includes photometric evolution up to 250 days and spectroscopic coverage up to 100 days postexplosion.
Rishabh Singh Teja +6 more
doaj +1 more source
Optical Photometry of Type II-P Supernova 2004dj in NGC 2403
, 2005 We present photometric data of the type II-P supernova (SN) 2004dj in NGC 2403. The multicolor light curves cover the SN from $\sim$ 60 to 200 days after explosion, and are measured with a set of intermediate-band filters that have the advantage of ...
Barbon R. +12 more
core +2 more sources
Erratum - Photometric Observations of the Bright Type-II Supernova 1980K in NGC6946 [PDF]
, 1982 R. Buta
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Type II supernovae at high redshifts
, 1999 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-like). We then used these template light curves to evaluate the possibility of detecting SNe II at different redshifts.
Chugai, Nikolai +2 more
openaire +2 more sources
Spectral Modeling of Type II Supernovae [PDF]
AIP Conference Proceedings, 2007 Using models of the SN~IIP 2005cs, we show that detailed spectral analysis can be used to determine reddening and abundances.
openaire +2 more sources
The Astrophysical JournalSN 2023ixf is one of the most well-observed core-collapse supernovae in recent decades, yet there is inconsistency in the inferred zero-age main-sequence (ZAMS) mass M _ZAMS of its progenitor. Direct observations of the pre-supernova (SN) red supergiant (
Qiliang Fang +8 more
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