Results 141 to 150 of about 695 (169)
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1974
The supernova of 1923 in M83 has only a partial, but continuous light curve (Figure 1) based entirely on Lampland’s assiduous observations at Lowell Observatory from May 5 to July 1, 1923 (Lampland, 1936). There are only three other published observations from Harvard; the SN was invisible on patrol camera plates (m> 14.0 and m> 13.5) on April 6 and 23
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The supernova of 1923 in M83 has only a partial, but continuous light curve (Figure 1) based entirely on Lampland’s assiduous observations at Lowell Observatory from May 5 to July 1, 1923 (Lampland, 1936). There are only three other published observations from Harvard; the SN was invisible on patrol camera plates (m> 14.0 and m> 13.5) on April 6 and 23
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Supernova 1993J as a spectroscopic link between type II and type Ib supernovae
Nature, 1993Supernova 1993J in the nearby galaxy M81 is one of the closest - and hence brightest - supernovae to be witnessed this century. The early spectrum of SN1993J showed the characteristic hydrogen signature of type II supernovae, but its subsequent evolution is atypical for this class of supernova. Here we present optical and infrared spectra of SN1993J up
D. A. Swartz +4 more
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Nucleosynthesis in type I and type II supernovae
Advances in Space Research, 1984Abstract Nucleosynthesis in type I and type II supernovae is reviewed in the framework of existing models and observational constraints. Major observational constraints for type II supernova (SNII) are the existence of neutron stars in the center of SNII remnants and the observation of hydrogen lines in SNII spectra. The first fact is interpreted by
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On the Frequency of Type I and Type II Supernovae
1974I would like to present some simple considerations concerning the frequency of supernovae of both types and the mass range of their stellar progenitors which I have tried to deduce from the statistics given by Tammann (1970) for Sb and Sc galaxies only, and from some other data of other authors (Bertola and Sussi, 1965; Barbon, 1968) I will just ...
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Peculiar-velocity cosmology with Types Ia and II supernovae
Monthly Notices of the Royal Astronomical Society, 2021Benjamin E Stahl +2 more
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Synthetic observables for electron-capture supernovae and low-mass core collapse supernovae
Monthly Notices of the Royal Astronomical Society, 2021Alexandra Kozyreva +2 more
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A generalized semi-analytic model for magnetar-driven supernovae
Monthly Notices of the Royal Astronomical Society, 2023Conor M B Omand +2 more
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Luminous Type II supernovae for their low expansion velocities
Monthly Notices of the Royal Astronomical Society, 2020Osmar Rodríguez +2 more
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