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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Champagne supernova

Article Abstract:

The conventional view of astrophysicists states that thermonuclear supernova explosions occur only when the white-dwarf stars of a certain mass explode. Scientists have discovered a supernova that is way over Chandrasekhar mass, the maximum mass that a white dwarf star can have, which would require a reworking of the model.

Author: Branch, David
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
Beliefs, opinions and attitudes, Astrophysicists

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The type la supernova SNLS-03D3bb from a Super-Chandrasekhar-mass white dwarf star

Article Abstract:

A study shows that the high-redshift supernova SNLS-03Dbb has an exceptionally high luminosity and low kinetic energy that both imply a Super-Chandrasekhar progenitor. It provides an explanation for the observed trend that overluminous type Ia suernovae occur only in 'young environments.'

Author: Sullivan, Mark, Ellis, Richard S., Howell, D. Andrew, Le Borgne, Damien, Carlberg, Raymond G., Guy, Julien, Balam, David, Basa, Stephane, Fouchez, Dominique, Hook, Isobel M., Nugent, Peter E., Hsiao, Eric Y., Neill, James D., Pain, Reynald, Perrett, Kathryn M., Pritchet, Christopher J., Conley, Alexander J.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006

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Tycho's mystery companion

Article Abstract:

The appearance of the "star" known as Tycho's supernova refuted the Aristotelian immutability of the heavens. These supernovas make exquisite 'standard candles' for cosmology as they can be seen from afar and their apparent peak brightness can be used to reliably infer their distance.

Author: Branch, David
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
Astronomical research, Cosmology

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Subjects list: Research, United States, Supernovae, Supernovas, Dwarf stars
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