Type Ia supernova - Wikipedia, the free encyclopedia
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A Type Ia supernova is a sub-category of cataclysmic variable stars that results from the violent explosion of a white dwarf star. A white dwarf is the remnant of a star that has completed its norma...
en.wikipedia.org/wiki/Type_Ia_supernova
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These supernovae occur at the end of a massive star's lifetime, ... For Type Ia supernova, the energy comes from the run-away fusion of carbon and oxygen ... Although many supernovae have been seen in nearby galaxies, supernova explosions are relatively rare events in our own Galaxy, happening once a century or so on average.
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imagine.gsfc.nasa.gov/docs/science/know_l2/supernovae.h...
imagine.gsfc.nasa.gov/docs/science/know_l2/supernovae.html
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Beginning with the formation of solar type stars, ... Visible and near-infrared images of star forming regions show dark molecular cloud boundaries disrupted by spectacular explosions that occur during the formation process. Images made at centimeter and millimeter wavelengths penetrate into the cloud core where the...
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www.astro.utoronto.ca/~mhvk/colloquia/long.html
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One of the most energetic explosive events known is a supernova. These occur at the end of a star's lifetime, when its nuclear fuel is exhausted and it is no longer supported by the release of nuclear energy. ... There are, however, many remnants of Supernovae explosions in our galaxy, that are seen as X-ray shell...
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heasarc.gsfc.nasa.gov/docs/snr.html
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Type II supernovas occur in regions with lots of bright, young stars, ... Because Type Ia supernovas all occur in a star that has a mass of about 1.4 solar masses, they produce about the same amount of light. This property makes them extremely useful as a distance indicator - if one Type Ia supernova is dimmer than another one,
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chandra.harvard.edu/xray_sources/supernovas.html
chandra.harvard.edu/xray_sources/supernovas.html
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But other astronomers countered that 2002ic was a disguised type II supernova. These explosions occur when a massive ordinary star collapses to form a neutron star or a black hole. ... One of the most massive stars known exploded in 2007, creating an unusual type of supernova that was probably common in the early universe...
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www.newscientist.com/article/dn10883
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How stars die depends in part on their mass. Our sun, for example, will swell into a red giant before becoming a white dwarf. More massive stars explode in massive supernova explosions. ... Red supergiant stars of up to 30 solar masses are expected to explode as Type II-P supernovae, stars that form as a result of a...
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www.space.com/scienceastronomy/080407-mm-hubble-superno...
www.space.com/scienceastronomy/080407-mm-hubble-supernova.html
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; Cassiopeia A supernova remnant ... Type II supernovae are not observed to occur in elliptical galaxies, and are thought to occur in Population I type stars in the spiral arms of galaxies. Type Ia supernovae occur in all kinds of galaxies, whereas Type Ib and Type Ic have been seen only in spiral galaxies near sites of...
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hyperphysics.phy-astr.gsu.edu/hbase/astro/snovcn.html
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“In theory, some transfer of mass must occur between the companion star and the white dwarf before the explosion,” Hamuy explains, “yet no evidence has ever been found for gas around a Type Ia supernova.” ... Type Ia supernovae are important explosions in the buildup of heavy elements in the Universe.
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www.noao.edu/outreach/press/pr03/pr0307.html
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