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type I supernova |
Also found in: Wikipedia, Hutchinson | 0.04 sec. |
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type I supernova [′tīp ¦wən ¦sü·pər′nō·və] (astronomy) A member of a class of supernovae that lack hydrogen in their spectra and have relatively regular light curves. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| But nearly all have relied on X-ray emissions from iron, which can enter the intracluster medium in two ways--the explosion of many massive stars as type II supernovas or the detonation of far fewer, lower-mass stars as type I supernovas. The hydrogen emission had been replaced by helium, a characteristic of a type I supernova known as Ib. As a result, Type I supernovas -- which suffuse the interstellar medium with iron-rich gas -- dictated the chemical composition of new stars, the researchers report. |
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