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red giant star |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.02 sec. |
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red giant star [′red ¦ji·ənt ′stär] (astronomy) A star whose evolution has progressed to the point where hydrogen core burning has been completed, the helium core has become denser and hotter than originally, and the envelope has expanded to perhaps 100 times its initial size. 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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For example, if the red giant star that likely gave rise to the pulsar suddenly shed more than half its mass to form the new pulsar, the planet could not remain bound. Optical pictures of the cluster, taken by ground-based telescopes, detect mainly red giant stars and yellow main-sequence stars, whereas the ultraviolet image primarily spotlights hotter, less common stars that evolved from red giants by ejecting their outer atmosphere. 16 NATURE suggests the presence of a red giant star accompanied by a compact white dwarf star. |
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