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protogalaxy |
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protogalaxy [‚prōd·ō′gal·ik·sē] (astronomy) A clump of matter in an early stage of galaxy formation in which the matter has started to collapse under its own gravity to form a galaxy. 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 even as the stars and quasars within these protogalaxies began to light up, the universe as a whole remained dark. Because intense star birth may be a signpost of the formation of galaxies, WIRE will also search for fledgling galaxies, known as protogalaxies. The evidence strongly supports the notion that damped Lyman-alpha systems represent a population of protogalaxies in the early universe, Djorgovski says. |
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