H II region

H II region
Nettpris
Nettpris
79,- 79,-
Førpris 99,- Spar 20,-
Førpris 99,- Spar 20,-
E-Bok
Format E-Bok
Filformat ePUB
Forlag BookOnDemand
Språk Engelsk
ISBN 9785510108835
Sider 255
Emne General encyclopaedias

Om H II region

High Quality Content by WIKIPEDIA articles! An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived, blue stars forged in these regions emit copious amounts of ultraviolet light, ionizing the surrounding gas. H II regions-sometimes several hundred light-years across-are often associated with giant molecular clouds in which star formation takes place, and from which the stars that produce the H II region were born. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.


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