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Planetarni sustav oko bijelog patuljka

 
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korado
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PostPosted: Sun Dec 24, 2006 22:47    Post subject: Planetarni sustav oko bijelog patuljka Reply with quote

Planetarni sustav oko bijelog patuljka

U moru novootkrivenih planetarnih sustava evo i otkrića jednog oko sada mrtve zvijezde, bijelog patuljka.
Slično kao i kod nas, planete utječu na staze asteroida i obrušavaju ih u pravcu "sunca". U tom slučaju bijelog patuljka koji asteroid raskomada plimnom silom i onda te ostatke pretvori u pregrijani plin svojim UV zračenjem.
Astronomi su upravo otkrili takav prsten iona metala kako kruži oko bijelog patuljka:

http://space.newscientist.com/article/dn10853-white-dwarf-shreds-and-vaporises-asteroid.html

http://space.newscientist.com/article/dn8940-rocky-planets-may-circle-many-white-dwarfs.html
asteroid_dn10853-1_250.jpg


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