Extrasolar terrestrial planets are carbon-poor

View previous topic View next topic Go down

Extrasolar terrestrial planets are carbon-poor

Post by Lazarus on 12th November 2008, 7:51 am

Six White Dwarfs with Circumstellar Silicates

The material from the disrupted asteroids orbiting these white dwarfs is poor in carbon, which suggests extrasolar terrestrial planets typically form from carbon-poor material. So much for carbon planets?
avatar
Lazarus
dG star
dG star

Number of posts : 2844
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: Extrasolar terrestrial planets are carbon-poor

Post by Sirius_Alpha on 12th November 2008, 4:41 pm

Could it be an issue with the availability of carbon materials in the protoplanetary disks of these white dwarfs when they were coming in their main sequence? What are the odds that the initial disks that the disrupted planets formed from had high amounts of carbon like at Beta Pictoris? Surely, the carbon in the Beta Pictoris disk will be incorporated into the planets. If sometime in the distant future, when Beta Pictoris is a white dwarf, will any disrupted planets show carbon in their spectra?

_________________
Caps Lock: Cruise control for 'Cool'!
avatar
Sirius_Alpha
Admin
Admin

Number of posts : 3494
Location : Earth
Registration date : 2008-04-06

View user profile http://solar-flux.forumandco.com/

Back to top Go down

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum