Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Carbon-to-oxygen ratios of white dwarf planetesimals 13th April 2016, 5:10 pm | |
| Still no evidence for the existence of carbon planets... Wilson et al. "Carbon to oxygen ratios in extrasolar planetesimals" http://arxiv.org/abs/1604.03104 - Quote :
- The range of C/O of the planetesimals is consistent with that found in the Solar System, and appears to follow a bimodal distribution: a group similar to the CI chondrites, with log(<C/O>)=-0.92, and oxygen-rich objects with C/O less than or equal to that of the bulk Earth. The latter group may have a higher mass fraction of water than the Earth, increasing their relative oxygen abundance.
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tommi59 Jovian
Number of posts : 593 Age : 46 Location : Baile Atha Cliath Registration date : 2010-07-31
| Subject: Re: Carbon-to-oxygen ratios of white dwarf planetesimals 14th April 2016, 4:15 am | |
| 55 Cancri e we can not count for example? | |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: Carbon-to-oxygen ratios of white dwarf planetesimals 14th April 2016, 4:33 pm | |
| God only knows what's going on with 55 Cnc e. It seems that every subsequent result adds something to contradict the previous one, I really don't yet feel there is a consistent picture of what the planet is like that takes into account all the various lines of evidence. | |
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| Subject: Re: Carbon-to-oxygen ratios of white dwarf planetesimals | |
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