Friday, September 28, 2007

The Sun is Peculiarly Deficient in Lithium

According to the preprint below, the sun has a strangely low amount of Lithium.

"For example, the depletion in the
observed solar Li abundance by about a factor of 200
relative to that found in meteorites is not explained by
standard stellar evolution models. Since more physically
realistic models, calculated from basic principles, cannot
be computed yet, non-standard stellar evolution models
have to introduce free parameters to reproduce the ob-
served Li depletion"

"The Sun appears to be lithium-poor by a factor of 10 com-
pared to similar solar type disk stars"

HIP 56948: A Solar Twin With a Low Lithium Abundance

Sun's 'twin' an ideal hunting ground for alien life in New Scientist.

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