Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...275...96a&link_type=abstract
Astronomy and Astrophysics, Vol.275, NO. 1/AUG(I), P. 96, 1993
Astronomy and Astrophysics
Astrophysics
26
Lithium, C Stars, Nucleosynthesis
Scientific paper
From a flux-limited sample of galactic carbon stars we estimate the contribution of such stars to the galactic abundance of lithium. The average Li production rate is found to be < mṡ7 > = 4.5 × 10-14Msunyr-1 per C star and it is mainly determined by the number of super-rich Li stars (log ɛ(Li) > 4). We show that, given a plausible choice of the IMF and the history of the star formation rate, the yield over the galactic life is MLi ≍ 30 Msun. The stellar mass loss rate and the exact Li abundance in the rich and super-rich Li stars (log ɛ(Li) > 1) are the main sources of uncertainty (since just one star, IY Hya, might well account for almost the whole current Li production in the solar neighbourhood!). Otherwise, that value only amounts to a contribution of 30% to the current galactic Li and other sources of Li besides, big-bang and cosmic rays, are thus needed to account for the present galactic abundance of this element.
Abia Carlos
Canal Ramon
Isern Jordi
No associations
LandOfFree
On the li Production by Galactic C-Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the li Production by Galactic C-Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the li Production by Galactic C-Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1489937