The lithium in weak G-band stars

Details The lithium in weak G-band stars The lithium in weak G-band stars

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..73..251p&link_type=abstract

Astrophysics and Space Science, vol. 73, no. 1, Nov. 1980, p. 251-257.

Astronomy and Astrophysics

Astrophysics

4

Carbon, Lithium, Main Sequence Stars, Stellar Spectra, Abundance, Globular Clusters, Nitrogen

Scientific paper

Available data on Li abundance and CH band weakness in weak G-band stars indicates the existence of a linear relationship between Li and carbon abundance. Weak G-band stars with a high Li abundance are least depleted in C, and weak G-band stars with a relatively low Li abundance have a very low abundance of C. Li production seems to be a necessity after the star leaves the main sequence and reaches the giant branch, probably by spallation reactions on the surface. Then mixing due to meridional circulation on the giant branch might bring out the CN-processed material to the surface, at the same time destroying the surface Li. Thus, both C and Li abundances are depleted together.

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