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astro-ph1994
A non-LTE study of Li I lines in AGB stars
Dan Kiselman, Bertrand Plez
We study the formation of Li lines in a case study of an S-type AGB star in the SMC. AGB stars may be important providers of Li to the interstellar medium. Abundance analysis o…
astro-ph1994
Boron in the Extreme Pop II Star HD 140283 and the Production of Light Elements in the Early Galaxy
B. Edvardsson, B. Gustafsson, S. G. Johansson +4
Using observations of the 2496.7 A B I line with the HST GHRS at a nominal resolution of 90,000, we have found the abundance of boron of HD 140283 to be log epsilon_B (= 12 + log (…
astro-ph1994
A NLTE study of neutral boron in solar-type stars
Dan Kiselman
The formation of the resonance lines of neutral boron in solar-type stellar atmospheres is investigated taking into account effects of departures from local thermodynamic equilibri…