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| Paper: |
Lithium Abundance in NGC 3680 |
| Volume: |
154, Cool Stars, Stellar Systems and the Sun: Tenth Cambridge Workshop |
| Page: |
947 |
| Authors: |
Pasquini, L.; Randich, S.; Pallavicini, R. |
| Abstract: |
In the framework of a long-term program aimed at studying lithium abundance in solar stars belonging to intermediate and old clusters, we present the preliminary analysis of high resolution observations of 21 stars belonging to the intermediate age cluster NGC 3680. % The targets span over the whole cluster colour-magnitude % diagram. The targets range from the main sequence turnoff through the sub-giant branch. The cluster shows a clear Li-dip, and no evidence for a spread is present among the observed main sequence stars. Particularly relevant is the finding that out of the 6 giants (which have similar magnitudes and temperatures) three show a strong lithium line, while the other three are Li depleted. |
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