Preliminary results of the survey of the Li-I 6708-A feature in super-Li-rich stars are given. From the comparison between the observations and previous measurements in two members of this class, WX Cyg and WZ Cas, it appears that the equivalent width of the Li feature, EW(Li-I 6708-A), is not constant with time. In the long-term program attention is given to the possible variations of the Li abundance in these two and in the other super-Li rich stars and to search for the relation between EW(Li I 6708) and light variations.
Memorie della Societa Astronomica Italiana
- Pub Date:
- Asymptotic Giant Branch Stars;
- Stellar Composition;
- Spectral Line Width;
- Spectrum Analysis;
- Stellar Spectra;