W. J. Maciel -
Abstract #175
AN ESTIMATE OF THE MASS LOSS RATES OF LI-RICH AGB/RGB STARS
W. J. Maciel, R. D. D. Costa, Bol. SAB. 31, no. 1, 83 (2019) We consider a large sample of AGB/RGB stars with excesses in the Li abundance in order to estimate their mass loss rates. We adopt a correlation between the Li abundances and the stellar luminosity, and used a modified version of Reimers formula, calibrated on the basis of an empirical correlation between the mass loss rate and stellar parameters. We conclude that most Li-rich stars have lower mass loss rates compared with the majority of AGB/RGB stars, which show no evidences of Li enhancements. Therefore, it appears that the Li enrichment process is not associated with an increased mass loss rate, as sometimes suggested in the literature.
