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Paper: Pulsation and Mass Loss of AGB Stars in the Magellanic Cloud Clusters NGC 1978 and NGC 419
Volume: 445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants
Page: 127
Authors: Kamath, D.; Wood, P. R.; Soszyński, I.; Lebzelter, T.
Abstract: We present results of a study of asymptotic giant branch (AGB) stars in the Magellanic Cloud clusters NGC 1978 and NGC 419. The aim of this work is to use pulsation analysis as a means to study mass-loss on the AGB. We derive pulsation masses for the AGB variables, from the lowest luminosity O-rich variables to the most evolved infrared sources. Our studies show that reliable pulsation masses can be determined for AGB stars. We also use non-linear pulsation models to fit the highly evolved AGB stars. Our models show that a substantial amount of mass loss has occurred during the AGB evolution of these stars. We compare our results to commonly-used mass-loss formulae such as those of Vassiliadis & Wood (1993) and Blöcker (1995).
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