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Mass loss rates of Li-rich AGB/RGB stars

Published online by Cambridge University Press:  30 December 2019

Walter J. Macie Open the ORCID record for Walter J. Macie [Opens in a new window]  and
Roberto D. D. Costa
Walter J. Macie
Affiliation:
Astronomy Department, University of São Paulo, São Paulo, Brazil email: wjmaciel@iag.usp.br
Roberto D. D. Costa
Affiliation:
Astronomy Department, University of São Paulo, São Paulo, Brazil email: wjmaciel@iag.usp.br
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Abstract

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A sample of AGB/RGB stars with an excess of Li abundances is considered in order to estimate their mass loss rates. Our method is based on a correlation between the Li abundances and the stellar luminosity, using a modified version of the Reimers formula. We have adopted a calibration based on 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, so that the Li enrichment process is probably not associated with an increased mass loss rate.

Keywords

stars: abundancesstars: mass lossstars: AGB and post-AGB

References

Groenewegen, M. A. T., Sloan, G. C., Soszyński, I., Peterson, E. A. 2009, A&A, 506, 1277 Google Scholar
Groenewegen, M. A. T., & Sloan, G. C. 2018, A&A, 609, A114 Google Scholar
Gullieuszik, M., Groenewegen, M. A. T., Cioni, M. R. L., et al. 2012, A&A, 537, A105 Google Scholar
Maciel, W. J., & Costa, R. D. D. 2016, In: G. A. Feiden (ed.), The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, Zenodo. http://doi.org/10.5281/zenodo.59278CrossRefGoogle Scholar
Maciel, W. J., & Costa, R. D. D. 2018, AN, 339, 168 Google Scholar
van Loon, J. Th., Cioni, M. R. L., Zijlstra, A. A., Loup, C. 2005, A&A, 438, 273 Google Scholar