Poster Open Access
Relation of Observable Stellar Parameters to Mass-Loss Rate of AGB Stars in the LMC
Prager, Henry;
Willson, Lee Anne;
Marengo, Massimo;
Creech-Eakman, Michelle
Mass loss in Asymptotic Giant Branch (AGB) stars has historically proven difficult to characterize accurately.
This is due to a multitude of factors such as differing composition--including chemistry, metallicity, and differences in carbon and oxygen ratios--and differences in their ongoing motion--particularly, differing pulsation modes.
In mass-loss formulations, the mass-loss rate depends on some combinations of stellar parameters, including but not limited to pulsation period, mass, and luminosity.
Using a combination of stellar models and archival data, we have been working at improving the relation between these parameters and the mass-loss rate of the stars. We have used the models and data to improve on the period-mass-luminosity and radius-mass-luminosity relations for M and C stars in both the fundamental and overtone pulsation modes. Current work is focused on accounting for any remaining sources of scatter in the relation between $\dot{M}$ and our parameters $P$, $L$, and $M$.
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- Publication date:
- February 26, 2021
- DOI:
-
- Keyword(s):
- Post main sequence cool stars stars AGB mass loss
- Meeting:
- The 20.5th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS20.5), Virtually anywhere, March 2-4, 2021
- Communities:
- License (for files):
- Creative Commons Attribution 4.0 International