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

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<oai_dc:dc xmlns:dc="" xmlns:oai_dc="" xmlns:xsi="" xsi:schemaLocation="">
  <dc:creator>Prager, Henry</dc:creator>
  <dc:creator>Willson, Lee Anne</dc:creator>
  <dc:creator>Marengo, Massimo</dc:creator>
  <dc:creator>Creech-Eakman, Michelle</dc:creator>
  <dc:description>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 $M$.</dc:description>
  <dc:subject>Post main sequence cool stars</dc:subject>
  <dc:subject>mass loss</dc:subject>
  <dc:title>Relation of Observable Stellar Parameters to Mass-Loss Rate of AGB Stars in the LMC</dc:title>
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