4563250
doi
10.5281/zenodo.4563250
oai:zenodo.org:4563250
user-coolstars20half
Baraffe, Isabelle
University of Exeter
Dethero, Mary Geer
Georgia State University
Deep mixing due to convective penetration during the red giant branch luminosity bump
Pratt, Jane
Georgia State University
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Stellar Hydrodynamics
Red Giant Branch Luminosity Bump
Convection
Convective Overshooting
Stellar Evolution
<p>To interpret the wide variation in observed chemical abundances during the red giant phase of evolution, it is necessary to develop theoretical and computational modeling of convection under realistic stellar conditions. In this contribution we quantify mixing due to convective penetration in the deep stellar interior through global hydrodynamic simulations. We produce the evolutionary track of a 3 solar mass red giant using the 1D stellar evolution code MESA. We select models from this evolutionary track at different points in time, beginning at the first dredge-up and spanning the brief period of time of the red giant luminosity bump. The realistic stratification in density, temperature, and luminosity of these models is then used to produce global simulations of the stellar interior with the multi-dimensional, time implicit, fully compressible, hydrodynamic, implicit large eddy simulation code MUSIC. We compare the changing amount of mixing using a sophisticated enhanced diffusion model for convective penetration (Pratt et al 2017), targeted for one dimensional stellar evolution calculations.</p>
Zenodo
2021-02-26
info:eu-repo/semantics/conferencePoster
4563249
user-coolstars20half
1614342435.565266
1903017
md5:f68b629128c1746ef21e6e671181ec9a
https://zenodo.org/records/4563250/files/pratt_coolstars2021.pdf
376114
md5:4df8d4f6bb6dab7d8e2b69d42e679253
https://zenodo.org/records/4563250/files/pratt2021_thumb.png
public
10.5281/zenodo.4563249
isVersionOf
doi