Calibrating the mixing-length parameter for a red giant envelope

S. M. Asida*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Two-dimensional hydrodynamical simulations were made to calibrate the mixing-length parameter for modeling red giants' convective envelopes. As was briefly reported in a recent paper by Asida & Tuchman, a comparison of simulations starting with models integrated with different values of the mixing-length parameter has been made. In this paper more results are presented, including tests of the spatial resolution and large-eddy simulation terms used by the numerical code. The consistent value of the mixing-length parameter was found to be 1.4 for a red giant of mass 1.2 M⊙, core mass 0.96 M⊙, luminosity 200 L⊙, and metallicity Z = 0.001.

Original languageAmerican English
Pages (from-to)896-906
Number of pages11
JournalAstrophysical Journal
Volume528
Issue number2 PART 1
DOIs
StatePublished - 10 Jan 2000
Externally publishedYes

Keywords

  • Convection
  • Methods: numerical
  • Stars: AGB and post-AGB
  • Stars: atmospheres
  • Stars: interiors

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