A test of time-dependent theories of stellar convection

2011/03/16 by T. Gastine, B. Dintrans · 2 citations
Physics and Astronomy · #Astro and Planetary Science #Astrophysics #Astrophysics and Star Formation Studies #Cepheid variable #Classical mechanics #Context (archaeology) #Convection #Coupling (piping) #Geology #Instability #Instability strip #Materials science #Mechanics #Physics #Stars #Statistical physics #Stellar, planetary, and galactic studies #Turbulence #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201116766

7 pages, 5 figures, 2 tables, accepted for publication in A&A

arxiv created 2011/03/16 · openalex publication_date 2011/03/18 · arxiv updated 2015/05/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Context. In Cepheids close to the red edge of the classical instability strip, a coupling occurs between the acoustic oscillations and the convective motions close to the surface. The best topical models that account for this coupling rely on 1-D time-dependent convection (TDC) formulations. However, their intrinsic weakness comes from the large number of unconstrained free parameters entering into the description of turbulent convection.

Citations

• Direct numerical simulations of the κ-mechanism
• Spectrum and amplitudes of internal gravity waves excited by penetrative convection in solar-type stars

Cited by

• Multidimensional realistic modelling of Cepheid-like variables – II. Analysis of a Cepheid model
• Pulsations of red supergiant pair-instability supernova progenitors leading to extreme mass loss