Ledoux criterion

E350920

The Ledoux criterion is an astrophysical stability condition that determines when a stratified stellar layer becomes convectively unstable, accounting for both temperature and composition gradients.

All labels observed (1)

Label Occurrences
Ledoux criterion canonical 2

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf astrophysical stability criterion ⓘ
convective instability criterion ⓘ
appliesTo stellar interiors ⓘ
stratified stellar layers ⓘ
appliesUnder linear perturbation theory ⓘ
assumes hydrostatic equilibrium ⓘ
local thermodynamic equilibrium ⓘ
characterizes stability against convection ⓘ
comparedWith Schwarzschild criterion ⓘ
considers composition gradient ⓘ
mean molecular weight gradient ⓘ
temperature gradient ⓘ
contrastsWith Schwarzschild criterion neglecting composition gradients ⓘ
dependsOn adiabatic temperature gradient ⓘ
gradient of mean molecular weight ⓘ
radiative temperature gradient ⓘ
field astrophysics ⓘ
stellar astrophysics ⓘ
hasEffectOn extent of convective envelopes in stars ⓘ
size of convective cores in stars ⓘ
hasFormulationType local stability condition ⓘ
hasMathematicalForm inequality involving temperature and composition gradients ⓘ
ignores magnetic fields ⓘ
viscosity ⓘ
influences chemical mixing in stars ⓘ
nucleosynthesis yields ⓘ
stellar lifetimes ⓘ
instabilityCondition layer convectively unstable if combined temperature and composition gradients exceed adiabatic value ⓘ
moreGeneralThan Schwarzschild criterion ⓘ
namedAfter Paul Ledoux ⓘ
relatedTo semiconvection ⓘ
thermohaline instability ⓘ
relatesTo Brunt–Väisälä frequency ⓘ
stabilityCondition layer stable if stabilizing composition gradient overcomes destabilizing temperature gradient ⓘ
usedBy stellar evolution codes ⓘ
usedFor determining convective instability ⓘ
determining dynamical stability of stellar layers ⓘ
usedIn asteroseismology interpretations ⓘ
massive star evolution modeling ⓘ
mixing processes in stars ⓘ
modeling double-diffusive convection ⓘ
modeling of massive main-sequence stars ⓘ
modeling of red giant stars ⓘ
modeling semiconvective zones ⓘ
stellar evolution calculations ⓘ
stellar structure models ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Schwarzschild criterion → isSpecialCaseOf → Ledoux criterion ⓘ
Schwarzschild criterion → relatedTo → Ledoux criterion ⓘ