References of "Ledoux, Paul"
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See detailVibrational stability of G plus modes towards non-radial oscillations for solar models
Noels-Grötsch, Arlette ULiege; Gabriel, Maurice ULiege; Boury, A. et al

in Mémoires de la Societe Royale des Sciences de Liège (1975), 8

The vibrational stability of solar models towards g plus modes has been studied from the Zero Age Main Sequence (ZAMS) up to the age of 5 billion yr. The nuclear energy contribution to instability is ... [more ▼]

The vibrational stability of solar models towards g plus modes has been studied from the Zero Age Main Sequence (ZAMS) up to the age of 5 billion yr. The nuclear energy contribution to instability is calculated with the effective sensitivity of the reactions to change of temperature. The perturbation of convective terms is taken from an extension for nonradial oscillations of Unno's theory. The ZAMS model and the present sun are stable. However, for intermediate ages, models are unstable with respect to the lowest modes due to the effects of nuclear reactions. If, moreover, the mechanical effects of convection are taken into account, all models are unstable. However their theory is uncertain enough to require caution. [less ▲]

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See detailMagnetic Stars
Ledoux, Paul ULiege; Renson, Pierre ULiege

in Annual Review of Astronomy and Astrophysics (1966), 4

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See detailStellar Stability
Ledoux, Paul ULiege

in Handbuch der Physik = Encyclopedia of Physics (1958), 51

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See detailVariable Stars
Ledoux, Paul ULiege; Walraven, Théodore

in Handbuch der Physik = Encyclopedia of Physics (1958), 51

Introduction General remarks Historical background and development Discovery and observations Theory Observational data Cepheids and RR Lyrae stars β Cephei stars Long-period variable stars The RV Tauri ... [more ▼]

Introduction General remarks Historical background and development Discovery and observations Theory Observational data Cepheids and RR Lyrae stars β Cephei stars Long-period variable stars The RV Tauri stars and yellow semiregular variables The red semiregular and irregular variables The explosive variable stars The R Coronae Borealis stars RW Aurigae and T Tauri stars The spectrum and magnetic variables Stars with extremely rapid light variations Theory General equations Equation of continuity (Conservation of mass) Equation of motion (Conservation of momentum) Conservation of energy Linearized equations Radial oscillations of a gaseous sphere under its own gravitation Non-radial oscillations of a gaseous sphere under its own gravitation Non-linear radial oscillations Progressive waves and shock waves Interpretation and applications of the theory The periods Origin and maintenance of finite oscillations The correlation between the amplitudes and the phases of the - velocity and light curves The asymmetry Atmospheric phenomena The continuous spectrum The line spectrum Bibliography [less ▲]

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See detailThe Nonradial Oscillations of Gaseous Stars and the Problem of Beta Canis Majoris.
Ledoux, Paul ULiege

in Astrophysical Journal (1951), 114

The general characteristics of the nonradial oscillations of a rotating star are summarized and compared with the observations of β Canis Majoris. It is shown that the existence of two periods very close ... [more ▼]

The general characteristics of the nonradial oscillations of a rotating star are summarized and compared with the observations of β Canis Majoris. It is shown that the existence of two periods very close to each other as well as a phase shift of a quarter-period between the broadening of the Unes and the corresponding radial velocity can be accounted for if the oscillation corresponds to a spherical harmonic of degree 2 in a rotating star. However, for free oscillations, the sign of the phase shift is opposite to the one observed when the periods are in the correct ratio, and vice versa. Forced oscillations are briefly discussed, and, although they offer a possibility of removing this discrepancy, a quantitative analysis presents difficulties due to the proximity of the hypothetical companion. [less ▲]

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See detailSur la structure interne des étoiles
Ledoux, Paul ULiege

in Ciel et Terre (1948), 64

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See detailOn the Radial Pulsation of Gaseous Stars
Ledoux, Paul ULiege

in Astrophysical Journal (1945), 102

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See detailRadial Pulsations of Stars
Ledoux, Paul ULiege; Pekeris, C.-L.

in Astrophysical Journal (1941), 94

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See detailLe profil des raies d'absorption dans une atmosphère stellaire stratifiée
Swings, Polydore ULiege; Ledoux, Paul ULiege

in Bulletin de la Société Royale des Sciences de Liège (1938), 7(3-4), 179-187

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