Mémoires de la Société royale des sciences de Liège

6e série absorption accretion adiabatic Aizenman amplitude angular momentum approximation Astr Astron Astrophys Astrophysics atmosphere binary bump calculations Cepheids Christy cloud collapse cometary comets convective zone core Davey Demaret density discussed dynamical effective temperature eigenfunctions ejection emission lines energy envelope equation equilibrium evolution evolutionary flux galactic gravitational helium hydrogen instability instability strip integral ionization km/sec layers Ledoux Liège light curve linear luminosity magnetic field main sequence mass loss rate Mémoires Société Royale method models modes motion non-adiabatic observed obtained outer parameters period perturbation phase planetary nebulae Pol Swings problem profiles protostar pulsation radiative radius ratio recent red giant region Royale des Sciences RR Lyrae variables Sciences de Liège shell solar solution spectra spectrum spherical stars in thermal stellar Stellingwerf surface theoretical theory thermal imbalance variables variations velocity wavelength white dwarf WR stars