Fundamental Problems in the Theory of Stellar Evolution

This volume presents the Proceedings of International Astronomical Union Symposium No.93 on Fundamental Problems in the Theory of Stellar Evolution. It contains the texts of all the invited papers, the abstracts of the contributed papers that were read by one of the attending author(s), and edited discussions. Only one abstract is included in this volume from each author who attended, and the abstracts of papers which were read on behalf of absent author(s) are not included. Those papers, which were read but are not included in the volume, are indicated by asterisks in the table of contents. The meeting took place at the University Hall, Kyoto University, Kyoto, Japan from July 22 to 25, 1980, and was sponsored by IAU Commission 35 on Stellar Constitution and co-sponsored by the IAU Commission 42 on Close Binary Stars. Locally, the Symposium was hosted by the Research Institute for Fundamental Physics, Kyoto University with encouragement from the Astronomical Society of Japan. Financial support for the meeting was provided by the IAU, the Japan Society for the Promotion of Sciences, the Japan World Exposition Commemorative Fund, and the Yamada Science Foundation. Preparation for the Symposium and editing of the Proceedings were supported in part by Scientific Research Fund of Japanese Ministry of Education, Science and Culture (530603).

Introductory remarks.- Symposium on Fundamental Problems in the Theory of Stellar Evolution.- Session 1: Star Formation in Rotating and Magnetic Gas Clouds.- Review papers.- The Effects of Rotation during Star Formation.- The Role of Magnetic Fields in the Formation of Stars.- Contributed papers.- Quasistatic Contraction of Magnetic Protostars due to Magnetic Flux Leakage.- Role of Grains in the Drift of Plasma and Magnetic Field in Dense Interstellar Clouds.- On the Correspondence of OH/H2O Maser Sources to the Stage of Proto-Star Formation.- On the Star Formation in Early Stage of Galactic Evolution.- On the Structure and Evolution of Massive Interstellar Clouds.- Chain-Reacting Thermal Instability and its Implication on Star-Formation in Interstellar CO Clouds.- Global Structure of Interstellar Medium and Star Formation Rate.- Session 2: Pre-Main-Sequence Evolution and Formation of Binary Stars.- Review papers.- The Formation of Binary Stars.- Pre-Main-Sequence Stellar Evolution (read by A.G. Massevitch).- Contributed papers.- Age Spread of the Orion Nebular Stars.- Monitor Observations of the Orion SiO Maser.- An Observational Approach to the Early Stages of Stellar Evolution.- Fragmentation of Collapsing Gas Clouds.- Accumulation of a Rapidly Rotating Protostar and the Formation of an Associated Nebula as a Result of Angular Momentum Transport by Turbulent Friction.- Fragmentation of Isothermal Gas Clouds.- Numerical Studies of the Fission Hypothesis for Rotating Polytropes.- Pre-Main-Sequence Evolution of Close Binaries with Mass Transfer.- Chromospherical and Coronal Phenomena in Young Contracting Stars (read by A.V. Tutukov.- Session 3: Origin of the Solar System Chairman.- Review paper.- Formation of the Planets.- Contributed papers.- On the Angular Momentum of Presolar Nebula (read by A.V. Tutukov).- Magnetic Braking, the Solar Nebula and the Cometary Cloud.- Growth and Sedimentation of Dust Grains in the Primordial Solar Nebula.- Formation of the Giant Planets.- Dissipation of the Primordial Terrestrial Atmosphere due to Irradiation of Solar EUV.- Session 4: Mass Exchange on Close Binary Stars and the Effect on Stellar Evolution.- Review Papers.- Evolution of Close Binaries.- The Formation of Compact Objects in Binary Systems.- Contributed papers.- The Rapidly Rotating Giants of the FK Comae-type.- RX Cassiopeiae -- A Binary System with Rapid Evolution (read by A.G. Massevitch).- Patterns of Mass Flow in Close Binaries Based on Ultraviolet Observations (read by K. Nomoto).- Rotation and the Evolution of the Mass-Accreting Component in Close Binary Systems.- Contact Binary Evolution and Angular Momentum Loss.- Non-conservative Evolution of Massive O-Type Close Binaries with Galactic and with Magellanic Cloud Chemical Abundances.- Asymmetric Supernova Explosions: The Missing Link between Wolf-Rayet Binaries, Run-Away OB Stars and Pulsars.- Evolution of Low Mass Binaries under the Influence of Gravitational Radiation.- Blue Stragglers as Long-Lived Stars.- Session 5: Mass-Accretion onto Compact Stars and Resultant Explosive Phenomena and Nucleosynthesis.- Review papers.- Generalized Theory of Shell Flash and Accreting White Dwarfs.- Thermonuclear Processes on Accreting Neutron Stars.- Contributed papers.- Shell-Flashes on Accreting Neutron Stars and Mode Profiles of Type-I X-Ray Bursts.- On Hydrogen Burning in High Temperature and Density Evolution (R-P Process) (read by A.V. Tutukov).- Formation of Heavy Elements at the Outbursts from the Neutron Stars.- The Current Status of Neutron Star Cooling Theories.- Cyclotron Line Emission from Accretion onto a Magnetized Neutron Star.- Effects of Nuclear Burning on X-Ray and UV Emission from Accreting Degenerate Dwarfs.- Comptonized X-Ray Emission from the Accretion Disk around a Massive Black Hole.- Session 6: Effect of Rotation and Magnetic Field in Stellar Evolution.- Review papers.- Rotation and Stellar Evolution.- Magnetic Fields and Stellar Evolution.- Contributed papers.- Progress towards a Quasistatic Two Dimensional Rotation Code (read by K. Nomoto).- Concave Hamburger Equilibrium of Rotating Bodies.- Rapidly Rotating and Fully General Relativistic Polytropes.- The Influence of Rotation on Horizontal Branch Stars and on RR Lyrae Pulsational Properties.- Can Stellar Atmospheres be in Quasi-Static Equilibrium in the Presence of Magnetic Fields?.- Influence of Convection on the Pulsational Stability of Stars.- A Statistical Theory of Non-local Convection in Chemical Inhomogeneous Star (read by H. Kimura).- Viscosity, Thermal and Electrical Conductivities in Turbulent Convection.- On the Presence of Turbulent Diffusion in Stars and its Effect on Stellar Evolution.- On the Number Ratio of Horizontal Branch Stars to Red Giant Stars in Globular Clusters.- Session 7: Supernova Explosions Leading To the Formation of Neutron Stars and Black Holes.- Review papers.- Supernovae: Progenitor Stars and Mechanisms.- Supernova Explosions in Degenerate Stars — Detonation Deflagration and Electron Capture—.- Contributed papers.- A New Approach to the Analytic Evaluation of Thermonuclear Reaction Rates.- Enhancement of Thermonuclear Reaction Rate due to Strong Screening.- The Neutronization of the Matter and Hydrodynamic Instability at Final Stages of Stellar Evolution.- Non-Explosive Collapse of White Dwarfs (read by E. Schatzman).- Stellar Collapse and Nascent Neutron Stars.- General Relativistic Collapse of an Axially Symmetric Star Leading to the Formation of Neutron Stars and Black Holes.- Stability against Radial Perturbations of Slowly Rotating Neutron Stars.- Session 8: General Discussions.- Rapporteur talks.- Concluding Remarks.- Comments and Impressions.- General discussions.- (included in general discussions).- Author Index.