Binary and Multiple Stars as Tracers of Stellar Evolution: Proceedings of the 69th Colloquium of the International Astronomical Union, held in Bamberg, F.R.G., August 31 – September 3, 1981

Front Matter....Pages i-xxx
Front Matter....Pages 1-1
Evolution of Stars in the Post-Main Sequence Stage....Pages 3-18
Disk Instabilities in Hubble-Sandage Variables?....Pages 19-22
The Frequency of Cepheid Binaries....Pages 23-26
Search for Pulsating Stars in Multiple Stellar Systems....Pages 27-31
An AD HOC Hypothesis on the Pulsation of Delta Scuti Stars....Pages 33-35
On the Internal Structure of Main-Sequence Stars....Pages 37-46
A Study of the Orbital Periods of 22 Eclipsing Binaries....Pages 47-60
On the Group Formation of Stars in Stellar Associations....Pages 61-66
The Age of the Triple System HD 165590....Pages 67-71
Properties of Relativistic Linear Stellar Models....Pages 73-78
Front Matter....Pages 79-79
Evolutionary Trends in Wide Binaries....Pages 81-103
A Note About Multiple Systems of Dense Molecular Clouds....Pages 105-108
Trapezium Type Multiple Systems and Formation of Stars....Pages 109-113
A Hypothesis on the Richness of a Galaxy in Binary Stellar Systems....Pages 115-117
A Mass-Eccentricity Correlation in Spectroscopic and Visual Binary Orbits....Pages 119-122
Photometric Investigation of Visual Binaries with a Component above the Main Sequence....Pages 123-128
On the Distribution of Young Spectroscopic Binary Stars over the Major Semiaxes of their Orbits....Pages 129-131
Observational Selection in Spectroscopic Binary Eccentricities....Pages 133-143
Double Stars: The Closest and the Most Distant Systems....Pages 145-151
The Evolutionary State of Zeta Aurigae....Pages 153-156
Front Matter....Pages 157-157
Evolution of Close Binary Stars: Observational Aspects....Pages 159-181
Statistical Properties of Algol-Type Systems....Pages 183-186
Mass Loss in Algol-Type Stars: Implication on their Evolutionary Stage....Pages 187-189
Ultraviolet Light Curves of U Geminorum and VW Hydri....Pages 191-197
Statistical Models for Close Binaries....Pages 199-204
Structure and Evolution of SV Centauri....Pages 205-216
Age Determination in CW ERI = BV 1000....Pages 217-218
Numerical Calculations for Accretion Disks in Close Binary Systems....Pages 219-230
Quasi-Simultaneous Photometric and Polarimetric Observations of T Tau and RY Tau....Pages 231-238
S Cnc as a Case Study of Classical Algol Evolution....Pages 239-259
Structural Models for Beta Lyrae-Type Disks....Pages 261-273
Evolutionary Effects in Contact Binaries....Pages 275-278
Evolutionary Possibilities and Impossibilities for Solar Type Contact Binaries in NGC 188....Pages 279-287
Origin and Evolution of Contact Binaries of W UMa Type....Pages 289-299
Some Aspects of the Evolutionary Status of W Ursae Majoris Binaries Deduced from Observational Data....Pages 301-304
A Possible Explanation of Distortions in the Light Curves of VW Cep by Starspots....Pages 305-308
The IUE Observations of W UMa....Pages 309-315
Mass Flow due to Heating in a Binary System: Application to U Cephei....Pages 317-319
The Very Unusual Ultraviolet Spectra of R Arae....Pages 321-326
On a Possible Linkage between W-Type WUMa Systems and the Short Period RSCVn-Like Binaries....Pages 327-335
Front Matter....Pages 157-157
Recent Observational Evidence on W Ursae Majoris Stars....Pages 337-342
The Time Change of the AW UMa System....Pages 343-343
The Short-Period Non-Contact Binary Systems UU Lyn and GR Tau....Pages 345-349
On the Spatial Density of W UMa Type Stars....Pages 351-370
Front Matter....Pages 371-371
Binary Stars and SS433....Pages 373-388
Observations of Secular Changes in the Kinematic Model of SS433....Pages 389-397
Time Resolved Circular Polarimetry of White Dwarf Pulsars....Pages 399-401
The Mass Distribution of White Dwarfs and Central Stars of Planetary Nebulae....Pages 403-408
Abundance Peculiarities in White Dwarf Atmospheres as a Result of Binary Evolution?....Pages 409-411
The Minimum Orbital Period of Hydrogen-Rich Cataclysmic Binaries....Pages 413-414
Remarks on the Evolutionary Status of Cataclysmic Variables....Pages 415-415
Supernovae in Binary Systems: Production of Run-Away Stars and Pulsars....Pages 417-443
An Optical Burst in Sco X-1....Pages 445-445
The Formation of Massive White Dwarfs in Cataclysmic Binaries....Pages 447-451
UV Spectroscopy of the Novalike Variable TT Arietis....Pages 453-454
The Subdwarf Eclipsing Binary LB3459 (AA DOR)....Pages 455-456
Variability of Soft X-Ray Emission of Ex Hydrae Observed with Einstein Observatory....Pages 457-466
On the Possible Short-Period Irregular Light Fluctuations of V1357 Cyg = Cyg X-1....Pages 467-472
PU Vulpeculae (Object Honda-Kuwano 1979) — A Possible Short-Period Relative of the Symbiotic Stars....Pages 473-474
DID SU UMa Undergo a Classical Nova Outburst?....Pages 475-481
Front Matter....Pages 371-371
Does the Cataclysmic Binary Z Cha Contain a Black Dwarf Secondary?....Pages 483-488
Concluding Remarks....Pages 489-498
Back Matter....Pages 499-503