Late stages of stellar evolution : symposium No. 66 (Copernicus Symposium V), held in Warsaw, Poland, 10-12 September 1973

lAD Symposium No. 66 was held in Warsaw from September 10th to September 12th 1973, in connection with the Extraordinary General Assembly of the lAD. It was arranged by lAD Symposium No. 35 and the Scientific Organising Committee con­ sisted of A. G. Massevitch (Chairman), A. V. Tutukov (Secretary), H. M. van Horn, N. Dallaporta, J. P. Ostriker, B. Paczynski, G. Ruben, E. Schatzman, R. J. Tayler and A. Weigert. This volume contains the full texts of all of the invited papers presented at the Symposium, apart from that delivered by R. P. Kraft, which is published in abstract because it is appearing in full elsewhere. In addition the short communications given at the Symposium are published in abstract. I attempted to take down all of the dis­ cussion as it occurred and all contributors to the discussion were asked to provide copies of their remarks. From these sources an edited version of the discussion has been produced. As the final version has not been seen by the contributors, I should be held responsible for all errors. At Warsaw, some of the short communications did not immediately follow the invited paper to which they referred. In the printed version they and any discussion relating to them are placed in the most logical position. A small number of short communications, which were circulated in abstract at Warsaw but which were not delivered orally, are also included in the published version. Front Matter....Pages I-IX Nuclear Reactions and Neutrinos in Stellar Evolution....Pages 1-14 Screening Factors in Late Stellar Evolution....Pages 15-16 The Explosive r -Process....Pages 17-17 Hot CNO-Ne Cycles....Pages 18-18 Discussion Following Paper by Arnett....Pages 19-19 Circulation and Mixing....Pages 20-40 On the Mixing of the Matter in Semiconvective Regions of Massive Stars....Pages 41-41 Discussion Following Paper by Kippenhahn....Pages 42-42 Non-Explosive Mass Loss....Pages 43-53 Mass Ejection by Radiation Pressure....Pages 54-55 Stellar Envelopes at Supercritical Luminosity....Pages 56-56 Discussion Following Paper by Woolf....Pages 57-58 Review of IAU Symposium No. 59 on Stellar Instability and Evolution, Canberra, August 1973....Pages 59-60 Discussion Following Paper by Iben....Pages 61-61 Evolution of Stars with M ≤ 8 M ⊙ ....Pages 62-69 The URCA Process in Convective Cores....Pages 70-70 Discussion Following Paper by Paczyński....Pages 71-72 Evolution of Stars with M ≥ 8 M ⊙ ....Pages 73-92 Stability Properties of Stars with Central He Burning....Pages 93-94 The Effect of Changing the Initial Chemical Composition on the Evolution of a 20 M ⊙ Star....Pages 95-95 Evolution of Massive Close Binaries....Pages 96-97 On the Evolutionary Stage of V448 Cyg....Pages 98-98 The Investigation of Open Clusters by Means of Theoretical HR-Diagrams....Pages 99-99 Integral Parameters and the Total Mass of Open Clusters....Pages 100-100 Mass Loss from Stars and the Location of Blue Supergiants in the HR Diagram....Pages 101-101 Supergiant Stars as Chemical Composition Indicators....Pages 102-102 Discussion after Paper by Massevitch....Pages 103-104 Mixing between the Core and the Envelope in Stars with Deep Convection Zones....Pages 105-121 Evolutionary Abundance Changes in the Envelopes of Moderate Mass Red Supergiants....Pages 122-122 Surface Abundances Resulting from Deep Mixing....Pages 123-124 Mixing in Stars....Pages 125-126 Interpretation of Carbon Stars....Pages 127-127 Discussion after Paper by Sugimoto....Pages 128-129 Presupernovae....Pages 130-148 Do Pulsars Make Supernovae?....Pages 149-149 Evolution of Massive Stars from Helium Burning to the Start of Neutronization....Pages 150-150 On the Final Fate of Differentially Rotating Degenerate Configurations....Pages 151-151 The Explosion of a Rotating Magnetized Star as a Supernova....Pages 152-152 Iron Core Collapse in 10 to 30 M ⊙ Stars and the Effect of μ Neutrinos....Pages 153-153 Discussion after Paper by Nadyozhin....Pages 154-154 The Theory of Novae and Nova-Like Systems....Pages 155-167 Possible Progenitors of Some Nova-Like Variables....Pages 168-170 Discussion after Paper by Faulkner....Pages 171-171 Observational Data on Novae and Supernovae....Pages 172-184 Early Photographic Observations of Red and Infrared Features in the Spectrum of SN 1972e....Pages 185-186 The Reliability of Photometric and Spectroscopic Data of Novae....Pages 187-188 On the Frequencies of Type I and Type II Supernovae....Pages 189-190 Contracting Envelopes of Novae after Outbursts....Pages 191-191 On the Peculiarities of the Star Listed as Nova Aurigae 1960–64 (KR Aur)....Pages 192-193 Evidence for Continued Ejection Models of Novae....Pages 194-194 A Note on the Possible Evolutionary Status of the Recurrent Nova T CrB....Pages 195-195 Discussion after Paper by Mustel....Pages 196-197 The Chemical Composition of Late Type Stars....Pages 198-205 Abundances in Ap Stars; Result of Magnetic Binary Evolution....Pages 206-207 Helium Abundance from Radio Recombination Lines....Pages 208-208 Discussion after Paper by Boyarchuk....Pages 209-209 FG Sagittae: The s -Process Episode....Pages 210-210 Deciphering FG Sagittae....Pages 211-211 Discussion after Paper by Kraft....Pages 212-212 Nuclei of Planetary Nebulae....Pages 213-219 Discussion after Paper by O’Dell....Pages 220-221 White Dwarfs....Pages 222-230 The Sources of Energy in White Dwarfs....Pages 231-231 Degenerate Dwarfs with Liquefying Cores....Pages 232-233 Evidence for g -Mode Oscillations in the Peculiar Blue Variable CD −42°14462....Pages 234-234 Circulation in Differentially Rotating White Dwarfs....Pages 235-235 Discussion after Paper by Vila....Pages 236-236 Horizontal Branch Stars....Pages 237-237 Four-Color Observations of Blue Horizontal-Branch Stars....Pages 238-239 On the Behaviour of Globular Cluster Red Giants in the Color-Magnitude Diagram....Pages 240-243 Photometric Behaviour of Field RR Lyrae Stars....Pages 244-244 What Snu? the Case of the Missing Solar Neutrinos....Pages 245-248 The Interior Structure of the Sun as Gleaned from the Various Explanations of the Null Solar Neutrino Experiment Results....Pages 249-249 Effect of Magnetic Field on Solar Neutrino Flux....Pages 250-250 Praesepe: No Evidence for Solar Mixing....Pages 251-251 A Listener’s Digest of IAU Symposium No. 64 on Gravitational Radiation and Gravitational Collapse....Pages 252-253 General Discussion....Pages 254-255 Concluding Remarks....Pages 256-258 Back Matter....Pages 259-269 LAD Symposium No. 66 was held in Warsaw from September 10th to September 12th 1973, in connection with the Extraordinary General Assembly of the lAD. It was arranged by lAD Symposium No. 35 and the Scientific Organising Committee conƯ sisted of A.G. Massevitch (Chairman), A.V. Tutukov (Secretary), H.M. van Horn, N. Dallaporta, J.P. Ostriker, B. Paczynski, G. Ruben, E. Schatzman, R.J. Tayler and A. Weigert. This volume contains the full texts of all of the invited papers presented at the Symposium, apart from that delivered by R.P. Kraft, which is published in abstract because it is appearing in full elsewhere. In addition the short communications given at the Symposium are published in abstract. I attempted to take down all of the disƯ cussion as it occurred and all contributors to the discussion were asked to provide copies of their remarks. From these sources an edited version of the discussion has been produced. As the final version has not been seen by the contributors, I should be held responsible for all errors. At Warsaw, some of the short communications did not immediately follow the invited paper to which they referred. In the printed version they and any discussion relating to them are placed in the most logical position. A small number of short communications, which were circulated in abstract at Warsaw but which were not delivered orally, are also included in the published version Proceedings of IAU Symposium No. 66 held in Warsaw, Poland, September 10-12, 1973