Effects of Mass Loss on Stellar Evolution: IAU Colloquium no. 59 Held in Miramare, Trieste, Italy, September 15–19, 1980 (Astrophysics and Space Science Library (89))

The IAU Colloquium No. 59, "The effects of mass loss on Stellar Evolution" was held on September 15-19, 1980 at the International Centre for Theoretical Physics, Miramare, Trieste (Italy), under the auspices of the IAU Executive Co~ mittee and the Italian National Council of Research. The planning of this conference began two years ago du­ ring the IAU Symposium No. 83 "Mass loss and evolution of 0 type stars" (Qualicum Beach, Victoria, Canada) when we felt that mass loss and its effects on the evolution of stars was too broad a subject for being confined to 0 type stars only. Therefore we thought that a conference dealing with the general problem of mass loss across the whole HR diagram would have been of interest to all people working in the field. The main idea was that bringing together Astronomers and Astrophysicists of the widest range of interests and e~ pertize - all in some way related to the problem of mass loss from stars - would have spurred thorough discussions on the many aspects and implications of this topic. We hope this goal has been achieved. Furthermore, the most recent observational and theoreti­ cal developments on the problem of mass loss from early ty­ pe stars avoided this meeting to be a simple updating of the Qualicum Beach Symposium as far as this issue is concerned. Front Matter....Pages i-xxii Observations of Stellar Winds in Early Type Stars....Pages 1-18 The Dependence of Mass Loss on the Basic Stellar Parameters....Pages 19-25 The Velocity Characteristics of WR Stellar Winds....Pages 27-33 The Iron Curtain of the WC 9 Star HD 164270....Pages 35-37 Is a Stellar Wind Inherent in WR-Stars Throughout the Whole of their Evolution?....Pages 39-40 Wind Characteristics of the 07 n Star HD 217086 in the Cep OB 3 Association....Pages 41-44 Mass Loss from Central Stars of Planetary Nebulae....Pages 45-50 Mass Loss Rates of OB Stars Derived from Infrared Observations....Pages 51-56 Profils De La Raie H α Par Television Analogique....Pages 57-60 Radio Observations and the Mass Flow Rate of α CYG (A2Ia)....Pages 61-64 Mass Loss Bates for Twenty One Wolf-Rayet Stars....Pages 65-65 Mass Outflow in AG Carinae and a Comparison with P Cygni....Pages 67-69 Mass Loss from Hot Stars Below the Main Sequence....Pages 71-74 On the Stellar Gravity and Effective Temperature Dependence of the Ratio of Terminal to Escape Velocities in Stellar Winds....Pages 75-78 Observational Evidences of Stellar Wind....Pages 79-82 The Radial Velocity Variations in IC 418....Pages 83-86 Mass Loss from Cool Stars....Pages 87-110 Outflow of Matter in the Chromosphere of α Orionis....Pages 111-112 Mass Loss from α Ori....Pages 113-115 On Possible Mass Loss from the Supergiant Rho Cassiopeia....Pages 117-118 Photospheric Molecular Line Profiles in Cool Stars....Pages 119-124 The Theory of Winds in Early Type Stars....Pages 125-130 Stellar Variability and Individuality: Observations and Implications....Pages 131-153 Possible Links Between Supersonic Stellar Winds and the Origin of Cosmic Rays....Pages 155-158 Line Formation in the Wind of Alpha Cygni....Pages 159-160 Empirical Wind Models from Detailed UV-Line Fits: Tau Scorpii....Pages 161-165 Can Hot Star Winds be Driven by Radiation Pressure?....Pages 167-171 Radiative Wind Acceleration in Early Type Stars....Pages 173-178 Radio Observations of O-Type Stars....Pages 179-180 Narrow Components in UV Line Profiles as Evidence for a Two Component Stellar Wind for O and B Stars....Pages 181-186 Winds in Late-Type Stars: Mechanisms of Mass Outflow....Pages 187-212 The Fluctuation Theory of the Stellar Mass Loss....Pages 213-227 Mass Loss and Evolution of Massive Stars....Pages 229-253 The Fraction of O-Type Supergiants in our Galaxy in the LMC and in the SMC: An Evidence of the Correlation between Mass Loss Rate and Chemical Abundance....Pages 255-259 Evolution of A 30 M⊙ Star: The Interplay of Nuclear Burning and Mass Loss....Pages 261-263 On the Significance of Mass Loss for the Evolution of Massive Stars....Pages 265-270 The Ultraviolet to Infrared Spectrum of the Large Mass Loss LMC Supergiant S22 = HD 34664 + ....Pages 271-274 The Influence of Mass Loss by Stellar Wind on the Evolution of Massive Helium Burning Stars....Pages 275-278 Stellar Evolution with SMC Chemical Abundances....Pages 279-282 Massive Stars Burning Helium: The Numbers of WR Stars and Red Super-Giants in Galaxies....Pages 283-287 Thermal Instability of Hydrogen Burning Shells in Very Massive Stars....Pages 289-292 Effects of a Stochastic Initial Mass Function on the Upper Main Sequence Band....Pages 293-296 Mass Loss from Metal-Poor Stars....Pages 297-300 Masses of Magellanic Wolf-Rayet Stars: Mass Loss and Evidence for a WR Subclass vs. Mass Relation....Pages 301-305 How Massive the Wolf-Rayet Stars are ?....Pages 307-310 The Hydrogen/Helium Ratio on the Surface of Wolf-Rayet Stars....Pages 311-314 Peculiarities in the Distribution of Galactic Wolf-Rayet Stars:Constraints on Evolutionary Scenarios ?....Pages 315-317 Evolutionary Effects of Mass Loss in Low-Mass Stars....Pages 319-328 The Initial/Final Mass Relation for Stellar Evolution with Mass Loss....Pages 339-344 Formation of a Planetary Nebula by Continuous Mass Loss....Pages 345-346 Effects of Mass Loss on the Formation of Planetary Nebulae....Pages 347-351 Miras, Mass Loss, and the Origin of Planetary Nebulae....Pages 353-356 Theoretical Evidence of Mass Loss from Globular Cluster Stars....Pages 357-359 Effect of Mass Gain on Stellar Evolution....Pages 361-371 On the Consequences of Mass Loss from Intermediate-Mass Stars....Pages 373-387 A Determination of the Characteristics of Cepheids from B-Type Companions....Pages 389-395 What “Masses” for Cepheids?....Pages 397-400 Response of Low-Mass Main Sequence Stars to Accretion....Pages 401-403 The Influence of Mass Loss on the Evolution of Binaries....Pages 405-430 Mass Loss from Interacting Close Binary Systems....Pages 431-456 Ionization Effects in Stellar Winds of Massive X-Ray Binaries....Pages 457-460 Non Conservative Massive Binary Evolution....Pages 461-463 On the Evolutionary Time Scale of the Accreting Component in Massive Close Binaries: Consequences for the Supernova Event....Pages 465-468 Observation of Mass Loss in R CrB during the Visual Light Minimum....Pages 469-471 Non-Conservative Evolutionary Scenario for 100 Algols....Pages 473-475 Infrared Observations and Mass Loss of the Binary System V861 SCO....Pages 477-480 The Nature of V861 SCO (=HD 152667)....Pages 481-486 Ultraviolet and Optical Observations of the Mass-Losing Contact Binary SV Centauri....Pages 487-489 Mass Transfer and Stellar Wind Effects in the Eclipsing Binary RT Andromedae....Pages 491-494 Properties of Optically Thick Winds Driven by Radiation Pressure....Pages 495-497 Interacting Stellar Winds in a Binary System....Pages 499-502 Evolutionary Computations for Intermediate Mass Close Binary Systems....Pages 503-506 Is this Diagrarine an Argument for Binary Orbital Evolution Due to Mass-Loss ?....Pages 507-513 Nova AQL 1918: A Nude Old Nova....Pages 515-522 Stellar Mass Loss and HII Region Morphology in Magellanic Irregular Galaxies....Pages 523-534 Stellar Mass Loss and Galactic Chemical Evolution....Pages 535-538 Subionization and Decelerated-Flow in the Vicinity of a B-Shell Star....Pages 539-541 Mass Loss and ΔY/ΔZ Ratio....Pages 543-549 Concluding Remarks....Pages 551-560 Back Matter....Pages 561-570 The IAU Colloquium No. 59, "The effects of mass loss on Stellar Evolution" was held on September 15-19, 1980 at the International Centre for Theoretical Physics, Miramare, Trieste (Italy), under the auspices of the IAU Executive Co~ mittee and the Italian National Council of Research. The planning of this conference began two years ago duƯ ring the IAU Symposium No. 83 "Mass loss and evolution of 0 type stars" (Qualicum Beach, Victoria, Canada) when we felt that mass loss and its effects on the evolution of stars was too broad a subject for being confined to 0 type stars only. Therefore we thought that a conference dealing with the general problem of mass loss across the whole HR diagram would have been of interest to all people working in the field. The main idea was that bringing together Astronomers and Astrophysicists of the widest range of interests and e~ pertize - all in some way related to the problem of mass loss from stars - would have spurred thorough discussions on the many aspects and implications of this topic. We hope this goal has been achieved. Furthermore, the most recent observational and theoretiƯ cal developments on the problem of mass loss from early tyƯ pe stars avoided this meeting to be a simple updating of the Qualicum Beach Symposium as far as this issue is concerned