Pulsation and Mass Loss in Stars

1. Front Matter

   Pages i-xii

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2. Pulsation and Mass Loss from Cool Stars

   1. Front Matter

      Pages 1-1

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   2. The Mechanism of Mass Loss from Pulsating Cool Stars

      • G. H. Bowen

      Pages 3-25

   3. The Fourier Decomposition Technique: Interpreting the Variations of Pulsating Stars

      • Norman R. Simon

      Pages 27-50

   4. The Winds from Cool Stars Including the Sun

      • R. Hammer

      Pages 51-72

   5. Summary by M. Hack and L. A. Willson of Selected Short Contributions on Cool Stars by

      • R. Hammer, M. Cuntz, M. Fracassini, L. E. Pasinetti Fracassini, E. G. Schmidt, T. J. Teays et al.

      Pages 73-79

3. Pre-Main Sequence Objects

   1. Front Matter

      Pages 81-81

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   2. Circumstellar Matter and Winds in Young Stars

      • Martin Cohen

      Pages 83-104

   3. Winds from Low Mass Protostars

      • Frank H. Shu, Susana Lizano, Fred C. Adams, Steven P. Ruden

      Pages 105-118

   4. Evolution of the Outer Atmospheres of Pre-Main-Sequence Stars

      • Alexander Brown

      Pages 119-132

   5. The Fu Orionis Variables: Accretion and Mass Loss

      • Scott Kenyon, Lee Hartmann

      Pages 133-154

4. Helio- and Astro- Seismology

   1. Front Matter

      Pages 155-155

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   2. Introduction to Helio- and Astro-Seismology

      • Stuart Jordan

      Pages 157-161

   3. Observations of Solar Oscillations

      • Franz-Ludwig Deubner

      Pages 163-179

   4. Solar and Stellar Nonradial Oscillations, Wave Propagation and Heating of the Upper Atmosphere

      • Lucio Paterno

      Pages 181-206

   5. Summary by S. Jordan and L. A. Willson of Selected Contributions on Helio- and Astero- Seismology

      • D. O. Gough, L. A. M. Nejad, J. Perdang

      Pages 207-208

5. Pulsation and Mass Loss from Hot Stars

   1. Front Matter

      Pages 209-209

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   2. Mass Loss and Non-Radial Pulsations in Be Stars

      • A. G. Hearn

      Pages 211-227

   3. Time-Dependent Mass Loss from Hot Stars with and without Radiative Driving

      • John I. Castor, Stanley P. Owocki, George B. Rybicki

      Pages 229-249

   4. Nonradial Pulsations and Early Be Stars: Angular Momentum Considerations

      • Myron A. Smith

      Pages 251-274

Stellar mass loss is an essential part of the cycling of material from the interstellar medium into stars and back, and must be understood if we are to model processes on galactic to cosmological scales. The study of stellar winds and the effects of stellar mass loss has reached a particularly exciting stage where observational capabilities are increasingly able to provide interesting constraints on models and theories. Recent resu1ts from theoretical and observational work for both hot and cool stars with substantial winds have led to the suggestion that a combination of pulsation with other mechanisms makes for particularly efficient mass loss from stars. This provided the original motivation for the organization of this workshop. The conference was organized along relatively conventional lines according to the types of objects being scrutinized. However the true unity of the proceedings comes from the interplay of the mechanisms involved. For example, for the cool, luminous Mira variables, pulsation leads to shock waves that extend the atmosphere, enhancing dust formation; radiation pressure on dust drives the wind, cooling the atmosphere and in some cases suppressing the shocks. Similarly for the Be stars, both pulsation (in this case, non-radial) and radiation pressure (due to UV resonance lines) are expected to be important, and this expectation is at least qualitatively borne out by the observations.

• Accretion
• Variation
• interstellar matter
• stars
• stellar
• stellar evolution
• sun

• Dipartimento di Astronomia, Università degli Studi di Trieste, Italy

  R. Stalio

• Physics Department, Iowa State University, Ames, USA

  L. A. Willson

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