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Circumstellar dust, the astronomical dust that forms around a star, provides today's researchers with important clues for understanding how the Universe has evolved. This volume examines the structure, dynamics and observable consequences of the dust clouds surrounding highly evolved stars on the Giant Branch. Early chapters cover the physical and chemical basis of the formation of dust shells, the outflow of matter, and condensation processes, while offering detailed descriptions of techniques for calculating dust formation and growth. Later chapters showcase a wide range of modeling strategies, including chemical and radiative transfer and dust-induced non-linear dynamics, as well as the latest data obtained from AGB stars and other giants. This volume introduces graduate students and researchers to the theoretical description for modeling the dusty outflows from cool stars and provides a full understanding of the processes involved.
List of contents
Part I. Setting the Stage: 1. Introduction; 2. Evolutionary status of dust-enshrouded objects; Part II. Theoretical Description of Circumstellar Dust Shells: 3. Theory of circumstellar dust shells; 4. The energy equation for matter; 5. Radiative transfer; 6. Interaction between gas and dust particles; 7. Extinction by dust grains and gas; 8. Approaches to the temperature equations; 9. Chemistry in thermodynamic equilibrium; 10. Gas-phase chemical composition; 11. Gas-solid chemical equilibria; 12. Growth of dust grains; 13. Formation of seed nuclei; 14. Moment equations; Part III. Applications: 15. Modeling of circumstellar dust shells; 16. Miras and long-period variables; 17. Mass loss formulae; 18. R Coronae Borealis stars; Part IV. Appendices; Bibliography; Index.
About the author
Hans-Peter Gail received his PhD in astrophysics from the University of Heidelberg, Germany, where he has been a professor since 1996. His research interests include cosmic dust, the cosmic matter cycle, mass-loss processes, protoplanetary disks and astromineralogy.Erwin Sedlmayr is a Professor of Astronomy and Astrophysics at the Technische Universität Berlin, Germany, where he served as the head of the Center for Astronomy and Astrophysics for seven years. His research focuses on cosmic dust, modeling stellar dust forming systems, stellar mass-loss, the cosmic matter cycle and non-linear dynamics.
Summary
Highly evolved giant stars are the most efficient producers of cosmic dust, and are important specimens for infrared astronomy. This book introduces researchers and graduate students to methods of modeling circumstellar dust shells and dusty outflows from cool stars, providing a full treatment of the involved processes.
