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Klappentext Originally published in 1957, this book contains papers from the Ninth General Assembly of the International Astronomical Union. Zusammenfassung Originally published in 1957! this book contains papers from the Ninth General Assembly of the International Astronomical Union. Offering a re-assessment of non-stable stars and recognising! relocating and redefining the issues surrounding stellar instability! this book will be a valuable reference work to anyone interested in the history of physics! astronomy and cosmology. Inhaltsverzeichnis Preface; Part I. Instability in Dwarf Stars of Later Type: T Tauri Stars and Related Objects, and the UV Ceti Variables: 1. On the nature and origin of the T Tauri stars George H. Herbig; 2. Irregular variable stars of the RW Aurigae type P. N. Kholopov; 3. On RW Aurigae type stars and related types C. Hoffmeister; 4. The possible connexion between T Tauri stars and UV Ceti stars Guillermo Haro; 5. Flare spectra in dwarf stars Alfred H. Joy; 6. Photo-electric observations of AE Aquarii F. Lenouvel; Part II. Instability in the Hot Stars of Low Luminosity and in the Novae: 7. Evidence for instability among sub-luminous stars Jesse L. Greenstein; 8. The extremely rapid light-variations of old novae and related objects Merle F. Walker; 9. Physical processes in novae E. R. Mustel; 10. Sub-system of novae I. M. Kopylov; 11. On the causes of stellar bursts I. E. Gurevitch and A. I. Lebedinsky; 12. On the nature of planetary nebulae I. S. Shklovsky; Discussion; Part III. Instability in the Luminous Stars of Early Type: 13. On the atmospheres of the Wolf-Rayet stars B. A. Vorontsov-Velyaminov; 14. Instability in stars of early spectral type Otto Struve; Discussion; Part IV. Instability in the Regular Variables of Later Type: 15. Variable stars and problems of stellar formation B. V. Kukarkin; 16. The stars with double envelopes V. P. Tsesevich; Part V. Phenomena of Instability in Binary Systems: 17. The instability of sub-giants in close binary systems Zden¿k Kopal; 18. Phenomena of non-stability in close binary systems D. J. Martynov; 19. Photometric evidence of instability in eclipsing systems Frank Bradshaw Wood; 20. Non-stability in close binary stars V. A. Krat; 21. The chromospheric spectrum and the atmosphere of 31 Cygni A. McKellar and R. M. Petrie; Discussion; Part VI. Physical Sources Causing Instability: 22. Stars of T. Tauri and UV Ceti types and the phenomenon of continuous emission V. A. Ambartsumian; Addendum to the preceding paper; 23. Possible sources of instability in stars P. Ledoux; Discussion....
