Proceedings of a Meeting, Held at Union College, Schenectady, New York November 4 6, 1993 in Honor of the 65th Birthda Herausgeber: Adelman, Carol J.; Upgren, A. R.; Adelman, Saul J.
Proceedings of a Meeting, Held at Union College, Schenectady, New York November 4 6, 1993 in Honor of the 65th Birthda Herausgeber: Adelman, Carol J.; Upgren, A. R.; Adelman, Saul J.
Our understanding of the 'hot' stars that form a halo around our galaxy is undergoing a renaissance: recent increases in the power of computers are now allowing a far more detailed and complete modelling of stellar evolution. A conference was held in Union College, New York, to gather experts in the field to re-examine the role of these hot stars and this volume draws together their articles to provide a timely review. These articles show how advances in computer power have, in particular, allowed complex modelling of the core helium-burning and ultraviolet-bright stages. They go on to…mehr
Our understanding of the 'hot' stars that form a halo around our galaxy is undergoing a renaissance: recent increases in the power of computers are now allowing a far more detailed and complete modelling of stellar evolution. A conference was held in Union College, New York, to gather experts in the field to re-examine the role of these hot stars and this volume draws together their articles to provide a timely review. These articles show how advances in computer power have, in particular, allowed complex modelling of the core helium-burning and ultraviolet-bright stages. They go on to demonstrate how this modelling is leading to a better understanding of new observations of stars on the horizontal branch, both in the field and in globular clusters, as well as stars in later stages of stellar evolution. Together these articles provide an up-to-date and comprehensive review for graduate students and researchers interested in the hot stars in the halo, especially the history of the halo and the evolution of old stellar populations of different metallicities.
Participants Preface Foreword Acknowledgements Part I. Introductory Papers: 1. What is the galaxy's halo population? 2. Theoretical properties of horizontal-branch stars 3. A review of A-type horizontal-branch stars Part II. Surveys: 4. A progress report on the Edinburgh-Cape object survey 5. A 300 square degree survey of young stars at high galactic latitudes 6. The isolation of a new sample of B stars in the halo 7. A northern catalog of FHB/A stars 8. Recent progress on a continuing survey of galactic globular clusters for blue stragglers 9. UV observations with FAUST and the galactic model 10. Hot stars at the South Galactic Pole Part III. Clusters: 11. Population II horizontal branches: a photometric study of globular clusters 12. The period-shift effect in Oosterhoff type II globular clusters 13. UV photometry of hot stars in omega centauri 14. Spectroscopic and UBV observations of blue stars at the NGP 15. Population I horizontal branches: probing the halo-to-disk transition Part IV. Stars: 16. Very hot subdwarf O stars 17. Quantitative spectroscopy of the very hot subluminous O-stars: K646, PG1159-035, and KPD0005+5106 18. Analyzing the helium-rich hot sdO stars in the Palomar Green Survey 19. Late type companions of hot sd O stars 20. Hot stars in globular clusters 21. Faint blue stars from the Hamburg Schmidt Survey 22. Stellar winds and the evolution of sdB's to sdO's 23. Halo stars in the Vilnius photometric system 24. Horizontal branch stars in the geneva photometric system 25. Zeeman observations of FHB stars and hot subdwarf stars 26. What does a FHB star's spectrum look like? 27. A technique for distinguishing FHB stars from A-type stars 28. eEemental abundances of halo A and interloper stars 29. The mass of blue horizontal branch stars in the globular cluster NGC6397 30. IUE observations of blue HB stars in the globular clusters M3 and NGC6752 31. Metallicities and kinematics of the local RR lyraes: lukewarm stars in the halo 32. Baade¿Wesselink analyses of field vs. cluster RR lyrae variables 33. The rotation of population II A stars 34. Horizontal branch stars and possibly related objects 35. A new group of post-AGB objects - the hot carbon-poor stars 36. MK classifications of hot stars in the halo 37. Photometry of XX Virginis and V716 Ophiuchi and the period luminosity relations of type II cepheids 38. Rotation and oxygen line strengths in blue horizontal branch stars Part V. Miscellaneous: 39. UBV CCd photometry of the halo of M31 40. Can stars still form in the galactic halo? 41. The ultraviolet imaging telescope on the Astro -1 and Astro -2 missions 42. Are analogues of hot subdwarf stars responsible for the UVX phenomenon in galaxy nucleli 43. A survey for field BHB stars outside the solar circle 44. Post-AGB A and F supergiants as standard candles 45. The extended horizontal-branch: a challenge for stellar evolution theory 46. Astronomical patterns in fractals: the work of A. G. Davis Philip on the Mandelbrot Set Part VI. Summary: 47. Final remarks Author index Subject index.
Participants Preface Foreword Acknowledgements Part I. Introductory Papers: 1. What is the galaxy's halo population? 2. Theoretical properties of horizontal-branch stars 3. A review of A-type horizontal-branch stars Part II. Surveys: 4. A progress report on the Edinburgh-Cape object survey 5. A 300 square degree survey of young stars at high galactic latitudes 6. The isolation of a new sample of B stars in the halo 7. A northern catalog of FHB/A stars 8. Recent progress on a continuing survey of galactic globular clusters for blue stragglers 9. UV observations with FAUST and the galactic model 10. Hot stars at the South Galactic Pole Part III. Clusters: 11. Population II horizontal branches: a photometric study of globular clusters 12. The period-shift effect in Oosterhoff type II globular clusters 13. UV photometry of hot stars in omega centauri 14. Spectroscopic and UBV observations of blue stars at the NGP 15. Population I horizontal branches: probing the halo-to-disk transition Part IV. Stars: 16. Very hot subdwarf O stars 17. Quantitative spectroscopy of the very hot subluminous O-stars: K646, PG1159-035, and KPD0005+5106 18. Analyzing the helium-rich hot sdO stars in the Palomar Green Survey 19. Late type companions of hot sd O stars 20. Hot stars in globular clusters 21. Faint blue stars from the Hamburg Schmidt Survey 22. Stellar winds and the evolution of sdB's to sdO's 23. Halo stars in the Vilnius photometric system 24. Horizontal branch stars in the geneva photometric system 25. Zeeman observations of FHB stars and hot subdwarf stars 26. What does a FHB star's spectrum look like? 27. A technique for distinguishing FHB stars from A-type stars 28. eEemental abundances of halo A and interloper stars 29. The mass of blue horizontal branch stars in the globular cluster NGC6397 30. IUE observations of blue HB stars in the globular clusters M3 and NGC6752 31. Metallicities and kinematics of the local RR lyraes: lukewarm stars in the halo 32. Baade¿Wesselink analyses of field vs. cluster RR lyrae variables 33. The rotation of population II A stars 34. Horizontal branch stars and possibly related objects 35. A new group of post-AGB objects - the hot carbon-poor stars 36. MK classifications of hot stars in the halo 37. Photometry of XX Virginis and V716 Ophiuchi and the period luminosity relations of type II cepheids 38. Rotation and oxygen line strengths in blue horizontal branch stars Part V. Miscellaneous: 39. UBV CCd photometry of the halo of M31 40. Can stars still form in the galactic halo? 41. The ultraviolet imaging telescope on the Astro -1 and Astro -2 missions 42. Are analogues of hot subdwarf stars responsible for the UVX phenomenon in galaxy nucleli 43. A survey for field BHB stars outside the solar circle 44. Post-AGB A and F supergiants as standard candles 45. The extended horizontal-branch: a challenge for stellar evolution theory 46. Astronomical patterns in fractals: the work of A. G. Davis Philip on the Mandelbrot Set Part VI. Summary: 47. Final remarks Author index Subject index.
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