Pulsation, rotation, and mass loss in early-type stars : proceedings of the 162nd Symposium of the International Astronomical Union, held in Antibes-Juan-les-Pins, France, October 5-8, 1993
著者
書誌事項
Pulsation, rotation, and mass loss in early-type stars : proceedings of the 162nd Symposium of the International Astronomical Union, held in Antibes-Juan-les-Pins, France, October 5-8, 1993
（Symposium / International Astronomical Union, no. 162）
Kluwer Academic, c1994
- : pbk
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注記
Includes index
内容説明・目次
- 巻冊次
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ISBN 9780792330448
内容説明
In this Symposium, researchers specializing in pulsation, rotation, magnetic fields and stellar winds are brought together for the first time in order to broaden our understanding of O and B stars. Thanks to advances in digital spectroscopy, new types of pulsating B stars have been discovered. The pulsations can be understood in terms of the recent revision of metal opacities, but the effects of rapid rotation and magnetic fields need further study. Observations in the UV and X-ray regions demonstrate that many B and Be stars show other activity, besides pulsation which is not yet understood. The reason for the enhanced mass loss in B stars is a question which dominates the Symposium and which remains unanswered, although it is surely to be found in activity at or near the photosphere coupled with rotation. It is shown that the geometry of the circumstellar envelopes around Be stars is indeed a flattened disk as they can now be optically resolved. The variability of radiatively-driven winds from O and B stars are likely related to the rotation of the star. This underlines the central theme of the book: that the various phenomena seen in these stars cannot be studied in isolation.
目次
- Pulsation and rotation
- magnetic fields
- X-ray observations
- polarization
- Be stars: spectroscopy and photometry
- Be stars: circumstellar environment
- OB stellar winds.
- 巻冊次
-
: pbk ISBN 9780792330455
内容説明
In this Symposium, researchers specializing in pulsation, rotation, magnetic fields and stellar winds are brought together for the first time in order to broaden our understanding of O and B stars. Thanks to advances in digital spectroscopy, new types of pulsating B stars have been discovered. The pulsations can be understood in terms of the recent revision of metal opacities, but the effects of rapid rotation and magnetic fields need further study. Observations in the UV and X-ray regions demonstrate that many B and Be stars show other activity, besides pulsation which is not yet understood. The reason for the enhanced mass loss in Be stars is a question which dominates the Symposium and which remains unanswered, although it is surely to be found in activity at or near the photosphere coupled with rotation. It is shown that the geometry of the circumstellar envelopes around Be stars is indeed a flattened disk as they can now be optically resolved. The variability of radiatively-driven winds from O and B stars are likely related to the rotation of the star. This underlines the central theme of the book: that the various phenomena seen in these stars cannot be studied in isolation.
目次
Preface. 1: Pulsation and Rotation. 2: Magnetic Fields. 3: X-Ray Observations. 4: Polarization. 5: Be Stars: Spectroscopy and Photometry. 6: Be Stars: Circumstellar Environment. 7: OB Stellar Winds. Objects Index. Author Index. Subject Index.
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