PRINJA, RK (1994) TIME-DEPENDENT PHENOMENA IN OB STAR WINDS. In: Balona, LA and Henrichs, HF and LeContel, JM, (eds.) PULSATION, ROTATION AND MASS LOSS IN EARLY-TYPE STARS. (pp. 507 - 516). KLUWER ACADEMIC PUBL
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Abstract
Spectroscopic observations are discussed which indicate that the winds of luminous OB stars are highly structured in space and variable in time. Blueward migrating discrete optical depth enhancements in the absorption troughs of P Cygni profiles are the characteristic signatures of the evolving structure. Constraints on physical mechanisms are discussed, provided by the observed accelerations of the migrating features, the evidence for rotationally modulated variability, and the behaviour of the winds at very low velocities.
| Type: | Proceedings paper |
|---|---|
| Title: | TIME-DEPENDENT PHENOMENA IN OB STAR WINDS |
| Event: | 162nd Symposium of the International Astronomical Union - Pulsation, Rotation and Mass Loss in Early-Type Stars |
| Location: | ANTIBES JUAN LES PINS, FRANCE |
| Dates: | 1993-10-05 - 1993-10-08 |
| ISBN: | 0-7923-3044-7 |
| Keywords: | COROTATING INTERACTION REGIONS, STELLAR WINDS, ENHANCEMENTS, VARIABILITY, SPECTRA |
| UCL classification: | UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy |
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