Variable and Non-spherical Stellar Winds in Luminous Hot Stars : Proceedings of the IAU Colloquium No. 169 Held in Heidelberg, Germany, 15–19 June 1998. 1st ed. 1999

種類:

電子ブック

責任表示:

edited by Bernhard Wolf, Otmar Stahl, Alex W. Fullerton

出版情報:

Berlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 1999

著者名:

• Wolf, Bernhard.
• Stahl, Otmar.
• Fullerton, Alex W.
• SpringerLink (Online service)

シリーズ名:

Lecture Notes in Physics ; 523

ISBN:

9783540490623 [3540490620]    

注記:

Rotationally modulated winds of O stars -- Rotationally modulated winds of BA-type supergiants -- Using spectropolarimetry to determine envelope geometry and test variability models for hot star circumstellar envelopes -- Disks of classical be stars -- Evidence for azimuthal asymmetry in be star winds -- Short and medium term variability of emission lines in selected southern Be stars -- Disk winds of B[e] supergiants -- Polarimetric evidence of non-spherical winds -- Wolf-rayet wind models: Photometric and polarimetric variability -- Anisotropic outflows from LBVs and Ofpe/WN9 stars -- Non-isotropic outflows in the infrared: ISO imaging of LBVs -- Radio evidence for non-isotropic outflows from hot stars -- Optical interferometry of non-spherical winds -- Direct observational evidence for magnetic fields in hot stars -- HST WFPCII observations of the inner HR car nebula -- Observing hot stars in all four stokes parameters -- Inverse spectropolarimetric modelling of hot star wind structure and variability -- P
There is abundant evidence that essentially all luminous hot-star winds contain time-dependent and anisotropic structures. IAU Colloquium 169 was convened to review the observations of variability and asphericity, to discuss the physical processes that might cause such behavior and to look for evolutionary consequences. The topics included OBA stars, Be stars, Wolf-Rayet stars, Be stars, and luminous blue variables (LBVs). The role played by rotation in shaping the stellar wind was a recurrent theme. Photospheric pulsations and/or magnetic fields are particularly appealing mechanisms for triggering the formation of recurrent wind structures.

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