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Beam me up, Spotty: Toward a new understanding of the physics of massive star photospheres

Published online by Cambridge University Press:  23 January 2015

Alexandre David-Uraz ,
Gregg Wade  and
Stan Owocki
Alexandre David-Uraz
Affiliation:
Queen's University, Canada email: adavid-uraz@astro.queensu.ca
Gregg Wade
Affiliation:
Royal Military College, Canada
Stan Owocki
Affiliation:
University of Delaware, USA
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Abstract

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For 30 years, cyclical wind variability in OB stars has puzzled the astronomical community. Phenomenological models involving co-rotating bright spots provide a potential explanation for the observed variations, but the underlying physics remains unknown. We present recent results from hydrodynamical simulations constraining bright spot properties and compare them to what can be inferred from space-based photometry. We also explore the possibility that these spots are caused by magnetic fields and discuss the detectability of such fields.

Keywords

Hydrodynamicsmethods: numericalstars: windsoutflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 371 - 372
Copyright
Copyright © International Astronomical Union 2015 

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