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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
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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2015 

References

Abbott, D. C. 1982, ApJ 259, 282CrossRefGoogle Scholar
Cantiello, M., Langer, N., Brott, I., et al. 2009, A&A 499, 279Google Scholar
Cranmer, S. R. & Owocki, S. P. 1996, ApJ 462, 469CrossRefGoogle Scholar
David-Uraz, A., Wade, G. A., Petit, V., et al. 2014, ArXiv e-printsGoogle Scholar
Howarth, I. D. & Prinja, R. K. 1989, ApJS 69, 527CrossRefGoogle Scholar
Kochukhov, O. & Sudnik, N. 2013, A&A 554, A93Google Scholar
Mullan, D. J. 1986, A&A 165, 157Google Scholar
Ramiaramanantsoa, T., Moffat, A. F. J., Chené, A.-N., et al. 2014, MNRAS 441, 910Google Scholar
Wade, G. A., Grunhut, J., Alecian, E., et al. 2013, ArXiv e-printsGoogle Scholar