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Chromospheres of Luminous Cool Stars

Published online by Cambridge University Press:  27 October 2016

A. K. Dupree
A. K. Dupree*
Affiliation:
Harvard-Smithsonian Center for Astrophysics 60 Garden St., Cambridge, MA 02138, USA email: [email protected]
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Abstract

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Direct ultraviolet imaging and spectroscopy of Alpha Orionis (Betelgeuse) reveals variable chromospheric structures and mass motions. Spectroscopy also demonstrates the changes of wind opacity, speeds, and mass loss in luminous stars. Cool stars have complex chromospheres that need to be considered in construction of stellar atmospheric models and subsequent spectral analyses.

Keywords

stars: atmospheresstars: chromospheresstars: imagingstars: masslossstars: supergiants
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 447 - 449
Copyright
Copyright © International Astronomical Union 2016 

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