Hostname: page-component-76fb5796d-skm99 Total loading time: 0 Render date: 2024-04-27T02:49:50.241Z Has data issue: false hasContentIssue false
  • English
  • Français

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: adupree@cfa.harvard.edu
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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 

References

Arroyo-Torres, B., Wittkowski, M., Chiavassa, A. et al. 2015, A&A 575 A50 Google Scholar
Auriére, M., Donati, J.-F., Konstantinova-Antonva, R., Perrin, G., Petit, P., & Roudier, T. 2010, A&A 516 L2 Google Scholar
Ayres, T. R., Fleming, T. A., Simon, T. et al. 1995, ApJS 96 223 Google Scholar
Decin, L., Cox, N. L. J., Royer, P. et al. 2012, A&A A113CrossRefGoogle Scholar
Dupree, A. K., Baliunas, S. L., Guinan, E. F., Hartmann, L., Nassiopoulos, G., & Sonneborn, G. 1987, ApJ 317 L85 CrossRefGoogle Scholar
Dupree, A. K., Lobel, A., Young, P. R., Ake, T. B., Linsky, J. L., & Redfield, S. 2005, ApJ 622 629 CrossRefGoogle Scholar
Dupree, A. K. & Stefanik, R. P. 2013, EAS Publications Series, ed. Kervella, P., LeBertre, T., & Perrin, G., 60, 77 Google Scholar
Gilliland, R. & Dupree, A. K. 1996, ApJ 463 L29 Google Scholar
Lobel, A. & Dupree, A. K. 2001, ApJ 558 780 CrossRefGoogle Scholar
O'Gorman, E., Harper, G. M., Brown, A., Guinan, E. F., Richards, A. M. S., Vlemmings, W., & Wasatonic, R. 2015, A&A A101Google Scholar
Mészáros, Sz., Avrett, E. H., & Dupree, A. K. 2009a, AJ 138 615 CrossRefGoogle Scholar
Mèszáros, Sz., Dupree, A. K., & Szalai, T. 2009b, AJ 137 4282 Google Scholar
Schwarzschild, M. 1975, ApJ 195 137 Google Scholar
Uitenbroek, H., Dupree, A. K., & Gilliland, R. L. 1998, AJ 116 2501 Google Scholar