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Turbulence in the atmospheres of eclipsing binary stars

  • 2. Observed Properties of Stellar Turbulence
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Stellar Turbulence

Part of the book series: Lecture Notes in Physics ((LNP,volume 114))

Abstract

A review of the orbits and dimensions of the C Aurigae systems is given, based on photometric and spectrographic observations. The Ca II K-Tine has been studied intensively to determine the extent and uneven structure of the chromospheres of these stars; the multiple structure of this line observed at several eclipses confirms the presence of large-scale clouds in the atmospheres. Measurements of line profiles and equivalent widths show that macroturbulent velocities up to 10 km/sec in the upper chromosphere, and up to 20 km/sec. in the lower chromosphere are present. Microturbulent velocities in the lower chromosphere are about 10 km/sec. Recent ultraviolet observations indicate that the B star in the 32 Cygni system may be within the outer chromosphere of the giant component and its radiation may affect the chromospheric structure more than had previously been suggested.

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Authors and Affiliations

  1. Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, USA

    K. O. Wright

Authors
  1. K. O. Wright
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David F. Gray Jeffery L. Linsky

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© 1980 Springer-Verlag

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Wright, K.O. (1980). Turbulence in the atmospheres of eclipsing binary stars. In: Gray, D.F., Linsky, J.L. (eds) Stellar Turbulence. Lecture Notes in Physics, vol 114. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-09737-6_22

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  • DOI: https://doi.org/10.1007/3-540-09737-6_22

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-09737-2

  • Online ISBN: 978-3-540-38554-7

  • eBook Packages: Springer Book Archive

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