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Thermal bifurcation as a driver of stellar surface inhomogeneities It's Probably Not Too Important, But Read On!

Published online by Cambridge University Press:  25 May 2016

T.R. Ayres
T.R. Ayres*
Affiliation:
Center for Astrophysics and Space Astronomy University of Colorado, Boulder, CO, USA

Abstract

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Cool gas in the heart of the hot solar chromosphere betrays itself through anomalously strong absorptions of 4.7 μm CO lines at the extreme limb, and off-limb emissions. The origin of the “cool clouds” is thought to be a thermal instability driven by the CO itself. Questions concerning the pervasiveness and detailed structure of the “thermally-bifurcated” zones are being addressed through stigmatic spectroscopy of the solar CO bands with the NSO McMath-Pierce telescope. Here, I report recent progress, and implications for surface thermal inhomogeneities on other stars.

Information

Type
Session IV: “Outer Atmospheric Structure”
Information
Symposium - International Astronomical Union , Volume 176: Stellar Surface Structure , 1996 , pp. 371 - 384
Copyright
Copyright © Kluwer 1996 

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