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The Timescales of Variations in Continuum and Hydrogen Lines During Stellar Flares

Published online by Cambridge University Press:  12 April 2016

B.R. Pettersen
B.R. Pettersen*
Affiliation:
Institute of Mathematical and Physical Sciences, University of Tromsø, N-9001 Tromsø, Norway

Abstract

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Light curves of major stellar flares have been used to study the behavior of U-B, B-V, and V-R. The majority of the flux transmitted through these filters is continuum radiation, but U and B are affected by emission lines. The variability of Ha and H$ emission lines were monitored through narrow band filters. The timescales of emission line variability are considerably longer than those for the continuum, and the emission line flare peak occurs a few minutes after the continuum flare maximum. No variability in lines at a timescale of seconds is detected in our data.

Type
Session II: Observed Activity in Red-Dwarfs
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 239 - 243
Copyright
Copyright © Reidel 1983

References

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