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Title: Ca II K Emission in Canopus
Authors: Bappu, M. K. V
Mekkaden, M. V
Kameswara Rao, N
Keywords: Ca II K Line;Mg II h and k lines;Chromospheres;Plages
Issue Date: Jun-1984
Publisher: Astronomical Society of India
Citation: BASI, Vol. 12, No. 2, pp. 196-201
Abstract: The Changes in the Ca II K line profile of the F0 supergiant Canopus have been studied from the high dispersion coude spectrograms obtained since 1975. The emission in the core of the line is variable in a timescale of few days. Similar activity seems to be occuring in Mg II h and k lines also. This is attributed to the variability in the appearance of plage areas on the stellar surface.
Appears in Collections:BASI Publications
M.K. Vainu Bappu ( 1960 - 1982 )

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