CA II K emission in Canopus

Details CA II K emission in Canopus CA II K emission in Canopus

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984basi...12..196b&link_type=abstract

Astronomical Society of India, Bulletin, vol. 12, June 1984, p. 196-201.

Astronomy and Astrophysics

Astronomy

Chromosphere, Metallicity, Stellar Spectra, Supergiant Stars, Calcium, Emission Spectra, Faculae, K Lines

Scientific paper

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 occurring in Mg II h and k lines also. This is attributed to the variability in the appearance of plage areas on the stellar surface.

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