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http://hdl.handle.net/2248/623| 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. |
| URI: | http://hdl.handle.net/2248/623 |
| Appears in Collections: | BASI Publications M.K. Vainu Bappu ( 1960 - 1982 ) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MEKKADEN.pdf | 431.06 kB | Adobe PDF |  View/Open |
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