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Width of emission cores of the line K Caiiin sunspots

✍ Scribed by R. B. Teplitskaja; S. A. Efendieva

Publisher
Springer
Year
1973
Tongue
English
Weight
341 KB
Volume
28
Category
Article
ISSN
0038-0938

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✦ Synopsis

Emission core widths of K Ca H line in the umbra and penumbra of 9 sunspots and in their vicinity are measured. All sunspots are located near the solar disc center. Data on variation of widths Wt~ along the 'mean' sunspot radius are obtained. Values W~ in the umbra and penumbra centers are equal or somewhat less than on stars of the same luminosity.

πŸ“œ SIMILAR VOLUMES

Emission measures and structure of the t
Emission measures and structure of the transition region of a sunspot from emission lines in the far ultraviolet
✍ Chung-Chieh Cheng; O. Kjeldseth Moe πŸ“‚ Article πŸ“… 1977 πŸ› Springer 🌐 English βš– 492 KB

Absolute intensities of emission lines in the wavelength range from 1200 A to 1817 A from the large sunspot in McMath region 12510 near Sun center are presented. The intensities are averaged across the umbra and penumbra of the sunspot. The observations were made with the NRL slit spectrograph on Sk