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Solar rotation from a number of fraunhofer lines

โœ Scribed by A. Keith Pierce; James C. Lopresto

Publisher
Springer
Year
1984
Tongue
English
Weight
568 KB
Volume
93
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

Solar differential rotation for 1982-83 obtained at the double pass spectrograph of the McMath telescope at Kitt Peak, are presented for lines of Fe, Mg, Na, K, Si, and O in the wavelength interval 223820-10827. The results are analyzed by representations in Legendre polynominals and a power series.

The differential rotation is very close to the result obtained by Howard and Harvey in 1966-68 at Mt. Wilson but with a slightly greater amplititude. We find a mean equatorial rate of rotation of 1.977 km s -~. Day to day variations are observed in the equatorial zone; a stable rate of rotation is observed outside of the sunspot zone.

๐Ÿ“œ SIMILAR VOLUMES

True central intensities of Fraunhofer l
True central intensities of Fraunhofer lines
โœ J. W. Brault; C. D. Slaughter; A. K. Pierce; R. S. Aikens ๐Ÿ“‚ Article ๐Ÿ“… 1971 ๐Ÿ› Springer ๐ŸŒ English โš– 648 KB

From observations made at Kitt Peak the true central intensities of 40 Fraunhofer lines distributed between ,~2 3083-7699, for the center of the solar disk, are derived and given in tabular form. The paper includes a description of the optical system -telescope and spectrograph. The methods of obser