Abstract
Velocity measurements in the solar photosphere were obtained by the double monochromator DFS-12 on September 10, 13 and 14, 1999 at Ljubljana observatory. The parameters are determined from Doppler shift measurements of the Fraunhofer sodium D2 line at 5891.583 Å. Five telluric water lines in the interval between 5888.847 Å and 5899.788 Å were used for wavelength calibration. The results were fitted to the rotation model yielding the solar rotation (sidereal) coe cients and gravitational redshift velocity. The rotation coe cients for these three successive days are compared with the coe cients derived by Howard and Harvey (1970) and Wittmann (1996).
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Jejčič, S., Čadež, A. (2005). CCD Spectroscopy of Solar Rotation. In: Hanslmeier, A., Veronig, A., Messerotti, M. (eds) Solar Magnetic Phenomena. Astrophysics and Space Science Library, vol 320. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2962-4_33
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DOI: https://doi.org/10.1007/1-4020-2962-4_33
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