Space and time variations of KI 7699 solar line profile |
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| Authors: | T Roca-Cortes H Wöhl M Vazquez |
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| Institution: | 1. Institute de Astrofisica de Canarias, CSIC, Universidad de La Laguna, Tenerife, Spain
2. Kiepenheuer Institut für Sonnenphysik, Sch?neckstr. 6, D-7800, Freiburg, Germany
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| Abstract: | The temporal and spatial behaviour of the Ki7699 line profile is investigated. In particular we have measured the asymmetries of the line profile at several residual intensities using the bisector method. We find, in the bisector of the mean line profile, similar shapes as those obtained before for different positions on the solar disk. However the strong variations of the bisector found with time and geometry of input aperture, warns us against the use of the mean or integrated profiles (either in time or space). Moreover, we find an anticorrelation between the asymmetry in the line profile at different residual intensities and the shift, found as the distance to a terrestrial line, for any position observed on the solar disk. No limb effect for this line is found, within errors. |
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