Physics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..135....1g&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 135, Sept. 1991, p. 1-13.
Physics
8
Atmospheric Models, Calcium, Metal Ions, Solar Atmosphere, Spectral Line Width, Chromosphere, Thermodynamic Properties
Scientific paper
Profiles of five Ca II lines were calculated using three models of the solar atmosphere with different mean temperature gradients in the chromosphere. Contribution functions and response functions to temperature and velocity variations for the line centers and for the K2 and H2 emission peaks were found. Disturbances were specified locally at each point of the chromosphere, but for temperature disturbances the other thermodynamical parameter distributions were redetermined. Effective heights of the contribution and response functions, and also the width of the layer reacting to disturbances, depend substantially on the line strength and on the temperature gradient. Contribution curves and response functions to velocity variations differ drastically in form but, in spite of this, their centers of gravity and widths have a similar behavior. The response function to temperature variations differs from the former two in all its characteristics.
Grigor'eva S. A.
Teplitskaia R. B.
Turova I. P.
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