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Parameters of dark mottles based on high resolution optical spectra

Published online by Cambridge University Press:  14 March 2005

P. Kotrč ,
P. Heinzel ,
K. Tziotziou  and
G. Tsiropoula
P. Kotrč
Affiliation:
Astronomical Institute Ondřejov, Czech Republic, email: [email protected]
P. Heinzel
Affiliation:
Astronomical Institute Ondřejov, Czech Republic, email: [email protected]
K. Tziotziou
Affiliation:
Sterrekunding Institute, Utrecht University, Postbus 80000, 3508 TA, The Netherlands email: [email protected]
G. Tsiropoula
Affiliation:
National Observatory of Athens, Institute for Space Applications and Remote Sensing, Lofos Koufos, 15236 P.Penteli, Greece email: [email protected]
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Abstract

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High resolution optical spectra of hydrogen and calcium lines observed with the Echelle spectrograph of the VTT at Sacramento Peak Observatory were analyzed. The observed line profiles in some parts of dark chromospheric mottles are to be matched with theoretical ones using the cloud model and several parameters (e.g. the temperature, gas pressure, flow velocity) are to be derived. Individual steps of the procedure, as well as crucial problems are discussed.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS223 , June 2004 , pp. 275 - 276
Copyright
© 2004 International Astronomical Union