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Time series Doppler imaging using STELLA

Published online by Cambridge University Press:  01 November 2008

Michael Weber ,
Klaus G. Strassmeier  and
Thomas Granzer
Michael Weber
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D–14482 Potsdam, Germany email: mweber@aip.de
Klaus G. Strassmeier
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D–14482 Potsdam, Germany email: mweber@aip.de
Thomas Granzer
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D–14482 Potsdam, Germany email: mweber@aip.de
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Abstract

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One of the core programs of the STELLA robotic observatory is to monitor the stellar activity on a sample of stars using Doppler imaging. We present first preliminary results of the rapidly rotating, single giant star HD 31993 from the first two years of operation. We confirm the presence and orientation of differential rotation on the stellar surface.

Keywords

Instrumentation: spectrographs – techniques: spectroscopic – stars: imaging – stars: rotation – stars: spots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 427 - 428
Copyright
Copyright © International Astronomical Union 2009

References

Rice, J. B. & Strassmeier, K. G. 2000, A&AS 147, 151Google Scholar
Strassmeier, K. G., Kratzwald, L., & Weber, M. 2003, A&A 408, 1103Google Scholar
Weber, M., Granzer, T., Strassmeier, K. G., & Woche, M. 2008, in Advanced Software and Control for Astronomy II, ed. Bridger, A. & Radziwill, N. M., SPIE 7019, 70190LGoogle Scholar