Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..219..546g&link_type=abstract
Stars as suns : activity, evolution and planets, Proceedings of the 219th symposium of the International Astronomical Union held
Astronomy and Astrophysics
Astronomy
Scientific paper
Doppler Imaging provides us with a growing number of surface maps of fast-rotating late-type stars. These maps often reveal solar-spot like star spots. As the resemblance to sun-spots is striking it appears feasible to apply an MHD model gained from studying our Sun's spots to these highly-active stars. In this poster we want to directly compare stellar spot patterns derived from theory with actual observations. The rise of thin magnetic flux-tubes from the bottom of an outer stellar convection zone up to the photosphere is followed numerically. The emergence points of the flux-tubes in the photosphere of the model stars are than compared to Doppler-imaging derived surface maps. With this comparison the feasibility of applying a solar-analog model is discussed.
Granzer Th.
Strassmeier Klaus G.
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