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Photometric observations from theoretical flip-flop models

H. Korhonen·D. Elstner
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Abstract

Some active stars show a so-called flip-flop phenomenon in which the main spot activity periodically switches between two active longitudes that are 180 degrees apart. In this paper we study the flip-flop phenomenon by converting results from dynamo calculations into long-term synthetic photometric observations, which are then compared to the real stellar observations. We show that similar activity patterns as obtained from flip-flop dynamo calculations, can also be seen in the observations. The long-term light-curve behaviour seen in the synthesised data can be used for finding new stars exhibiting the flip-flop phenomenon.

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H. Korhonen, D. Elstner. 2005-06-13. Photometric observations from theoretical flip-flop models. https://doi.org/10.1051/0004-6361%3A20053562

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