A1 Refereed original research article in a scientific journal
Multiperiodicity, modulations and flip-flops in variable star light curves II. Analysis of II Pegasus photometry during 1979-2010
Authors: Lindborg M, Mantere MJ, Olspert N, Pelt J, Hackman T, Henry GW, Jetsu L, Strassmeier KG
Publication year: 2013
Journal: Astronomy and Astrophysics
Journal name in source: ASTRONOMY & ASTROPHYSICS
Journal acronym: ASTRON ASTROPHYS
Article number: ARTN A97
Volume: 559
Number of pages: 10
ISSN: 0004-6361
DOI: https://doi.org/10.1051/0004-6361/201321695
Abstract
Conclusions. There is some evidence that the regular drift without phase jumps is related to the high state, while the complex phase behavior and disrupted drift pattern are related to the low state of magnetic activity. The most natural explanation of the drift is weak anti-solar (pole rotating faster than the equator) differential rotation with a coefficient k approximate to 0.002 combined with the preferred latitude of the spot structure.
Conclusions. There is some evidence that the regular drift without phase jumps is related to the high state, while the complex phase behavior and disrupted drift pattern are related to the low state of magnetic activity. The most natural explanation of the drift is weak anti-solar (pole rotating faster than the equator) differential rotation with a coefficient k approximate to 0.002 combined with the preferred latitude of the spot structure.
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