Multiperiodicity, modulations and flip-flops in variable star light curves II. Analysis of II Pegasus photometry during 1979-2010



: Lindborg M, Mantere MJ, Olspert N, Pelt J, Hackman T, Henry GW, Jetsu L, Strassmeier KG

: 2013

 Astronomy and Astrophysics

: ASTRONOMY & ASTROPHYSICS

: ASTRON ASTROPHYS

: ARTN A97

: 559

: 10

: 0004-6361

DOI: https://doi.org/10.1051/0004-6361/201321695


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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