A1 Refereed original research article in a scientific journal

Doppler imaging of LQ Hydrae for 1998-2002




AuthorsCole EM, Hackman T, Kapyka MJ, Ilyin I, Kochukhov O, Piskunov N

PublisherEDP SCIENCES S A

Publication year2015

JournalAstronomy and Astrophysics

Journal name in sourceASTRONOMY & ASTROPHYSICS

Journal acronymASTRON ASTROPHYS

Article numberARTN A69

Volume581

Number of pages9

ISSN1432-0746

DOIhttps://doi.org/10.1051/0004-6361/201425440


Abstract

Conclusions. We find no evidence for active longitudes persisting over multiple observing seasons. The spot activity appears to be concentrated to two latitude regions. Using the currently accepted rotation period, we find spot structures to show a trend in the phase-time plot, indicative of a need for a longer period. We conclude that the long-term activity of LQ Hya is more chaotic than that of some magnetically active binary stars analyzed with similar methods, but still with clear indications of an activity cycle from the photometry.




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