A1 Refereed original research article in a scientific journal
Doppler imaging of LQ Hydrae for 1998-2002
Authors: Cole EM, Hackman T, Kapyka MJ, Ilyin I, Kochukhov O, Piskunov N
Publisher: EDP SCIENCES S A
Publication year: 2015
Journal: Astronomy and Astrophysics
Journal name in source: ASTRONOMY & ASTROPHYSICS
Journal acronym: ASTRON ASTROPHYS
Article number: ARTN A69
Volume: 581
Number of pages: 9
ISSN: 1432-0746
DOI: https://doi.org/10.1051/0004-6361/201425440
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.