Differential rotation of LQ Hya and IL Hya from time-series Doppler images
Zsolt Kovari (Konkoly Observatory)
Michael Weber (AIP)
Klaus G. Strassmeier (AIP)
A technique of detecting differential rotation from time-series Doppler images is introduced and applied to
LQ Hya and IL Hya.
For the rapidly rotating K2 dwarf LQ Hya we find an almost rigid rotation, with weak (alpha=0.0056) equatorial acceleration. A bit stronger solar-type
differential rotation was detected on the giant component of the RS CVn-type IL Hya with alpha=0.03.