Doin’ the twist: secular changes in the surface differential rotation on AB Doradus
Doin’ the twist: secular changes in the surface differential rotation on AB Doradus
We present measurements of the rotation rates of individual starspots on the rapidly rotating young K0 dwarf AB Doradus, at six epochs between 1988 December and 1996 December. The equatorial rotation period of the star decreased from 0.5137 to 0.5129 days between 1988 December and 1992 January. It then increased …