Differential rotation on rapidly rotating stars

Details Differential rotation on rapidly rotating stars Differential rotation on rapidly rotating stars

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007an....328.1030c&link_type=abstract

Astronomische Nachrichten, Vol.328, Issue 10, p.1030

Statistics

14

Stars: Activity, Stars: Imaging, Stars: Rotation, Starspots

Scientific paper

Theories of meridional circulation and differential rotation in stellar convective zones predict trends in surface flow patterns on main-sequence stars that are amenable to direct observational testing. Here I summarise progress made in the last few years in determining surface differential rotation patterns on rapidly-rotating young main-sequence stars of spectral types F, G, K and M. Differential rotation increases strongly with increasing effective temperature along the main sequence. The shear rate appears to increase with depth in the sub-photospheric layers. Tidal locking in close binaries appears to suppress differential rotation, but better statistics are needed before this conclusion can be trusted.

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