Journal
ASTRONOMISCHE NACHRICHTEN
Volume 328, Issue 10, Pages 1030-1033Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asna.200710880
Keywords
stars : activity; stars : imaging; stars : rotation; starspots
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Funding
- Science and Technology Facilities Council [PP/D000890/1] Funding Source: researchfish
- STFC [PP/D000890/1] Funding Source: UKRI
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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. (c) 2007 WILEY VCH Verlag GmbH & Co. KGaA, Weinheim.
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