Differential Rotation in F Stars

Abstract

Differential rotation can be detected in single line profiles of stars rotating more rapidly than about $v\sin i=10$ km s${}^{-1}$ with the Fourier transform technique. This allows to search for differential rotation in large samples to look for correlations between differential rotation and other stellar parameters. I analyze the fraction of differentially rotating stars as a function of color, rotation, and activity in a large sample of F-type stars. Color and rotation exhibit a correlation with differential rotation in the sense that more stars are rotating differentially in the cooler, less rapidly rotating stars. Effects of rotation and color, however, cannot be disentangled in the underlying sample. No trend with activity is found.

4 pages, overview talk at the 5th Potsdam thinkshop, accepted by AN

References in corpus (5)

• The Dependence of Differential Rotation on Temperature and Rotation
• Rotation- and temperature-dependence of stellar latitudinal differential rotation
• Differential rotation in rapidly rotating F-stars
• Differential rotation of main sequence F stars
• First signatures of strong differential rotation in A-type stars

Cited by in corpus (8)

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• Powering Stellar Magnetism: Energy Transfers in Cyclic Dynamos of Sun-like Stars
• A realistic two-dimensional model of Altair
• Using rotation, magnetic activity and lithium to estimate the ages of low mass stars
• Gyroscopic pumping of large-scale flows in stellar interiors, and application to Lithium Dip stars
• Magnetic field and chromospheric activity evolution of HD75332: a rapid magnetic cycle in an F star without a hot Jupiter
• Impact of anti-solar differential rotation in mean-field solar-type dynamos -- Exploring possible magnetic cycles in slowly rotating stars
• Differential rotation of solar α sunspots and implications for stellar light curves