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The Dependence of Differential Rotation on Temperature and Rotation
J. R. Barnes, A. Collier Cameron, J. -F. Donati +3
We use Doppler imaging techniques to determine the dependence of starspot rotation rates on latitude in an homogeneous sample of young, rapidly-rotating solar analogues. A solar-li…
Photospheric magnetic field and surface differential rotation of the FK Com star HD 199178
P. Petit, J. -F. Donati, J. M. Oliveira +11
We present spectropolarimetric observations of the FK Com star HD 199178 obtained between 1998 December and 2003 August at the Telescope Bernard Lyot (Observatoire du Pic du Midi,…
Stellar polarimetry with ESPaDOnS
P. Petit, J. -F. Donati, The ESPaDOnS project team
ESPaDOnS is a new-generation cross-dispersed echelle spectropolarimeter, the commissioning phase of which is scheduled at the Canada-France-Hawaii Telescope (CFHT) for spring 2004.…
Differential rotation of cool active stars
P. Petit, J. -F. Donati, A. Collier Cameron
The surface differential rotation of active solar-type stars can be investigated by means of Doppler and Zeeman-Doppler Imaging, both techniques enabling one to estimate the short-…