Differential Rotation in Young Low-mass Stars

A. Collier Cameron, J.R. Barnes, L. Kitchatinov, J-F. Donati

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    Abstract

    Multi-line Doppler imaging methods allow us to image young, rapidly rotating stars brighter than about V = 11.5, with ~ 3 degrees surface resolution. We have recently measured the latitude dependence of the surface rotation rate in three young G and K stars by cross-correlating Doppler images reconstructed from data sets secured several days apart. As a result, new theoretical models of solar and stellar internal rotation can be tested directly against the form, amplitude and spectral-type dependence of differential rotation in both Sun and stars. We present new maps of AB Dor, PZ Tel and RX J1508.6-4423, which all show a solar-like differential rotation pattern and rate of surface shear.
    Original languageEnglish
    Title of host publicationIn: Procs of 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, ASP Conference Series 223
    PublisherAstronomical Society of the Pacific
    Pages251-60
    ISBN (Print)1-58381-055-2
    Publication statusPublished - 2001

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