模拟AB Doradus和LQ Hydrae中表面差异旋转的时间变化
Modelling the time variation of the surface differential rotation in AB Doradus and LQ Hydrae
摘要：
年轻的快速旋转的晚型恒星AB Dor和LQ Hya的多普勒图像序列显示，它们的赤道角速度和表面差异旋转的幅度随时间变化。这样的变化可以建模，以获得恒星对流区内的方位角磁应力的强度信息。本文在平均场论的框架内介绍了一个简单的模型，并简要地讨论了它在类太阳恒星中的应用结果。
英文摘要：
Sequences of Doppler images of the young, rapidly rotating late-type stars AB Dor and LQ Hya show that their equatorial angular velocity and the amplitude of their surface differential rotation vary versus time. Such variations can be modelled to obtain information on the intensity of the azimuthal magnetic stresses within stellar convection zones. We introduce a simple model in the framework of the mean-field theory and discuss briefly the results of its application to those solar-like stars.
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