Current status of Asteroseismology
Current status of Asteroseismology
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发表时间：
2000-11
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通讯作者：
H. Kjeldsen;T. Bedding
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作者：
H. Kjeldsen;T. Bedding
振荡频率是人们可以测量星星的最精确的特性，可能允许对恒星模型和演化理论进行详细的测试。我们简要回顾两类恒星的星震学。在盾牌座δ变星中，主要的问题是观测模式的识别和旋转的理论处理。在类太阳恒星中，主要的困难在于微小的振幅，但现在正在进行可靠的探测。这些证实了恒星的振荡近似于预期的水平，但表明振幅的尺度是1/g而不是L/M。我们还强调多站点活动的重要性。未来几年将发射几个空间飞行任务，为星震学带来令人兴奋的未来。
Oscillation frequencies are the most accurate properties one can measure for a star, potentially allowing detailed tests of stellar models and evolution theories. We briefly review asteroseismology for two classes of stars. In delta Scuti variables, the main problems are the identification of the observed modes and the theoretical treatment of rotation. In solar-like stars the main difficulty is the tiny amplitudes, but credible detections are now being made. These confirm that stars are oscillating at the approximately the expected levels, but suggest that amplitudes scale as 1/g rather than L/M. We also stress the importance of multi-site campaigns. Several space missions will be launched over the coming years, promising an exciting future for asteroseismology.