类太阳恒星的星震分析面临的挑战
Challenges for asteroseismic analysis of Sun-like stars
摘要：
类太阳恒星的星震学正在迅速发展，例如，CoRoT飞行任务提供的新数据和地面活动的继续。美国宇航局的开普勒任务也有令人兴奋的前景，它将允许对数百个类似太阳的目标进行星震研究，在某些情况下持续长达几年的时间。地震模式参数是对恒星及其内部结构进行推断所需的输入数据。在本文中，我们将讨论的容易程度，它将有可能提取估计的个别模式参数，依赖于质量，年龄和视觉亮度的明星。我们的研究结果是普遍适用的，但是，我们期待在即将到来的开普勒观测的背景下模式的可探测性。为了使我们的讨论更有说服力，我们对各种地震参数进行了预测。要做到这一点，我们使用简单的经验标度关系和详细的脉动计算的随机激励和阻尼特性的太阳一样的p模式。这里讨论的个别p模式的参数提取相关的问题是模式的可探测性，恒星活动周期的可探测性和影响，以及测量旋转分裂组件的属性的能力，这取决于恒星的旋转特性的相对重要性和阻尼的随机激励p模式。
英文摘要：
Asteroseismology of Sun-like stars is undergoing rapid expansion with, for example, new data from the CoRoT mission and continuation of ground-based campaigns. There is also the exciting upcoming prospect of NASA's Kepler mission, which will allow the asteroseismic study of several hundred Sun-like targets, in some cases for periods lasting up to a few years. The seismic mode parameters are the input data needed for making inference on stars and their internal structures. In this paper we discuss the ease with which it will be possible to extract estimates of individual mode parameters, dependent on the mass, age, and visual brightness of the star. Our results are generally applicable; however, we look at mode detectability in the context of the upcoming Kepler observations. To inform our discussions we make predictions of various seismic parameters. To do this we use simple empirical scaling relations and detailed pulsation computations of the stochastic excitation and damping characteristics of the Sun-like p modes. The issues related to parameter extraction on individual p modes discussed here are mode detectability, the detectability and impact of stellar activity cycles, and the ability to measure properties of rotationally split components, which is dependent on the relative importance of the rotational characteristics of the star and the damping of the stochastically excited p modes.
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