标题： 使用星震学空间数据建模盾牌座δ型变星 显示英文标题

标题： Modelling delta Scuti stars using asteroseismic space data

摘要： 在近年来，像COROT、Kepler或MOST这样的空间任务提供了非常精确的光度观测数据。 在$\delta$脉动变星的特殊情况下，观测到的频率谱有数百（如果不是数千的话）个模式，并且有明显的振幅分布。 在这项工作中，我们介绍了新的方法来模拟这些观测结果并给出了获得的结果。 我们搜索了观测数据中的规律性模式，这产生了一些类似于大间距的东西。 这使得可以减少恒星在赫罗图中的可能位置，从而得出一个前所未有的准确的平均密度值，适用于这种类型的孤立恒星。 最后，我们回答了一个$\delta$脉动变星是否稳定，尽管所有观测到的频率都被同时激发。 显示英文摘要

摘要： In the last years, space missions such as COROT, Kepler or MOST have provided very accurate photometric observational data. In the particular case of $\delta$ Scuti stars, the observed frequency spectra have hundreds (if not thousands) of modes and a clear amplitude distribution. In this work we present new techniques for modelling these observations and the results obtained. We searched for regular patterns in the observational data, which yields something resembling the large separation. This allows to reduce the possible positions of the star in the HR diagram, yielding a value of the mean density with an accuracy never reached before for isolated stars of this type. Finally, we answer whether a $\delta$ Scuti star is stable despite all of the observed frequencies are simultaneously excited.