Échelle diagrams and period spacings of g modes in ? Doradus stars from four years of Kepler observations
Échelle diagrams and period spacings of g modes in ? Doradus stars from four years of Kepler observations
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?chelle 图和 g 模式的周期间隔？
DOI：
10.1051/epjconf/201510101005
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发表时间：
2015
影响因子：
--
通讯作者：
Bedding T
中科院分区：
文献类型：
--
作者：
Bedding T
我们使用开普勒任务的光度学来研究γdo Radus恒星的振荡。一些恒星显示出非常清晰的g模序列，我们使用周期谢尔图来测量周期间隔，并确定ℓ=1和ℓ=2的旋转分裂多重态。我们发现，由于对流核心外化学成分的梯度，与常规周期间隔的偏差很小。我们还发现，恒星的周期间隔作为周期的函数呈现出很强的线性趋势，这与相对较快的自转一致。总体而言，结果表明，将星震学应用于一系列γDor恒星是可能的。
We use photometry from theKeplerMission to study oscillations inγDo radus stars. Some stars show remarkably clear sequences of g modes and we use period échelle diagrams to measure period spacings and identify rotationally split multiplets with ℓ = 1 and ℓ = 2. We find small deviations from regular period spacings that arise from the gradient in the chemical composition just outside the convective core. We also find stars for which the period spacing shows a strong linear trend as a function of period, consistent with relatively rapid rotation. Overall, the results indicate it will be possible to apply asteroseismology to a range ofγDor stars.