论文标题

恒星旋转周期的光度法和呼吸震次测量的荟萃分析:92开花器小型震中靶标的伦敦量表期间期刊,自相关函数,小波和旋转分裂分析

Meta-analysis of photometric and asteroseismic measurements of stellar rotation periods: the Lomb-Scargle periodogram, autocorrelation function, wavelet and rotational splitting analysis for 92 Kepler asteroseismic targets

论文作者

Lu, Yuting, Benomar, Othman, Kamiaka, Shoya, Suto, Yasushi

论文摘要

我们对92个基普勒太阳能主序列恒星进行光度(LOMB-SCARGLE周期图,自相关和小波)和Asteroseissic分析,以了解测得的恒星旋转周期的可靠性。我们专注于没有报道恒星伴侣的70颗恒星,并根据Lomb-Scargle时期的季度到季度的差异和紫心异性期的精度将它们分为四组。我们介绍了这些恒星的光度法和小意术约束之间的详细个人比较。我们发现,大多数目标在光度期间表现出显着的季度差异,这表明应将光度估计的周期视为真实恒星旋转期的简化表征,尤其是在纬度差异旋转的情况下。另一方面,在光度期间,恒星的季度差异相对较小,大多数恒星的恒星具有一致的星空和光学估计旋转周期的一致值。我们还确定了十多个恒星,其光度和小意次时期显着不同意,这可能是进一步个人研究的潜在有趣的目标。

We perform photometric (the Lomb-Scargle periodogram, autocorrelation, and wavelet) and asteroseismic analyses of 92 Kepler solar-like main-sequence stars to understand the reliability of the measured stellar rotation periods. We focus on the 70 stars without reported stellar companions, and classify them into four groups according to the quarter-to-quarter variance of the Lomb-Scargle period and the precision of the asteroseismic period. We present detailed individual comparison among photometric and asteroseismic constraints for these stars. We find that most of our targets exhibit significant quarter-to-quarter variances in the photometric periods, suggesting that the photometrically estimated period should be regarded as a simplified characterization of the true stellar rotation period, especially under the presence of the latitudinal differential rotation. On the other hand, there are a fraction of stars with a relatively small quarter-to-quarter variance in the photometric periods, most of which have consistent values for asteroseismically and photometrically estimated rotation periods. We also identify over ten stars whose photometric and asteroseismic periods significantly disagree, which would be potentially interesting targets for further individual investigations.

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