论文标题
部分可观测时空混沌系统的无模型预测
Asteroseismology of PG 1541$+$651 and BPM 31594 with TESS
论文作者
论文摘要
我们介绍了来自TESS的两个已知ZZ CETI星的光度数据，PG 1541+651和BPM 31594。在TESS之前，这两个物体仅对地面设施的短期观察到分别检测到三个时期和一个周期。 TESS数据允许检测多个周期，PG 1541 $+$ 651，而BPM 31594允许我们进行详细的Asterosemologicy研究。对于这两个物体，我们都发现了一个代表性的星形震动模型，其典型恒星质量〜0.61 msun和厚的氢化膜，比10^（-5.3）m_*厚。在傅立叶变换中的三胞胎的检测也使我们能够估计平均旋转周期，对于PG 1541+651，BPM 31594的pg 1541+651和11.6 h，这与其他ZZ CETI星的值范围一致。
We present the photometric data from TESS for two known ZZ Ceti stars, PG 1541+651 and BPM 31594. Before TESS, both objects only had observations from short runs from ground-based facilities, with three and one period detected, respectively. The TESS data allowed the detection of multiple periodicities, 12 for PG 1541$+$651, and six for BPM 31594, which enables us to perform a detailed asteroseismological study. For both objects we found a representative asteroseismic model with canonical stellar mass ~ 0.61 Msun and thick hydrogen envelopes, thicker than 10^(-5.3) M_*. The detection of triplets in the Fourier transform also allowed us to estimate mean rotation periods, being ~22 h for PG 1541+651 and 11.6 h for BPM 31594, which is consistent with range of values reported for other ZZ Ceti stars.
