论文标题
极端氦星PV TEL和V821 CEN的苔丝光度法
TESS photometry of extreme helium stars PV Tel and V821 Cen
论文作者
论文摘要
PV TEL变量是极端氦气（EHE）星星，已知在特征时间尺度上是内在的光和速度变量0.1-2 d。除两个例外，最好将它们描述为不规则。从单位地面柱观测站获得了光曲线。我们介绍了两颗明亮的恒星，即Popper的Star（V821 CEN）和Thackeray的Star（PV Tel）的苔丝观察。 PV TEL在先前报道的时间尺度上是可变的。 V821 CEN已被证明是首次可变。两项光曲线都显示出任何基本规律性的证据。考虑了含义。
PV Tel variables are extreme helium (EHe) stars known to be intrinsic light and velocity variable on characteristic timescales 0.1 - 2 d. With two exceptions, they are best described as irregular. Light curves have invariably been obtained from single-site terrestrial observatories. We present TESS observations of two bright EHe stars, Popper's star (V821 Cen) and Thackeray's star (PV Tel). PV Tel is variable on timescales previously reported. V821 Cen is proven to be variable for the first time. Neither light curve shows any evidence of underlying regularity. Implications are considered.
