论文标题
重新访问BD-06 1339b：可能由恒星活动引起的假阳性
Revisiting BD-06 1339b: A Likely False Positive Caused by Stellar Activity
论文作者
论文摘要
只要天文学家搜索系外行星，宿主恒星的内在变异性就会干扰可靠地检测和确认系外行星的能力。假阳性的一种特殊来源是存在恒星磁性或色层活性，可以模仿行星的径向速度反射运动。在这里，我们介绍了已知行星托管恒星BD-06 1339的光度数据分析的结果，这是由2分钟节奏的第6扇区期间在第6扇区期间观察到的。我们讨论了证据表明，观察到的3.9天的周期性径向速度签名可能是由恒星活动而不是行星伴侣引起的，因为光度数据中检测到的可变性与周期性信号一致。我们得出的结论是，先前报道的行星签名可能是由于恒星活动引起的假阳性信号的结果，并讨论了需要更多数据来确认这一结论的必要性。
As long as astronomers have searched for exoplanets, the intrinsic variability of host stars has interfered with the ability to reliably detect and confirm exoplanets. One particular source of false positives is the presence of stellar magnetic or chromospheric activity that can mimic the radial-velocity reflex motion of a planet. Here we present the results of a photometric data analysis for the known planet hosting star, BD-06 1339, observed by the Transiting Exoplanet Survey Satellite (TESS) during Sector 6 at 2 minute cadence. We discuss evidence that suggests the observed 3.9 day periodic radial velocity signature may be caused by stellar activity rather than a planetary companion, since variability detected in the photometric data are consistent with the periodic signal. We conclude that the previously reported planetary signature is likely the result of a false positive signal resulting from stellar activity, and discuss the need for more data to confirm this conclusion.
