论文标题
两个行星横跨附近的K矮人GL 414A的宜居区
Two Planets Straddling the Habitable Zone of The Nearby K Dwarf Gl 414A
论文作者
论文摘要
我们介绍了绕附近的两个行星（d = 11.9 PC）K7矮人GL 414A的发现。 GL 414A B是一个带有M $ _B \ sin {i_b} = 9.28^{+3.19} _ { - 2.54} $ M $ _ \ oplus $和半超轴的0.24 $ \ pm pm $ 0.01 au的半轴。 GL 414a C是一个亚湿质量星球，具有$ M_C \ sin {I_C} = 59.48^{+9.98} _ { - 9.69} $ M $ _ \ oplus $和半轴轴的半轴，为1.43 $ \ pm $ 0.06 au。我们共同分析了来自凯克/雇员和Lick天文台的自动化行星查找器的径向速度数据，以及Kelt的光度数据，以检测两个行星以及两个与旋转调节活性和恒星的长期磁性活性周期相关的其他信号。该系统中的外行星可能是未来直接成像任务的潜在候选者。
We present the discovery of two planets orbiting the nearby (D=11.9 pc) K7 dwarf Gl 414A. Gl 414A b is a sub-Neptune mass planet with M$_b \sin{i_b} = 9.28^{+3.19}_{-2.54}$ M$_\oplus$ and a semi-major axis of 0.24 $\pm$ 0.01 au. Gl 414A c is a sub-Saturn mass planet with $M_c \sin{i_c} = 59.48^{+9.98}_{-9.69}$ M$_\oplus$ and a semi-major axis of 1.43 $\pm$ 0.06 au. We jointly analyzed radial velocity data from Keck/HIRES and the Automated Planet Finder at Lick Observatory, as well as photometric data from KELT, to detect the two planets as well as two additional signals related to the rotationally-modulated activity and the long term magnetic activity cycle of the star. The outer planet in this system may be a potential candidate for future direct imaging missions.
