论文标题
HAT-P-68B：围绕K5矮人星周围的过渡热木星
HAT-P-68b: A Transiting Hot Jupiter Around a K5 Dwarf Star
论文作者
论文摘要
我们报告了基于地面的HATNET调查对过境外部HAT-P-68B的调查，该调查的质量为0.724 $ \ pm $ 0.043 $ M_ {JUP} $，半径为1.072 $ \ pm $ 0.012 $ R_ {JUP} $。该行星处于圆形的p = 2.2984天轨道围绕中等明亮的V = 13.937 $ \ pm $ 0.030级k矮人质量0.673 $ 0.673 $+$ 0.020 $ 0.014 $ 0.014 $ M _ {\ odot} $，以及Radius 0.6726 $ 0.6726 $ $ 0.6726 $ 0.672 $ 0.000069 $ rod。通过使用Keck-i/ers，Flwo〜1.5m/TRES测量的FLWO〜1.2M望远镜，高精确的RVS获得的后续转运光度法证实了该系统的行星性质。 HAT-P-68处于$+3^{\ Circ} $的黄道纬度，并且在NASA TESS主要任务和K2任务的视野之外。 0.036 mag（$ r $ band）的较大过境深度使HAT-P-68B成为通过传输光谱法进行大气表征的有希望的目标。
We report the discovery by the ground-based HATNet survey of the transiting exoplanet HAT-P-68b, which has a mass of 0.724 $\pm$ 0.043 $M_{Jup}$, and radius of 1.072 $\pm$ 0.012 $R_{Jup}$. The planet is in a circular P = 2.2984-day orbit around a moderately bright V = 13.937 $\pm$ 0.030 magnitude K dwarf star of mass 0.673 $+$ 0.020 $-$0.014 $M_{\odot}$, and radius 0.6726 $\pm$ 0.0069 $R_{\odot}$. The planetary nature of this system is confirmed through follow-up transit photometry obtained with the FLWO~1.2m telescope, high-precision RVs measured using Keck-I/HIRES, FLWO~1.5m/TRES, and OHP~1.9m/Sophie, and high-spatial-resolution speckle imaging from WIYN~3.5m/DSSI. HAT-P-68 is at an ecliptic latitude of $+3^{\circ}$ and outside the field of view of both the NASA TESS primary mission and the K2 mission. The large transit depth of 0.036 mag ($r$-band) makes HAT-P-68b a promising target for atmospheric characterization via transmission spectroscopy.
