论文标题
苔丝狩猎年轻和成熟系外行星（百里香）II：SCO-CEN协会中的17 Myr Old Transiting Hot Jupiter
TESS Hunt for Young and Maturing Exoplanets (THYME) II: A 17 Myr Old Transiting Hot Jupiter in the Sco-Cen Association
论文作者
论文摘要
我们介绍了在10-20 Myr Old Sco-Cen OB协会中发现了一个过渡热木星旋转hip 67522（$ t_ {for} \ sim5650 $ k; $ m_* \ sim* \ sim 1.2 m _ {\ odot} $）。我们使用我们的自定义缺口行星搜索管道确定了苔丝数据中的跨度，并通过Spitzer的额外光度法，SOAR/Goodman，Salt/HRS，LCOGT/NRES，SMARTS/CHIRAN，SMARTS/CHIRON以及SOAR/HRCAM的Speckle Image来表征系统。我们将光度法建模为一个周期性的高斯过程，该过程的转移以考虑恒星的可变性，并找到6.9596 $^{+0.00000016} _ { - 0.00000015} $ days且半径为10.02 $^{+0.54} _ {+0.54} _ { - 0.53} _ { - 0.53} $ rus $ _ \ op op op op op oc op oc op oc op oc op oc op oc op oc oc op oc op oc oc oc oc oc oc。我们还确定了一个额外的候选行星的单个过境，其半径为8.01 $^{+0.75} _ { - 0.71} $ r $ _ \ oplus $，其轨道周期为$ \ gtrsim23 $ days。经过验证的行星HIP 67522 B目前是发现的最年轻的过境热木星，是传输光谱和径向速度随访研究的理想候选者，同时还表明，某些年轻的巨型行星要么在小轨道半径上形成，要么否则会迅速从disk的地层迁移。
We present the discovery of a transiting hot Jupiter orbiting HIP 67522 ($T_{eff}\sim5650$ K; $M_* \sim 1.2 M_{\odot}$) in the 10-20 Myr old Sco-Cen OB association. We identified the transits in the TESS data using our custom notch-filter planet search pipeline, and characterize the system with additional photometry from Spitzer, spectroscopy from SOAR/Goodman, SALT/HRS, LCOGT/NRES, and SMARTS/CHIRON, and speckle imaging from SOAR/HRCam. We model the photometry as a periodic Gaussian process with transits to account for stellar variability, and find an orbital period of 6.9596$^{+0.000016}_{-0.000015}$ days and radius of 10.02$^{+0.54}_{-0.53}$ R$_\oplus$. We also identify a single transit of an additional candidate planet with radius 8.01$^{+0.75}_{-0.71}$ R$_\oplus$ that has an orbital period of $\gtrsim23$ days. The validated planet HIP 67522 b is currently the youngest transiting hot Jupiter discovered and is an ideal candidate for transmission spectroscopy and radial velocity follow-up studies, while also demonstrating that some young giant planets either form in situ at small orbital radii, or else migrate promptly from formation sites farther out in the disk.
