论文标题
tng：xxxvi的差距程序。测量Rossiter-McLaughlin效果并修改HAT-P-15，HAT-P-17，HAT-P-21，HAT-P-21，HAT-P-26，HAT-P-29怪异行星系统的物理和轨道参数
The GAPS Programme at TNG: XXXVI. Measurement of the Rossiter-McLaughlin effect and revising the physical and orbital parameters of the HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, HAT-P-29 eccentric planetary systems
论文作者
论文摘要
目的：我们旨在完善轨道和物理参数，并确定五个怪异的透明行星系统的天空投影行星轨道倾斜：HAT-P-15，HAT-P-17，HAT-P-17，HAT-P-21，HAT-P-21，HAT-P-26和HAT-P-26和HAT-P-29。除HAT-P-26外，每个系统都有一个热木星，该木星拥有海王星质量行星。方法：我们与HARPS-N光谱仪观察了这些行星的过境事件，获得了高精度的径向速度测量值，使我们能够测量每个目标系统的Rossiter-McLaughlin效应。我们使用了这些新的HARPS-N光谱和档案数据，包括来自Gaia的数据，以更好地表征出色的大气参数。使用17个新的Transit Light曲线重新计算了四个热木星的光度参数，该曲线是通过一系列中级望远镜获得的，以及来自Tess Space望远镜的数据。检查HATNET时间序列光度数据是否检查了目标恒星旋转周期及其自旋轴倾斜的特征。结果：根据对Rossiter-mclaughlin效应的分析，我们得出了HAT-P-15B，HAT-P-17B，HAT-P-17B，HAT-P-21B和HAT-P-21B和HAT-P-21B和HAT-P-29B的天空投影13，-26.3，-0.7，-26度。由于数据的质量，我们无法很好地限制HAT-P-26B的天空投影的倾斜度，尽管有偏向于Prograde Orbit。 HAT-P-21的恒星活动表明旋转周期为15.88天，这使我们能够确定其真正的未对准角（25度）。我们对五个系外行驶系统的物理参数的新分析返回的值与文献中存在的值兼容。使用Tess和可用的Transit光曲线，我们回顾了五个系统的轨道胚片，并确认HAT-P-26系统显示了公交时机的变化，这可能暂定归因于第三体的存在。
Aim: We aim to refine the orbital and physical parameters and determine the sky-projected planet orbital obliquity of five eccentric transiting planetary systems: HAT-P-15, HAT-P-17, HAT-P-21, HAT-P-26, and HAT-P-29. Each of the systems hosts a hot Jupiter, except for HAT-P-26 which hosts a Neptune-mass planet. Methods: We observed transit events of these planets with the HARPS-N spectrograph, obtaining high-precision radial velocity measurements that allow us to measure the Rossiter-McLaughlin effect for each of the target systems. We used these new HARPS-N spectra and archival data, including those from Gaia, to better characterise the stellar atmospheric parameters. The photometric parameters for four of the hot Jupiters were recalculated using 17 new transit light curves, obtained with an array of medium-class telescopes, and data from the TESS space telescope. HATNet time-series photometric data were checked for the signatures of rotation periods of the target stars and their spin axis inclination. Results: From the analysis of the Rossiter-McLaughlin effect, we derived a sky-projected obliquity of 13, -26.3, -0.7, -26 degree for HAT-P-15b, HAT-P-17b, HAT-P-21b and HAT-P-29b, respectively. Due to the quality of the data, we were not able to well constrain the sky-projected obliquity for HAT-P-26b, although a prograde orbit is favoured. The stellar activity of HAT-P-21 indicates a rotation period of 15.88 days, which allowed us to determine its true misalignment angle (25 degree). Our new analysis of the physical parameters of the five exoplanetary systems returned values compatible with those existing in the literature. Using TESS and the available transit light curves, we reviewed the orbital ephemeris for the five systems and confirmed that the HAT-P-26 system shows transit timing variations, which may tentatively be attributed to the presence of a third body.
