论文标题
在具有多部门苔丝光度法的热木星系统中搜索行星。 I.没有行星系统中的Kelt-18，Kelt-23，Kelt-24，Kelt-24，卡塔尔-8，WASP-62，WASP-100，WASP-100，WASP-119和WASP-126
Search for planets in hot Jupiter systems with multi-sector TESS photometry. I. No companions in planetary systems KELT-18, KELT-23, KELT-24, Qatar-8, WASP-62, WASP-100, WASP-119, and WASP-126
论文作者
论文摘要
紧密轨道上的巨型行星的起源，即所谓的热木星，是行星形成和进化论中的一个持久问题。答案似乎隐藏在那些仅部分理解的系统的架构中。我们使用来自过渡系外行星卫星的多部门时间序列光度法，我们在Kelt-18，Kelt-23，Kelt-23，Kelt-24，Kelt-24，Qatar-8，WASP-62，WASP-100，WASP-100，WASP-119和WASP-126行星系统中搜索了其他行星。我们的同质分析消除了在KELT-23和WASP-62系统中的过渡伴侣的存在，以及其余的伴侣的存在，并在其余的伴侣中降至迷你核或海王星。过境时序分析没有显示出所有研究的热木星的长期趋势或周期性扰动的迹象，包括在文献中声称与Keplerian模型偏离的WASP-126 B。样本行星的孤独表明，有利于高分子迁移机制，这些机制可能使它们进入了当今观察到的紧密轨道。作为我们研究的副产品，对6个系统的精度有了很大的提高，重新确定了过境光曲线参数。对于Kelt-24 B，联合分析使我们对其轨道偏心率更加限制。
Origins of giant planets on tight orbits, so called hot Jupiters, are a long-lasting question in the planetary formation and evolution theory. The answer seems to be hidden in architectures of those systems that remain only partially understood. Using multi-sector time-series photometry from the Transiting Exoplanet Survey Satellite, we searched for additional planets in the KELT-18, KELT-23, KELT-24, Qatar-8, WASP-62, WASP-100, WASP-119, and WASP-126 planetary systems using both the transit technique and transit timing method. Our homogenous analysis has eliminated the presence of transiting companions down to the terrestrial-size regime in the KELT-23 and WASP-62 systems, and down to mini-Neptunes or Neptunes in the remaining ones. Transit timing analysis has revealed no sign of either long-term trends or periodic perturbations for all the studied hot Jupiters, including the WASP-126 b for which deviations from a Keplerian model were claimed in the literature. The loneliness of the planets of the sample speaks in favour of the high-eccentricity migration mechanism that probably brought them to their tight orbits observed nowadays. As a byproduct of our study, the transit light curve parameters were redetermined with a substantial improvement of the precision for 6 systems. For KELT-24 b, a joint analysis allowed us to place a tighter constraint on its orbital eccentricity.
