WASP-35 and HAT-P-30/WASP-51: Reanalysis using TESS and Ground-based Transit Photometry
WASP-35 and HAT-P-30/WASP-51: Reanalysis using TESS and Ground-based Transit Photometry
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DOI：
10.3847/1538-3881/ac5b6a
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发表时间：
2022-03
期刊：
影响因子：
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通讯作者：
L. Bai;S. Gu;Xiao-bin Wang;Leilei Sun;C. Kwok;H. Hui
中科院分区：
文献类型：
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作者：
L. Bai;S. Gu;Xiao-bin Wang;Leilei Sun;C. Kwok;H. Hui
高精度的凌日观测为确定系外行星系统的物理特性提供了极好的机会。这些物理性质为揭示行星的内部结构、外部大气和动力学历史提供了许多信息。通过分析云南天文台1 m望远镜的TESS测光和地面观测资料以及文献资料，对凌日系统WASP-35和HAT-P-30/WASP-51的性质进行了修正。改进后的系统参数与以前的结果一致。此外，我们发现HAT-P-30 b/WASP-51 b的凌日显示出可能的时间变化，这不能用潮汐耗散和Rømer效应引起的衰减轨道来解释，而根据我们全面的动力学模拟，拱点岁差和额外的扰动体都可以重现这个信号。由于这两个系统都是有价值的目标，是适合于透射光谱，我们做了一些预测的大气性质的WASP-35 b和HAT-P-30 b/WASP-51 b的基础上新推导出的系统参数。
High-precision transit observations provide excellent opportunities for characterizing the physical properties of exoplanetary systems. These physical properties supply many pieces of information for unvealing the internal structure, external atmosphere, and dynamical history of the planets. We present revised properties of the transiting systems WASP-35 and HAT-P-30/WASP-51 through analyzing newly available TESS photometry and ground-based observations obtained at the 1 m telescope of the Yunnan Observatories as well as from the literature. The improved system parameters are consistent with previous results. Furthermore, we find that the transits of HAT-P-30b/WASP-51b show possible timing variation that cannot be explained by a decaying orbit due to tidal dissipation and the Rømer effect, while both apsidal precession and an additional perturbing body could reproduce this signal according to our comprehensive dynamical simulations. Because both systems are valuable targets that are suitable for transmission spectroscopy, we make some predictions for the atmospheric properties of WASP-35b and HAT-P-30b/WASP-51b based on the newly derived system parameters.