标题： 近红外凌星光度观测太阳系外行星HAT-P-54b 显示英文标题

标题： Near-Infrared Transit Photometry of Extra-Solar Planet HAT-P-54b

摘要： 本文介绍了对太阳系外行星HAT-P-54b的凌日事件的近红外测光观测结果。 使用日本西播磨天文台的Nayuta 2米望远镜和西播磨红外相机（NIC）进行了精确的近红外测光。 在每个波段内拍摄了170张J-、H-和Ks波段的图像，耗时196分钟。 在凌日事件期间，行星系统的通量被观测到减少。 虽然Ks波段的凌日深度与r波段相似，但J-和H波段的凌日深度比Ks波段更深。 我们构建了行星大气的简单模型，并发现观测到的凌日深度可以通过包含H2S分子的膨胀大气很好地再现。 显示英文摘要

摘要： The results of near-infrared photometric observations of a transit event of an extrasolar planet HAT-P-54b are presented herein. Precise near-infrared photometry was carried out using the Nayuta 2 m telescope at Nishi-Harima Astronomical Observatory, Japan and Nishi-harima Infrared Camera (NIC). 170 J-, H-, and Ks-band images were taken in each band in 196 minutes. The flux of the planetary system was observed to decrease during the transit event. While the the Ks-band transit depth is similar to that in the r-band, the J- and H-band transits are deeper than those in the Ks-band. We constructed simple models of the planetary atmosphere and found that the observed transit depths are well reproduced by inflated atmosphere containing H2S molecule.