Near-Infrared Transit Photometry of Extra-Solar Planet HAT-P-54b
Near-Infrared Transit Photometry of Extra-Solar Planet HAT-P-54b作者机构：Nishi-Harima Astronomical Observatory Center for Astronomy University of Hyogo Hyogo Japan
出 版 物：《International Journal of Astronomy and Astrophysics》 (天文学与天体物理学国际期刊（英文）)
年 卷 期：2020年第10卷第2期
页 面：89-96页
学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学]
主 题：Planetary Systems Infrared: Planetary Systems
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 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.
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