2039183

Target RA (J2000): 179.939957 and deg Target Dec (J2000): -5.72172 and deg Gaia GMag: 11.61 Programme ID: CH_PR110048 Programme Manager: OSBORN PI of observing programme: Benz Title of programme: EXPLORE - Duos: Recovering long period duo-transiting planets with CHEOPS Abstract: The high-precision yet short-duration of TESS sectors means that many long-period planet candidates are found at high-SNR but on unknown periods. One specific type of such candidates are Duotransits - candidates with two transits separated by a large gap (as is the case for around 400 TESS candidates observing in the primary and extended missions). Here Cheops is perfectly placed to recover the periods of such long period planets by observing potential period aliases. In this program we propose to use this method to recover the periods of super-Earths and Neptunes around bright stars with Cheops. [truncated! Please see actual data for full text]

目标赤经（J2000.0坐标系）：179.939957 度
目标赤纬（J2000.0坐标系）：-5.72172 度
盖亚G星等：11.61
项目编号：CH_PR110048
项目主管：OSBORN
观测项目首席研究员：本茨（Benz）
项目名称：EXPLORE - 双凌系统：利用CHEOPS恢复长周期双凌行星轨道周期
摘要：凌日系外行星巡天卫星（Transiting Exoplanet Survey Satellite, TESS）的观测扇区兼具高精度与短时观测时长的特点，使得大量长周期系外行星候选体虽具备高信噪比（Signal-to-Noise Ratio, SNR）观测数据，却无法确定其轨道周期。此类候选体中存在一类特殊类型——双凌候选体，即两次凌星之间间隔极长的候选体（在TESS的主任务与扩展任务中，约有400颗此类候选体）。在此背景下，CHEOPS可通过观测潜在的周期混叠信号，精准测定这类长周期行星的轨道周期。本项目拟采用该方法，为明亮恒星周围的超级地球（super-Earth）与海王星级系外行星测定轨道周期。
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