2306938

Target RA (J2000): 51.365330 and deg Target Dec (J2000): 13.50739 and deg Gaia GMag: 10.37 Programme ID: CH_PR149000 Programme Manager: OSBORN PI of observing programme: Benz Title of programme: SoM - CHeops And TEss vAlidate Unconfirmed eXoplanets Abstract: The vast majority of TESS Objects of Interest remain unconfirmed in part due to a lack of follow-up observations. There are so many such targets that even with strict filters to ensure targets are small planets several unconfirmed TESS candidates are transiting at any one time. CHATEAUX proposes to use time-critical P3 Cheops observations of a filtered and ranked set of TOIs which would be able to be scheduled between higher-priority time-critical Cheops observations. We expect these filler observations will produce useful scientific observations of TOI candidates including ephemeris improvements TTV detection improved radius precision and improved false positive probabilities (thanks to both ruling our chromaticity and centroid shifts). [truncated! Please see actual data for full text]

目标赤经（J2000坐标系）：51.365330 度；目标赤纬（J2000坐标系）：13.50739 度；盖亚G星等（Gaia GMag）：10.37；项目编号：CH_PR149000；项目主管：OSBORN；本观测项目首席研究员：Benz
项目名称：SoM——CHEOPS与TESS联合验证未确认系外行星项目
摘要：绝大多数凌日系外行星巡天卫星（Transiting Exoplanet Survey Satellite, TESS）的感兴趣天体（TESS Objects of Interest, TOIs）尚未得到确认，部分原因在于缺乏后续观测支持。此类目标数量极多，即便通过严格筛选以确保候选体为小型行星，任意时刻仍有多个未确认的TESS候选天体处于凌星状态。CHATEAUX项目提议对经筛选与排序的TOIs集合开展时间敏感型P3级CHEOPS观测，此类观测可安排在优先级更高的时间敏感型CHEOPS观测间隙进行。我们预计这些填补观测间隙的任务将为TOI候选天体带来富有科学价值的观测成果，包括星历表优化、凌星时间变化（Transit Timing Variations, TTV）探测、半径精度提升，以及假阳性概率修正（通过排除色度异常与质心偏移两种干扰源实现）。
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