2540437

Target RA (J2000): 305.065338 and deg Target Dec (J2000): -7.41169 and deg Gaia GMag: 9.22 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）：305.065338 度；目标赤纬（J2000坐标系）：-7.41169 度；盖亚G星等：9.22；项目编号：CH_PR149000；项目主管：OSBORN；观测项目首席研究员：Benz；项目名称：SoM——CHeops与TEss验证未确认系外行星（SoM - CHeops And TEss vAlidate Unconfirmed eXoplanets）。绝大多数凌日系外行星巡天卫星（Transiting Exoplanet Survey Satellite, TESS）的候选目标（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。此类未确认候选体数量众多，即便经过严格筛选以确保目标为小型行星，仍会有多个未确认的TESS候选目标在任意时段处于凌星状态。CHATEAUX项目提议，在优先级更高的应急Cheops观测任务间隙，利用优先级3（P3）的应急观测时长，对经过筛选与排序的TESS候选目标集开展观测。我们预计这些填充式观测将可获取关于TESS候选目标的有效科学数据，包括轨道历元精修、凌星时间变化（Transit Timing Variations, TTV）探测、半径测量精度提升，以及假阳性概率优化——这得益于对色度偏移与质心偏移的有效排除。[已截断！完整文本请查阅原始数据]