2039298

Target RA (J2000): 146.114532 and deg Target Dec (J2000): -35.10444 and deg Gaia GMag: 10.16 Programme ID: CH_PR130056 Programme Manager: OSBORN PI of observing programme: Benz Title of programme: CHATEAUX - CHeops And TEss vAlidate Unconfirmed eXoplanets [PILOT] 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). CHATEAUX envisions passing this data to the community. This will be a pilot to test the programmatic ability of the program before being fully implemented at a later date (including in the extended mission). [truncated! Please see actual data for full text]

目标赤经（J2000坐标系）：146.114532 度，目标赤纬（J2000坐标系）：-35.10444 度 盖亚G星等（Gaia GMag）：10.16 项目编号：CH_PR130056 项目主管：OSBORN 观测项目首席研究员：Benz 项目标题：CHATEAUX——利用Cheops与TESS验证未确认系外行星先导项目 [PILOT] 摘要：绝大多数凌日系外行星巡天卫星（Transiting Exoplanet Survey Satellite, TESS）的目标天体（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。此类未确认候选体数量极多，即便通过严格筛选以确保目标为小型行星，仍有大量未被验证的TESS候选体在任意时段处于凌星状态。CHATEAUX项目提议，对经过筛选与排序的TESS目标天体集合开展优先级为P3的时间敏感型凌日系外行星巡天卫星配套任务（CHaracterising ExOPlanets Satellite, Cheops）观测，此类观测可被安排在更高优先级的时间敏感Cheops观测任务的间隙中执行。我们预计这些填补式观测将为TESS候选体提供极具科学价值的观测数据，包括轨道历元改进、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排除验证。CHATEAUX项目计划将此类数据向天文界公开。本项目为先导试验项目，旨在测试项目流程的可行性，以便在后续阶段（包括任务扩展阶段）全面推进该计划。 【内容已截断！完整文本请查看原始数据】