2541661

Target RA (J2000): 7.975187 and deg Target Dec (J2000): -56.96511 and deg Gaia GMag: 9.79 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）：7.975187 度；目标赤纬（J2000坐标系）：-56.96511 度；盖亚G星等（Gaia GMag）：9.79；项目编号：CH_PR149000；项目主管：OSBORN；观测项目首席研究员（Principal Investigator，PI）：Benz；项目名称：SoM——CHEOPS与TESS验证未确认系外行星；摘要：绝大多数TESS感兴趣目标（TESS Objects of Interest，TOIs）尚未得到确认，其部分原因在于缺乏后续观测支持。此类目标数量极为庞大，即便通过严格筛选以确保目标为小型行星，仍有大量未确认的TESS候选体处于凌星状态中。CHATEAUX项目提议，对经过筛选与排序的TOIs集合开展优先级为P3的紧急CHEOPS（系外行星特征卫星）观测，此类观测可在优先级更高的紧急CHEOPS观测任务间隙进行排期。我们预计这类补位观测将为TOI候选体带来富有科学价值的观测成果，包括轨道历元精修、凌星时间变化（Transit Timing Variations，TTV）探测、半径精度提升，以及假阳性误判概率优化——这得益于对色度偏移与质心偏移的有效排除。【文本已截断！完整内容请查看原始数据】