Selection effects in the TESS hot-Jupiter sample

Determine how follow-up incompleteness and radial-velocity confirmation biases in the TESS hot-Jupiter sample affect the inferred age distribution of hot-Jupiter host stars at the population level.

Background

The TESS sample provides a relatively homogeneous and all-sky collection of hot Jupiters, but it is not free from observational selection effects. In particular, systems requiring follow-up observations may be subject to incompleteness, while radial-velocity confirmation can favor particular types of host stars. The paper leaves unresolved how these effects influence the population-level comparison between hot-Jupiter hosts and field stars and points to more uniform future surveys as a way to address the issue.

References

While the TESS HJ sample is to date the most homogeneous sample available, it may also be affected by selection effects, such as the follow-up incompleteness and RV confirmation biases, although it is unclear how such selection effects affect the age of HJ hosts at the population level. We leave it to some future studies that make use of a more uniform HJ sample, such as the TESS Grand Unified Hot Jupiter Survey \citep{Yee2022}.

— Are Hot Jupiters Tidally Disrupted During Stellar Main Sequence?  (2608.12790 - Hu et al., 13 Aug 2026) in Section 3, The TESS Sample