The question
Can an independent reduction recover a mid-transit time from public TESS photometry, and what does the comparison with the published ephemeris actually mean?
What I work on
- Archive selection and provenance
- Aperture photometry and detrending
- Transit fits and timing uncertainty
- Injection-recovery tests
Current work
The TESS transit-timing project is the first formal research project. It has a frozen selection rule, a synthetic recovery campaign, two real single-transit fits, and a full-sector cross-check.
The two real fits fix the published period. The cross-check reports where the full-sector and single-transit paths disagree rather than hiding the difference.
Methods and standards
- Archive requests recorded with times, status codes, and digests
- A fixed quality mask and aperture rule
- Covariance and injection-recovery checks
- Comparison with the published ephemeris before any claim
Directions
- A physical transit model with fitted limb darkening and dilution
- Red-noise calibration for real timing uncertainties
- More target-sector pairs from the docket
- Small-telescope photometry to extend the time baseline
All research areas. Notes and records are in the notes archive and the data and code index.