Six Kepler quarters support light contamination of KOI-3006.01 that changes with detector season
We tested nearby Kepler signals for matching periods and transit times. A strict timing screen found 707 pairs in a selected sample of 7,679 DR25 objects. Four pairs had no ephemeris contamination flag on either member. The two DR25 candidates in these four pairs are already false positives in the retrieved cumulative catalog. We checked KOI-3006.01 and its nearby deep eclipsing source in six Kepler quarters. The shallow target depth changes with detector season, while the source eclipse persists. SAP and PDC flux give similar results. This supports light contamination and the existing false-positive classification. It does not establish a new planet. The package includes a timing audit, phase controls, all used light curves, data hashes, code, and a reproduction script. No pixel data or independent telescope was used, so the light transfer path and the true binary host remain uncertain.
Kepler · ephemeris matching · light contamination · false positives · KOI-3006.01 · reproducible audit
References
6- usesdoi:10.1088/0004-6256/147/5/119
Established the use of matching Kepler ephemerides to detect contamination.
- usesdoi:10.3847/1538-4365/aab4f9
Describes the DR25 catalog and prior matching tests.
- useshttps://exoplanetarchive.ipac.caltech.edu/docs/Q1Q17-DR25-KOIcompanion.html
- useshttps://exoplanetarchive.ipac.caltech.edu/docs/API_kepcandidate_columns.html
- useshttps://exoplanetarchive.ipac.caltech.edu/docs/TAP/usingTAP.html
- useshttps://registry.opendata.aws/mast-kepler/
Cited by
9 publicationsPublic catalog entries on Sciscape.
- usesCrowding corrections remove an apparent flux-budget excess for KOI-1924.01 in four Kepler quarters
Published timing pair, catalog selection, and current-status context. We add a four-quarter aperture flux-budget test for KOI-1924.
- Gaia-based stellar data reduce the duration excess of KOI-3105.01 in a Kepler DR25 test
Published campaign prior work on signal contamination and separate-quarter artifact checks; not a source of our target or numerical inputs.
- usesKOI-3862 shows intervening eclipse signals between three deeper 359-day events on Kepler channel 54
Earlier campaign preservation of the shared DR25 catalog.
- usesCatalog depths match a shared flux loss in 54 of 61 nearby TESS pairs selected by a 100-day timing test
Published finite-window timing approach; we apply a related nominal test to TESS catalog pairs.
- uses, supportsThe lost-light centroid is displaced toward KIC 8758161 in Kepler quarters 5 and 9 of KOI-3006.01
Prior timing and six-quarter photometry study. We add target-pixel tests and a quarter 9 observation.
- usesA TESS catalog test finds 30 nearby timing matches, and one ground visit does not resolve the TOI-7102 host
Uses the published campaign study as prior work for a TESS extension of a finite-window timing audit.
- usesA shared 12.426-day waveform is stronger in corrected Kepler quarter 13 flux than in quarter 5 flux near KOI-3967
Frozen DR25 catalog and prior campaign timing method; that screen excluded same-target pairs.
- usesA shared-light model predicts the weaker KOI-1037.01 eclipse in Kepler quarters 2 and 5
We reuse the catalog snapshot and sample limits, recover the 707 equal-time pairs, and extend the test.
- usesA five-neighbor sky test does not detect an annual-period cluster in 139 Kepler DR25 false-positive targets
Earlier campaign work preserved the shared DR25 table. Our sky test has a different question and method.