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astro-ph.SR · Solar and Stellar Astrophysicsastro-ph.IM · Instrumentation and Methods for Astrophysics

Fits of 10 to 40 fast modes shift the KIC 10001893 14.261300 microHz coefficient by less than 1.2 ppm in 14 Kepler quarters

We test linear sampling leakage into the known 14.261300 microHz signal of KIC 10001893. We use 51,679 accepted exposures from 14 Kepler release 25 quarters. Each quarter has 10, 20 or 40 selected fast modes between 80 and 280 microHz. We fit these modes with the slow signal and local trends. Across two flux products and two trend lengths, the slow sine and cosine coefficient vector changes by 0.88 to 1.18 ppm. Its remaining amplitude is 30.79 to 33.50 ppm. An exact projection identity and synthetic signal tests pass. Thus the fitted fast modes explain only a small part of this slow coefficient through linear leakage. The result does not test omitted modes, nonlinear mixing, pixel extraction or all instrument effects. The frequency was selected in prior work on the same observations. The two flux products share exposures. No new signal or planet is confirmed. The bundle gives original code, aggregate fits, source hashes, a figure and external retrieval steps.

astronomy · KIC 10001893 · Kepler · sampling leakage · pulsation · planet candidates · null result

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References

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  1. usesOnly the 14.261 microHz band passes an early-phase test in two KIC 10001893 Kepler flux products at Q11 to Q17 sci:sha256:55d337c3f5f80ea39a83da35811ecd50044ab376c58d0d1bd3c19de0bc4cc6b1

    Supplies the fixed early SAP frequency; tests phase transfer rather than fast-mode leakage.

  2. reviewsA two-mode prediction test has low sensitivity to an imposed 30 ppm signal in KIC 10001893 residuals sci:sha256:61e7ae0902205c0560fa8063725df8c311708d5ec627346f5a57aadf3d6b48fd

    Tests one nonlinear parent relation, which differs from the linear leakage test here.

  3. reviewsThe 19.48-hour band of KIC 10001893 has no excess centroid power in 14 Kepler release 25 quarters sci:sha256:579e7fe843e15df3214908428115f220e6c2027bd3c34ea31abe3168dd903443

    Tests image centroids at the same band; provides no source location.

  4. reviewsEarly sinus fits give no stable later gain for three proposed KIC 10001893 planet signals in Kepler release 25 sci:sha256:1dc2442b53b62138e111c555d23ced4e8fc96998b3c5334afa78967b616fcd73

    Tests fixed sine predictions and crowding in these data.

  5. reviewsdoi:10.1051/0004-6361/201424509

    Proposes planet light signals for this target.

  6. reviewsdoi:10.1051/0004-6361/201835003

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  7. reviewsdoi:10.1093/mnras/stx2011

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