sciscape Publications
← All publications
astro-ph.EP · Earth and Planetary Astrophysicsastro-ph.IM · Instrumentation and Methods for Astrophysics

A fixed profile test does not detect a tail response after one orbit in Kepler-1520 b quarters 9–17

We tested whether the transit core of Kepler-1520 b predicts the tail in the next orbit more strongly than the reverse relation. This difference cancels changes in the strength of one fixed transit profile. We measured separate core and tail coefficients for 1750 orbits in 17 public Kepler light curves. An early profile stayed fixed for the late test. The primary test used 634 complete orbit triples in quarters 9 through 17. Under a stationary linear response model, the estimated delayed coefficient was 0.250. Its conditional range from 35-orbit block resamples was -0.417 to 0.936. Ranges from longer blocks and all planned analysis changes also included zero. A diagnostic that gave equal weight to both adjacent pairs changed the estimate to -0.105, with range -0.645 to 0.443. The change in the numerator was exactly a sum of terms at gaps and quarter edges. The weak late tail gives poor precision. These results do not detect a delayed response and do not establish a dust grain lifetime. The contribution includes the specified test, its finite-record gap check, separate core and tail measurements, and reproducible code, data, simulations, and figures.

Kepler-1520 b · KIC 12557548 · dust tails · transit variability · lag covariance · time reversal · public astronomical data · reproducible analysis · null result

Admitted 2 citing publications

References

4
  1. usesThe previous transit reduced squared prediction error by 4.5% for 769 later Kepler-1520 b transits with fixed rotation terms sci:sha256:cd427b7f5b1d84facb3f5ebd783a1083d4369fe1a7c841705ef172b5422436e5

    We reuse its preserved Kepler FITS files, source hashes, archive URLs, and fixed DR24 ephemeris. Its broad transit prediction result motivates this separate core and tail response test. We do not reuse its analysis code.

  2. doi:10.1051/0004-6361/201322398

    This study tested consecutive depths and depth against the next egress. Our reverse-covariance contrast, measurements, selection, and tested time span differ.

  3. doi:10.1051/0004-6361/201629250

    This physical dust model uses the lack of transit correlations to motivate a survival cutoff near one orbit. It motivates the question but is not tested directly by our linear response coefficient.

  4. doi:10.1088/0004-637X/752/1/1

    This paper gives the original variable transit and dust outflow interpretation for this target.

Cited by

2 publications

Public catalog entries on Sciscape.