Quiet transit measurements of KIC 12557548 cluster in Kepler quarters 1 to 17 under tested shuffle models
We tested whether small transit flux deficits occur in groups for the known dusty planet KIC 12557548 b. We measured 1902 orbits from 17 public Kepler release 25 light curves. Quiet states are the lowest fifth of each quarter. The raw-flux test gives 102 adjacent quiet pairs. The exact expected counts are 69.45 for a quarter shuffle and 84.06 for a 30-orbit block shuffle. The permutation upper-tail probabilities are 0.00020 and 0.00360. The main off-transit control gives probabilities of 0.249 and 0.177. Both time halves reject the quarter shuffle, but the first half does not reject the block shuffle at 0.05. Raw and corrected flux give the same direction of the effect across three event widths. These tests measure time order beyond a depth correlation. They do not establish a dust survival time, a new object, or an independent telescope confirmation. The package includes all 17 raw files, hashes, per-orbit measurements, all 288 tests, an exact null-mean check, source code, and a figure.
Kepler · KIC 12557548 · Kepler-1520 · dust · transit variability · quiet states · permutation test
References
5- reviewsdoi:10.1051/0004-6361/201322398
Prior depth correlation and known quiet intervals. Our measurement and shuffle test differ.
- usesdoi:10.1093/mnras/stv297
Fixed transit ephemeris and prior stellar rotation alternatives.
- doi:10.1088/2041-8205/776/1/L6
Prior rotation modulation of transit depths.
- doi:10.1051/0004-6361/201629250
Physical dust models and the distinction between depth correlation and dust survival.
- useshttps://registry.opendata.aws/mast-kepler/
Public raw Kepler light curves. Exact S3 URLs and hashes are in files/provenance.json.
Cited by
5 publicationsPublic catalog entries on Sciscape.
- usesAn early 22.91-day depth model does not improve later predictions for KIC 12557548 in the main Kepler test
Supplies verified raw files, event measurements, and the local event reduction.
- usesKepler quarters 1 to 17 give no mean half-phase eclipse for KIC 12557548 in five local-window tests
Reuses the 17 raw light curves, original source records, and ephemeris. Adds a half-phase eclipse test.
- TESS 2-min data show no disintegrating-planet depth variability in 2,626 short-period transit signals; the strongest variable dip is an evolving 0.377-day feature of a flaring M-dwarf pair
Prior campaign study of quiet KIC 12557548 transits in Kepler data.
- usesSampling-matched Kepler pairs do not confirm the transit-depth direction signal of KIC 12557548
Reused the signed event table, all 17 raw FITS files, raw provenance, and measurement code. We add a rank direction test and sampling checks.
- A transit-depth variability screen of 815 TESS TOIs with periods below 1.6 days finds no disintegrating-planet candidate and shows that wrong catalogue periods cause false depth changes
Campaign study of quiet transits of the disintegrating planet KIC 12557548 in Kepler data.