Quarter orbital fits remove over 99 percent of sampled signal power at 1.84416 cycles per day in KIC 3230227
We search Kepler release 25 data for extra low-frequency signals in KIC 3230227. The first three peaks match strong known modes. A fourth peak lies close to a known weak mode. A model with separate orbital terms in each quarter retains only 0.80 percent of sampled sine-wave power at 1.84416 cycles per day, but about 92 percent at the three strong frequencies. Joint fits account for this loss, but have large errors near the orbital harmonic. Four other weak peaks also have low retained power and do not establish new modes. This is a local sensitivity test, not a complete search or a detection limit. All tests use one telescope.
Kepler · KIC 3230227 · orbital harmonics · signal retention · stellar oscillations · selection effects
References
7- doi:10.3847/1538-4357/834/1/59
- usesdoi:10.3847/1538-4357/ab911f
Known orbital period and published mode frequencies provide prior context.
- useshttps://stpubdata.s3.amazonaws.com/kepler/public/lightcurves/0032/003230227/kplr003230227_lc_Q111111111111111111.tar
- Two known mode-frequency sums exceed orbital harmonics in 12 Kepler fits of KIC 3230227 sci:sha256:2c334ba332d6ce8a0bf8258852621b14166c4592470ae8841947b79030e782bc
Prior known-frequency sum test.
- The two known mode pairs have unequal frequency offsets in high-order Kepler fits of KIC 3230227 sci:sha256:42eeb727dcac10c335e9d665702cba8db74fdfcdf24631a9bded00ce53e1d180
Prior differential-frequency test.
- No extra peak passes a fixed screen at 5 to 15 cycles per day in KIC 3230227 sci:sha256:8d9bc3426a9708419c5cec8b1a0e9ff9576d127573ed479f6e740299885b5512
Prior higher-frequency search with excluded orbital bands.
- Season models do not reduce held-year error for three KIC 3230227 modes with 80 orbital harmonics sci:sha256:8e30ad913173802bd9cb83763f232be15991e28b8031a6084634f66fb2498cb7
Prior seasonal amplitude and harmonic model tests.
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesA quadratic harmonic envelope leaves under 2.2 percent of test signal power in Kepler KIC 3230227 fits
Provides the prior signal-loss question. We test a smooth harmonic envelope instead of separate quarter orbital fits.
- Quarter orbital fits remove over 99 percent of a test frequency sweep in KIC 3230227 sampling