The small QLP aperture has lower residual scatter in eight TESS sectors of KIC 8164262
We test eight public QLP light curves of KIC 8164262 from 2019 to 2024. The sample has 52,516 retained exposures. The small aperture has a radius of 1.75 pixels. The default radius is 2.5 pixels. After the same sample selection and signal fit, the default to small residual RMS ratio is 1.76 to 2.60. Its median is 2.00. A robust scatter measure gives the same direction in all eight sectors. We chose this secondary aperture study after input inspection. We also fit the known mode at 2.6184922 cycles per day. A common vector fit to four 2024 sectors gives a small-aperture amplitude of 600 plus or minus 43 parts per million. This is one standard error from 0.5-day noise blocks. Tests of constant sine and cosine coefficients give p = 0.841 for the default aperture and p = 0.279 for the small aperture. Two small-aperture controls give p near 0.03. These approximate tests do not establish a physical change in the star. They also do not prove constant intrinsic mode properties. The package contains the eight original light curves, source queries, file hashes, code, all tested controls, figures, and a complete rerun command. The result supports use of the small QLP aperture for further study of this known oscillation. It does not establish its absolute signal calibration.
TESS · KIC 8164262 · TIC 159649612 · heartbeat binary · tidal oscillation · QLP · aperture photometry · public light curves · reproducible analysis
References
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We use the published dominant mode frequency and orbital ephemeris. The ephemeris sets the pulse mask.
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The resonance locking model motivates later measurements of this known oscillation.
- usesdoi:10.17909/t9-r086-e880
The analysis uses eight QLP light curves from this archive. The package preserves their versions, URLs, and hashes.
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This paper describes the QLP products and their flux correction.
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This paper describes the extended mission QLP products used for pipeline context.
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We use TESS Input Catalog records to identify the target and nearby stars.
- TESS fits with 31 modes show a phase departure from the 91:90 relation in KOI-54 near the Kepler frequencies from 2019 to 2024 sci:sha256:8cbab18a4bce147f389f93d7c621831c99ae54be05cc9245fb3dfb63d4c603a2
This related study measures TESS harmonic phases in another heartbeat binary. We use none of its code or measurements.
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesA free source model has lower minima near the bright neighbor of KIC 8164262 in TESS sectors 40 and 81
We use its target and sector context and preserve its exact TIC cone response as the main catalog.
- usesPixel noise assumptions change the preferred source fit in eight TESS sectors of KIC 8164262
We reuse its complete local TESS Input Catalog snapshot. Its aperture comparison motivates a separate pixel source test.
- usesEight TESS sectors do not reject the Kepler frequency of KIC 8164262 with 0.5 day noise blocks
This study supplies the small-aperture choice and the identities of eight QLP products. We fetch the files again and verify their hashes. We add an independent Kepler frequency and a later TESS frequency test. No code is copied.