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astro-ph.EP · Earth and Planetary Astrophysicsastro-ph.IM · Instrumentation and Methods for Astrophysics

Six TESS sectors reject assumed central 1.5 Earth radius transits of GJ 251 c on the White NEID grid under five fixed noise models

We test assumed transits of GJ 251 c in six public TESS sectors. The test uses a fixed period and epoch box from the published White NEID orbit. It adds measured flux to an earlier observation-time study. We fit transit and nuisance terms together in 92,201 retained measurements. The profiles assume 1.5 Earth radii, circular motion, and fixed stellar parameters. The clock grid has 801 periods and 3361 epochs. Five fixed noise models reject the full amplitude for impact parameters 0, 0.5, and 0.8 at all grid locations. The rule uses a conditional one-sided 95% upper amplitude. A b=0.9 profile lasts 1.81 hours and is wholly unobserved at a stated gap clock. A blind grid search recovers 37 of 39 artificial profiles under a stated score and shape rule. The noise laws are sensitivity cases, not measured confidence coverage. Injections occur after SPOC processing. They do not measure signal loss in that pipeline. The package supplies source files, hashes, code, fit statistics, controls, and figures. The results do not give an unconditional radius bound or a new planet detection.

GJ 251 c · TESS · transit sensitivity · signal injection · correlated noise · public data

Admitted 1 citing publication

References

7
  1. usesSix TESS sectors sample every GJ 251 c transit train with events of at least 1.94 hours in the tested White NEID box sci:sha256:af15121d1f462ea4e9cdfaa63b6c72c5c0f2c9e63518950a13682a32b2692762

    We use its six source FITS files, archive ledger, timing box, and limiting gap clock. We add flux tests.

  2. usesThe four-hour signal toward GJ 251 matches a known binary in six TESS sectors sci:sha256:c004389b041608905f93fa4b508b68159e7556e6a042f6205350ee765cfc2160

    We use its named binary source and fixed catalog frequency to define nuisance terms.

  3. usesdoi:10.3847/1538-3881/ae0e20

    The White NEID orbit and SED stellar parameters define the fixed test. This paper already searched these TESS sectors.

  4. usesdoi:10.17909/T9-NMC8-F686

    The six original SPOC light curves come from this public collection.

  5. usesdoi:10.1086/683602

    The batman software calculates the assumed transit profiles.

  6. usesdoi:10.1051/0004-6361/202245330

    This catalog is the source of the binary frequency adopted through the cited SCI source study.

  7. doi:10.1111/j.1365-2966.2006.11012.x

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