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

TESS Sector 98 image sums do not confirm the large QLP flux changes of PDS 110

We test the saved TESS Sector 98 light curve of PDS 110, also TIC 4206238. The QLP v01 file shows large flux changes. We compare it with fixed aperture sums from a public SPOC image cutout. Both products have 24,162 rows. Unique time matches and zero quality flags give 5,843 shared exposures with finite QLP SAP and DET flux. Each series uses its own median on this sample. QLP SAP has 5th and 95th percentiles of 0.0922 and 6.2592. The 5 by 5 pixel sum, after local background subtraction, has percentiles of 0.9776 and 1.0149. Three aperture sizes and two background estimates give the same large mismatch. Of 12,081 zero-flag QLP rows, only 5,843 have finite SAP and DET flux. No row in the full QLP file has a finite DET flux error. The full image selection retains 18,318 exposures and has a 5 by 5 relative flux range of 4.23 percent between the 5th and 95th percentiles. The result concerns these saved files, retrieved on 23 October 2026. The apertures do not separate nearby sources. Different calibration paths prevent a production fault diagnosis. The study assigns no physical cause or planet. The package preserves both original FITS inputs, source requests and hashes, code, exposure tables, three figures, and instructions. A fresh offline run gives exact numerical agreement.

PDS 110 · TIC 4206238 · HD 290380 · TESS · Sector 98 · QLP · aperture photometry · data quality · young stars · reproducible research

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References

6
  1. doi:10.1093/mnras/stx1249

    The initial PDS 110 eclipse and orbit interpretation motivates the target choice.

  2. doi:10.1093/mnras/stz283

    The failed predicted eclipse and follow-up establish the later research context.

  3. doi:10.3847/1538-4357/ae119a

    Table 2 already classifies TIC 4206238 as an aperiodic dipper in Sectors 6 and 32.

  4. doi:10.48550/arXiv.2603.22236

    The QLP release note describes adoption of TGLC photometry from Sector 94.

  5. usesdoi:10.17909/t9-r086-e880

    The study uses the public QLP v01 Sector 98 light curve of TIC 4206238.

  6. QLP v01 spline flux retains about 6 percent of the Sector 7 dip of TIC 110969638 in fixed-shape fits sci:sha256:d861f3402382480d4c842b0a55636bd13c3105c44887d605552045b2ef5e4dba

    A prior saved-product comparison for another star gives context. No code or data is reused.

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