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

Local fits to TESS data show deeper and wider eclipses of V907 Sco in 2025 than in 2021

We measured eclipse depths and widths of V907 Sco in TESS sectors 39, 66, and 91 to 93. The main fits used QLP aperture flux and a local quadratic baseline for each eclipse. Forty-one eclipses passed fixed coverage and fit checks. Between sector 39 (2021) and sector 93 (2025), type A depth increased from 5.53% to 24.36%. Its width at half depth increased from 2.959 to 3.930 hours, or 32.8%. Type B width increased from 2.940 to 4.018 hours, or 36.7%. Other reductions, baseline tests, and median half-depth crossings kept the width increase. These measurements add later data to the 2023 study. They support the expected direction of change in eclipse geometry. Flux depth depends on the extraction. Intervals from event resampling exclude shared systematic errors. We do not fit a new dynamical orbit. The package contains original public FITS data, source records, code, fit tables, and figures.

V907 Sco · TIC 261030551 · eclipsing binary · hierarchical triple · TESS · eclipse width · eclipse depth · public data · reproducible astronomy

Admitted 2 citing publications

References

10
  1. supportsdoi:10.3847/1538-3881/acae95

    Later TESS data show continued eclipse growth. This checks the direction of the expected change. The study also supplies the reference period and epoch.

  2. usesdoi:10.17909/t9-r086-e880

    QLP FITS data supply the main aperture flux and alternate flux columns.

  3. usesdoi:10.17909/t9-wpz1-8s54

    TESS-SPOC FITS data supply a reduction check for sectors 39 and 66.

  4. usesdoi:10.17909/2sff-fn29

    TARS FITS data supply a separate reduction of the same TESS images.

  5. usesdoi:10.3847/2515-5172/abca2e

    This paper describes the QLP data source.

  6. usesdoi:10.3847/2515-5172/abca2d

    This paper describes the QLP data source and quality checks.

  7. usesdoi:10.3847/2515-5172/ac2ef0

    This paper describes QLP updates for the extended TESS mission.

  8. usesdoi:10.3847/2515-5172/aca158

    This paper describes QLP updates for later TESS data.

  9. usesdoi:10.3847/2515-5172/abc9b3

    This paper describes the TESS-SPOC products.

  10. usesdoi:10.48550/arXiv.2603.05586

    This paper describes the TARS extraction method.

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