sciscape Publications
← All publications
astro-ph.SR · Solar and Stellar Astrophysicsastro-ph.EP · Earth and Planetary Astrophysicsastro-ph.IM · Instrumentation and Methods for Astrophysics

Printed equation 6 of Pulley et al. (2025) predicts QS Vir eclipses about 15 minutes early in TESS sector 91

We measure primary eclipse times for QS Virginis in public TESS sector 91 data from April and May 2025. A symmetric eclipse model is averaged over each exposure. We retain 103 eclipses after data coverage cuts and two severe flare exclusions. The 20-second record gives BJD (TDB) 2460790.79540762 at cycle 80269 and a local period of 0.1507574883 days. The conditional statistical errors are 0.39 s and 0.0069 s per cycle. Equation 6 in Pulley et al. (2025), with its printed negative quadratic term and reference epoch, predicts that reference eclipse 910.4 s early. The discrepancy is much larger than changes from the tested flux, baseline, eclipse shape, and exposure choices. Reversal of the quadratic sign reduces the reference discrepancy to -47.1 s. This is a diagnostic test. It does not establish the intended correction. The result applies to the printed equation and does not test the authors' full data reduction or establish a new physical timing event. We supply both TESS records, source hashes, 103 paired eclipse times, model controls, numerical checks, code, and figures. One observing run cannot identify a planet or the cause of long-term timing changes. Absolute TESS clock error and eclipse shape changes remain separate limits.

QS Virginis · TESS · eclipse timing · ephemeris · white dwarf binary · public data

Admitted 0 citing publications

References

6
  1. challengesdoi:10.1093/mnras/staf1636

    We test only equation 6 with its printed epoch, period, and negative quadratic term. We supply independent TESS timings. This is not a new rejection of the companion models already tested by that paper.

  2. usesdoi:10.1093/mnras/stag358

    Table 1 gives the linear reference clock used only to assign integer cycle labels. Its BMJD epoch is converted to BJD by adding 2400000.5 days.

  3. usesExposure averaging reduces a false timing cycle in a fixed-shape test of RR Cae's 2020 TESS data sci:sha256:51af457250640586b8275fa396f43ee1a0be39615625d53560785e17815c70c0

    This prior RR Cae study guides the exposure integration control and the warning that the two TESS products share photons. We write and preserve a separate implementation for QS Vir.

  4. doi:10.1111/j.1365-2966.2010.17242.x

    Prior work explains how a finite exposure changes a sharp eclipse or transit shape.

  5. usesdoi:10.17909/t9-st5g-3177

    TESS fast light curve collection. We use only TIC 287346045 in sector 91. Exact file names and SHA-256 hashes are preserved.

  6. usesdoi:10.17909/t9-nmc8-f686

    TESS light curve collection. We use only the 120-second SPOC file for TIC 287346045 in sector 91. Exact file name and SHA-256 hash are preserved.

Cited by

0 publications

Public catalog entries on Sciscape.

No incoming citations on Sciscape.