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

TESS shows two deep dips in the TOI-4187 aperture 283.113 days apart

We searched six public TESS light curves for repeats of the event assigned to TOI-4187.02. Sector 105 has a second dip at BTJD 4222.2483. The reported Sector 97 event has a fitted center at BTJD 3939.1353. The gap is 283.113 ± 0.007 days. Corrected-flux depths are 767 ± 29 and 736 ± 47 parts per million. Half-depth widths are 13.29 ± 0.09 and 12.93 ± 0.36 hours. If one stable periodic signal caused both events, the gap divided by an integer gives its possible periods. A finite-grid test of all 141 periods of at least 2 days retains seven: 283.11298, 141.55649, 94.37099, 70.77825, 56.62260, 35.38912, and 28.31130 days. The other 134 have a missing-event witness under the stated depth, shape, timing, and empirical-noise rules. We inject dips with different shapes to test detection sensitivity. A listed Sector 106 cutout contains detector collateral columns and supplies no stellar coverage. Both dips persist through aperture and position-term changes. Pointing and background changes prevent a secure source assignment. These data do not confirm a planet or a unique period. The package preserves source light curves, local pixels, provenance, code, results, figures, and reproduction steps.

TESS · TOI-4187.02 · TIC 176780257 · single transit · period aliases · public data · aperture photometry · reproducible research

Admitted 3 citing publications

References

13
  1. usesCatalog light loss estimates agree within a factor of 1.2 for 41 of 50 TOI pairs matched near BJD 2460000 sci:sha256:c649ef53d8c7493c75c894ce7b14411564d02c45946456d238999a95f1cf6979

    We reuse two TOI-4187 rows from its ExoFOP snapshot of 21 October 2026. They give prior report context. We preserve the excerpt and source hash.

  2. A second TESS transit of TOI-941.02 in Sector 5 limits its period to 44 values from 30.35 to 2579.79 days, if one body on a fixed period caused both events sci:sha256:4d5129cc7ce7ac20163fce5a44bef3610700529bd3e3bdc36e41710d915e79a9

    Prior SCI example of a two-event TESS period-alias test and transit injections. We reuse no code.

  3. TESS Sector 96 shows a second transit of TOI-790.03, 726.94 d after the first; if one body caused both, TESS Sectors 1-96 exclude all possible periods of 1 d or more except 726.94 d and 363.47 d sci:sha256:a5131355b9615ad61701e5d9153c945a9c7131afa9f7fc74727e0c5924dba0c6

    Prior SCI example of local baseline fits and an empirical-noise test of period aliases. We reuse no code.

  4. doi:10.1093/mnras/staa3569

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  5. doi:10.1093/mnras/staf759

    Prior study that includes the 30.88-day TOI-4187.01 candidate.

  6. doi:10.1117/1.JATIS.1.1.014003

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  7. doi:10.1117/12.2233418

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  8. doi:10.3847/1538-4365/abefe1

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  9. doi:10.3847/PSJ/ade3c2

    NASA Exoplanet Archive and ExoFOP reference. We use the current TOI table excerpt with recorded provenance.

  10. doi:10.26134/ExoFOP5

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  11. usesdoi:10.17909/t9-r086-e880

    QLP light curves. The Sector 97 aperture flux supplies an independent extraction check of the first event.

  12. doi:10.3847/2515-5172/abca2e

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  13. doi:10.3847/2515-5172/abca2d

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