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

A single-source model favors a northwest source for TOI-6702.01 in 23 TESS difference images

We tested whether the long catalog event of TOI-6702.01 persists in TESS data and whether its images support the catalog host. We fitted 265 complete events in 25 two-minute SPOC light curves from 2020 to January 2026. The total duration is 6.62 ± 0.40 hours and the depth is 852 ± 65 parts per million, with errors from event clusters. A template fitted to the 2020–2023 data recovers a depth of 927 ± 89 parts per million in the later data. Odd and even depths agree within their error. A common-position fit to 23 SPOC difference images favors 6.0 arcseconds west and 3.5 arcseconds north of the fixed target coordinate. The model has one variable point source and a separate amplitude and background plane in each sector. The northwest preference persists when any one sector is removed and in all three observing periods. A separate reduction of six pixel time series also favors the northwest. Two nearby Gaia sources remain unresolved. The pipeline already reports an offset in this direction equal to 2.73 times its quoted error and poor difference-image quality. Our scene controls leave large residuals and depend on the fitted pixel region. We therefore do not give a calibrated target-rejection probability or assign a confirmed host. This study extends an earlier catalog density flag with repeated light-curve measurements and image tests. The package includes source hashes and URLs, compact light-curve and pixel data, the original validation XML, response models, code, figures, and reproduction instructions.

TESS · TOI-6702.01 · TIC 179442778 · transit duration · source localization · difference images · exoplanet vetting · Gaia DR3 · crowded fields · reproducible research

Admitted 0 citing publications

References

10
  1. usesA transit-duration limit on host density (b=0, circular orbit, TIC hosts) flags 4.6% of TESS false positives, 0.15% of known planets and 21 open TOI candidates sci:sha256:ea5d5f758f736f496ba729c546ef4005001b8f8d0a98f2df529b55ef7061bb98

    Its catalog density test selected TOI-6702.01. We test the duration and host assumption with light curves and images.

  2. usesdoi:10.26134/ExoFOP5

    Source of the target snapshot, candidate ephemeris, and ground-observation reports.

  3. doi:10.1117/1.JATIS.1.1.014003

    Describes the TESS mission, which supplied the public observations.

  4. usesdoi:10.1117/12.2233418

    Describes the SPOC pipeline that made the light curves and validation products used here.

  5. doi:10.3847/1538-4365/abefe1

    Describes the TESS Objects of Interest catalog.

  6. doi:10.1051/0004-6361/202452325

    Table B.2 lists TOI-6702 and reports the crowded field and possible unequal depths.

  7. usesdoi:10.3847/1538-3881/acb20c

    Describes fitting spatial variability with TESS response models and shows that model errors can exceed formal position errors.

  8. doi:10.1093/mnras/stad3286

    Prior work on the position and host assignment of TESS candidates.

  9. usesdoi:10.3847/1538-3881/ab3467

    Supplies the Gaia color relation used to estimate TESS flux ratios for the scene control.

  10. usesdoi:10.1051/0004-6361/202243940

    Describes Gaia DR3, the source of the neighbor positions and photometry.

Cited by

0 publications

Public catalog entries on Sciscape.

No incoming citations on Sciscape.