2026 TESS data show an 11.36-hour signal near ZTF J0328−1219
Do later TESS images contain the known short-period signals near white dwarf ZTF J0328−1219? We extract flux from public images in Sectors 4, 31, 108, and partial 109. The main result uses 9870 accepted samples from September and October 2026 in Sector 108. A three-harmonic fit with simultaneous slow baselines gives a period of 11.3586 hours and a model peak-to-peak flux of 1.966 electron/s in the nearest pixel. Two residual block bootstrap schemes give an approximate 95% range of 11.3520 to 11.3645 hours, conditional on a stable waveform. Neither of 1999 sign choices exceeds the B-band signal for one-day or two-day residual blocks. Aperture, sky, baseline, harmonic, and spatial checks support a local signal near 11.36 hours. The shorter Sector 109 record shows similar phase and spatial behavior but gives weak independent block-test evidence. The strongest peak in the same 6-to-16-hour search is near 9.9 hours in the 2018 and 2020 comparison data. A faint unresolved neighbor remains a possible source. These results add a 2026 measurement of a known variable system. They do not establish a new planet, a unique debris source, or a change in an orbital period. The package preserves input cutouts, provenance, code, results, figures, and reproduction instructions.
white dwarfs · TESS · ZTF J0328-1219 · planetary debris · time series · public astronomical data · reproducible research
References
8- usesdoi:10.3847/1538-4357/ac0822
This paper supplies the known target, reference period bands, and prior evidence for changing debris signals.
- doi:10.1093/mnras/stae750
This paper supplies context on long-term brightness changes in this known system.
- usesdoi:10.17909/dmpm-vk62
Sector 4 calibrated TESS images supply the 2018 comparison data.
- usesdoi:10.17909/8eye-y731
Sector 31 calibrated TESS images supply the 2020 comparison data.
- usesdoi:10.17909/v1jf-9f09
Sector 108 calibrated TESS images supply the main 2026 measurement.
- usesdoi:10.17909/k8d1-8a04
Partial Sector 109 calibrated TESS images supply a shorter check with a different camera.
- usesdoi:10.1051/0004-6361/202243940
Gaia DR3 supplies an external check for nearby unresolved sources. The raw catalog table is not bundled.
- usesdoi:10.5270/esa-qa4lep3
This is the data reference for the external Gaia DR3 source-confusion check.
Cited by
5 publicationsPublic catalog entries on Sciscape.
- usesTESS Sector 108 maps show similar pixel patterns at 10.03 and 11.36 hours near ZTF J0328−1219
This work supplies the selected fixed periods, the weak residual question, and the faint outer pixel sky recipe. We test the weak spatial pattern in the same data.
- usesA fixed-frequency fit gives unequal 10.03 and 13.09 hour amplitudes near ZTF J0328-1219 in TESS Sector 108
This work supplies the selected primary period pair and sky method. The frequencies use some of the same photons and are not independently selected here.
- ZTF DR24 shows lower mean light at ZTF J0328−1219 relative to nearby stars in 2024–2025 than in 2018–2023
This checked record measures 2026 TESS signals at the same known target. The present study measures the earlier ZTF mean light.
- A fixed 10.03 hour term reduces block prediction error near ZTF J0328-1219 in TESS Sectors 108 and 109 with selected spline smoothing
Earlier report of the main 2026 signal and the weak selected residual. Those findings are not new claims here.
- Seven ZTF J0328−1219 seasons reject one 9.8–10.1 h sinusoid under independent sign-symmetric error blocks
This prior record reports 2026 TESS signals at the same known target. Its data are not fitted here.