Extra aperture samples increase coverage for at least two central model transits at Barnard e's period in 120-second TESS Sector 80 data

We tested how missing samples and flux correction affect transit recovery in the public 120-second TESS Sector 80 light curve of Barnard's Star. We compared full aperture flux, aperture flux at corrected-flux times, and corrected flux. The full aperture series retains 4,691 extra samples. We ran 221,184 injection trials across four measured periods, four paths, nine radii, 512 paired phases, and three data selections. At the 6.7392-day period, 4,656 of 4,853 tested central-transit epochs have at least two usable events in full aperture data. Only 4,190 pass at the common times. Thus, extra samples raise tested phase coverage from 86.34% to 95.94%. This result uses the duration of a fixed 0.60 Earth-radius template and stated event coverage tests. Every tested epoch at the other three periods passes the coverage rule. Corrected flux has 16.1% lower measured point noise. Recovery also depends on the signal radius, path, baseline fit, and selected threshold. No observed trial reaches its data selection's screening threshold. The earlier literature already reported no transit evidence in this sector. The contribution is the paired recovery data and the separation of sample coverage from measured flux effects. These fractions count tested models; they are not planet transit probabilities. Injections occur after archived pipeline processing, so the tests do not measure transit loss during that processing. The package includes the unchanged source file, provenance, code, all search and injection scores, numerical checks, controls, and figures.

Barnard's Star · TESS · transit recovery · public data · sample coverage · TIC 325554331 · Sector 80