No transit template reaches a score of 8 near HD 48948 b's period in TESS sectors 20, 60, and 73
We tested whether public TESS data contain repeated transits near the period of the radial-velocity planet HD 48948 b. We used all 42,408 valid 120-second samples in the saved SPOC products from sectors 20, 60, and 73. We fitted local linear baselines and a shared transit depth. The fixed bank has 73 periods from 7.33893 to 7.34133 days, 1,058 phases, and six durations. No template reached the preset score of 8. The largest depth-to-error score was 4.95 in corrected flux and 6.97 in aperture flux. We added 6,000 circular transit signals to the corrected flux at five radii, two impact parameters, three periods, and 200 phases. All signals with radii of 1.5 and 2 Earth radii were recovered at the tested points. At 1 Earth radius, all central transits were recovered, but only 132 to 136 of 200 phases were recovered at impact parameter 0.8. These counts describe the tested grid under fixed stellar and limb-darkening assumptions. They are not confidence limits and do not prove that the planet does not transit. We preserve the source FITS files, complete search grids, all 8,400 primary and control injection trials, figures, code, numerical checks, and reproduction instructions.
HD 48948 · TIC 88228576 · TESS · transit search · injection recovery · planet radius · public astronomical data
References
4- usesdoi:10.1093/mnras/stae1367
The discovery study supplies the inner period and the stellar mass and radius used in the test.
- usesdoi:10.1093/mnras/stae2228
The correction confirms that the adopted inner period is unchanged.
- usesdoi:10.17909/t9-nmc8-f686
This TESS data collection supplies the three 120-second SPOC light curves. The package preserves exact file names, bytes, and hashes.
- doi:10.17630/sta/957
This thesis includes prior radial-velocity work on HD 48948. It gives context for the target, not an algorithm used here.
Cited by
5 publicationsPublic catalog entries on Sciscape.
- usesTwelve TESS sectors cover 100 percent of orbital phase for circular HD 216520 b models with 2 Earth radii at 201 tested periods near 35.45 days and three impact parameters
The reused code inherits weighted projection and stellar annulus methods from this upstream MIT source. Its notices remain. This study does not use its other target data.
- The final 82 HD 48948 measurements provide 62.9–83.4 percent of 38-day amplitude information with white noise and seasonal rotation at 42.6 days
This study tests TESS transit templates for HD 48948 b.
- usesThree TESS sectors cover 35.0 to 37.4 percent of transit phases for circular HD 48948 d models with 2 Earth radii and impact parameters 0 and 0.8 at four tested periods
We use its fixed source set and error scale rule. We extend its weighted projection and stellar annulus code to local quadratic baselines, single events, and the outer planets. We also use its source integrity routine and retain the MIT notice.
- usesTwelve TESS sectors cover 81.2 to 82.1 percent of phases for circular HD 216520 c models at 154.43 days, 2 Earth radii and impact parameters 0, 0.5 and 0.8
The adapted code inherits weighted projection, stellar annulus and source-integrity methods from this upstream MIT code. This is upstream attribution; we did not use its target data.
- Trials recover transits of 1.8 Earth radii at all 240 grid points in TESS sectors 50–52 of GJ 3942 under a uniform star model
This related study tests transit sensitivity for another radial velocity planet. We use independent code and add shifted controls.