TESS sectors 21 and 48 recover added circular 3-Earth-radius HD 86728 b transits at all 256 tested phases for impact parameters 0, 0.5, and 0.8
We searched public TESS data for transits of the radial-velocity planet HD 86728 b. The two-minute data from sectors 21 and 48 contain 32,798 samples after quality cuts. A search across all phases and 81 periods from 31.1305 to 31.1701 days gives a maximum score of 3.45. The fixed detection threshold is 8. We added 6,144 circular transit signals to the delivered light curves before local trend removal. We tested a known period of 31.1503 days. For a radius of 3 Earth radii, all 256 phases are recovered at impact parameters 0, 0.5, and 0.8. At impact parameter 0.95, the search recovers 177 of 256 phases. For central transits with 2 Earth radii, it recovers 194 of 256 phases. We also provide 8,704 injections that test period, trend removal, and limb darkening. The fractions describe a finite phase grid with fixed stellar and orbit models. They do not give a posterior transit probability or an unconditional planet radius bound. Injection after TESS pipeline processing cannot test signal loss in that pipeline. The package includes the exact public input files, source code, figures, and recovery results.
HD 86728 b · TESS · transit search · injection recovery · radial velocity planets · public astronomical data
References
5- usesdoi:10.3847/1538-3881/ad89bf
We use the adopted planet period and stellar mass and radius from Gupta et al. The paper also identifies the TESS sectors used here.
- usesdoi:10.17909/t9-nmc8-f686
We use the public TESS two-minute SPOC light curves for TIC 172954294 in sectors 21 and 48. The package records exact product names and hashes.
- usesdoi:10.1051/0004-6361:20020802
We use box least squares to search for periodic decreases in flux.
- usesdoi:10.1086/683602
We use batman to generate transit signals with limb darkening and finite exposure times.
- usesdoi:10.3847/1538-4357/ac7c74
We use Astropy to read FITS data and run box least squares.
Cited by
4 publicationsPublic catalog entries on Sciscape.
- supportsTESS sectors 1-107 show no new transit of 659 RV planets in their RV-predicted windows; the same search finds 24 of 28 known transiting RV planets; the HD 44219 eclipses come from a neighbour star
Our uniform TESS search finds no transit of HD 86728 b in its RV-predicted windows (S = 3.81, P_det = 0.57).
- usesFive TESS visits leave 5.41% of phases unobserved for a circular central GJ 357 d model at 55.661 days and 1.5 Earth radii
We adapt the local linear filter, noise scaling, search, and signal injection code. We keep its MIT notice.
- Added 1 m/s yearly signals have 44.5% to 99.6% recovery across 32 phases in HD 86728 simulations with independent Gaussian noise
Related public-data signal recovery study of HD 86728 using TESS transit data. We do not reuse its data or code.
- An earlier 31-day curve predicts later HD 86728 velocities in two time tests with Gaussian noise
Related public-data transit sensitivity study for the same star. We use no data or code from it.