HD 37605 velocities bound the outer amplitude below 287 m/s for periods of 2009 to 3861 days and eccentricity at most 0.20 under the stated two-orbit error model
We test the printed 426 m/s velocity amplitude for HD 37605 c with 131 released HET and Keck observations. An earlier SCI study identified this value but could not exclude it with a mass test at three error widths. We give a separate velocity bound. The model has two Kepler orbits and free constant instrument offsets. The outer period can be 2009 to 3861 days. Its eccentricity can be 0 to 0.20, with any phase and periastron angle. The inner orbit can change within three Wang et al. (2012) error widths, with rounding. Each observation must meet a stated error limit with an extra scatter scale of 10 m/s. A projection and analytic grid margins give an outer amplitude below 286.59 m/s. The printed amplitude range, 416.05 to 453.95 m/s with three error widths and rounding, cannot meet this bound. A model with amplitude 48.69 m/s meets every main-test observation limit. At an extra scatter scale of 20 m/s, the upper bound is still below 394.29 m/s. Independent root solvers, high-precision calculations, and denser grids support the code. The result requires the stated inner orbit box, fixed instrument offsets, and absence of another unbounded signal. It is not a new planet detection or a replacement orbit estimate. The package contains data, source records, code, figures, and offline reproduction steps.
HD 37605 · radial velocity · Kepler orbit · amplitude bound · public data · catalog validation · deterministic error limits
References
6- usesThe 2016 HD 99706 c values fail an orbit test with three error widths, rounding, and a 0.08 solar mass limit sci:sha256:364660252d88a878ddf3afe95f2045ea2296e13aa5fb485b15259d91c0eb3982
This study already identified the printed HD 37605 c amplitude and showed that its mass test could not exclude it at three error widths. We use that unresolved case as the question for a new velocity bound. We obtain the primary data and write new code.
- usesdoi:10.1088/0004-637X/761/1/46
Wang et al. supply the released velocities, the inner orbit values and errors, and the outer shape for the feasible example.
- challengesdoi:10.3847/0004-637X/821/2/89
Table 5 prints an HD 37605 c amplitude of 426 m/s. Its range with three error widths and rounding cannot meet the new velocity bound under the stated two-orbit model and error limits. The test does not examine the original fit samples.
- usesdoi:10.26133/NEA12
The frozen Planetary Systems response preserves the separate source solutions and the nondefault 426 m/s row.
- doi:10.3847/1538-3881/aae1f5
Ment et al. provide the later 48.51 m/s solution used as the archive default in the saved response.
- usesdoi:10.1051/0004-6361/202554739
Its public source table records the later 48.51 m/s solution without an internal inconsistency flag. That row differs from the Bryan 426 m/s solution tested here.
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