Two reported planet periods improve a circular velocity model for 27 ESPRESSO nights of HD 45184

We test the two reported planet periods of HD 45184 with public ESPRESSO data from 2023 to 2025. We combine 54 exposures into 27 night means. We fix the periods at 5.8854 and 13.1354 days and fit circular signals with a separate offset for each of four pipeline versions. The fitted velocity semi-amplitudes are 3.49 ± 0.52 and 2.52 ± 0.57 m/s. The residual root mean square falls from 3.08 m/s with offsets alone to 1.54 m/s with both signals. Conditional tests for removal of each signal give F(2,19) values of 22.45 and 9.93 under independent Gaussian noise. Both signals remain in the tested line indicator, rotation, telescope, and correlated-noise models. A scan from 2 to 50 days gives a stronger second-period peak near 14.26 days than near 13.14 days. In 2000 simulations at the actual dates, with the fitted signals and independent 1.84 m/s Gaussian noise, that scan selects a frequency within one inverse data span of the reported second period in 47.15% of trials. These data add support at the reported periods but do not select both periods on their own. The package preserves the public CCF inputs, source records, code, tables, figures, and reproduction instructions.

HD 45184 · ESPRESSO · radial velocity · planet signal test · stellar activity · period ambiguity · public astronomical data