Fig. 1.
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ORVARA results for the main-sequence Ba star HD 2454. Top: astrometric and spectroscopic orbits. The RV plot includes radial-velocity measurements from CORAVEL (orange circles), SOPHIE (pink diamonds), and HERMES (green triangles). Bottom: HIPPARCOS and Gaia proper motions. In all plots, the best-fitting orbit is plotted as a black thick line, while 40 other well-fitting orbits are included and colour-coded as a function of the companion mass.
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