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Revised Mass and Orbit of ε Eridani b: A 1 MJup Planet on a Near-circular Orbit

  • Authors: William Thompson, Eric L. Nielsen, Jean-Baptiste Ruffio, Sarah Blunt, Christian Marois

William Thompson et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 1.

Comparison of the orbit posteriors incorporating different sources of data. The blue dots mark the location of the planet on 2025 January 1. The colors of the orbit draws match those in Figure 2 for easier cross-referencing. The bottom-right panel shows the outer debris disk model fit to ALMA data by M. Booth et al. (2023). The red symbol indicates two models containing only RV data and only absolute astrometry data, respectively, and whose posteriors are therefore completely independent. The models indicated by the blue symbol include RV data, but distinct sets of astrometric data, making the position angles they indicate on 2025 January 1 effectively independent.

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