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New Orbital Constraints for YSES 1 b and HR 2562 B from High-Precision Astrometry and Planetary Radial Velocities

  • Authors: Jonathan Roberts, William Thompson, Jason J. Wang, Sarah Blunt, William O. Balmer, Guillaume Bourdarot, Brendan P. Bowler, Gael Chauvin, Frank Eisenhauer, Thomas K. Henning, Jens Kammerer, Flavien Kiefer, Matthew A. Kenworthy, Pierre Kervella, Sylvestre Lacour, A.-M. Lagrange, Eric L. Nielsen, Laurent Pueyo, Emily Rickman, Olli Sipilä, Silvia Spezzano, Tomas Stolker, Alice Zurlo

Jonathan Roberts et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 1.

Orbit fit for HR 2562 B. The leftmost plot displays 100 randomly selected orbits, color-coded to illustrate the anticipated orbital position over time. The right panels present the measured separation and position angle as a function of time, compared to the randomly drawn orbits (in gray). Red stars represent the observations. The apparent position angle discrepancy observed between 2018 and 2020 is likely due to systematic effects inherent to GPI astrometry.

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