Image Details
Caption: Figure 6.
Evolution of χ2 with assumed period P for xallarap models of KMT-2023-BLG-0164 that allow for free fits to the orientation parameters (α, δ). The xallarap period P = 1 yr is the best fit, as one would expect if the actual origin of the light-curve distortion is the parallax effect induced by Earth’s annual orbital motion.
© 2026. The Author(s). Published by the American Astronomical Society.