Image Details
Caption: Figure 5.
The mass of the visible star (M2) vs. that of the unseen companions (M1). The red, blue, and green dashed–dotted lines indicate M1 = M2, M1 = 2/3M2, and M1 = 1/2M2, respectively. The confirmed compact object system J2354 is marked with an orange star, while other targets are shown as black circles with errors.
© 2026. The Author(s). Published by the American Astronomical Society.