The Arc in the DX Cha Circumbinary System: Evidence For a Retrograde Circumbinary Disk

Cheng Chen, Daniela Paz Iglesias, James M. Miley +1

Observations of the binary system DX Cha (HD 104237) reveal a compact, asymmetric ring structure with a radius of 0.43\,au. This ring is just outside the binary orbit, which has se…