Overview
- ARKS delivers the sharpest millimetre images yet of 24 debris disks and releases the full dataset, filling a key observational gap between planet-forming and mature systems.
- Roughly one-third of the sample hosts multiple rings, while ten systems show significant asymmetries or offsets that signal active dynamical processes.
- Six disks contain detectable CO, with constrained gas distributions and kinematics, including non‑Keplerian motion in at least one case consistent with pressure‑driven effects.
- Detailed studies of HD 121617 reveal a narrow dust arc and strong azimuthal velocity departures; models allow gas‑driven dust trapping with substantial gas masses, though a planet‑driven origin remains possible.
- Radial and vertical analyses find narrow rings, steep inner edges at smaller radii suggestive of planet sculpting, broad belts consistent with collisional evolution, and a preference for non‑Gaussian vertical profiles.