Rings around Quaoar

• A stellar occultation by the transneptunian object (50000) Quaoar observed by CHEOPS by Morgado et al., A&A, 664, L15 (2022)
• The recent paper announcing the rings is A dense ring of the trans-Neptunian object Quaoar outside its Roche limit , but it's hidden behind a paywall. One can see bits and pieces:
  • Title page and abstract
  • Fig 1: light curves showing the dips due to rings
  • Extended Table 3: list of observers
  • Extended Fig 3: time evolution of rings
  • Extended Fig 2: schematic of rings, planets, Roche limit
• John Broughton's account of his part in the discovery