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astro-ph.EP2025
First Detection of Molecular Activity in the Largest Known Oort Cloud Comet: ALMA Imaging of C/2014 UN271 (Bernardinelli-Bernstein) at 16.6 au from the Sun
Nathan X. Roth, Stefanie N. Milam, Martin A. Cordiner +12
We report observations of comet C/2014 UN271 (Bernardinelli-Bernstein) carried out on UT 2024 March 8 and 17 at a heliocentric distance () of 16.6 au using the Atac…
astro-ph.EP2024
Analysing the Onset of Cometary Activity by the Jupiter-Family Comet 2023 RN3
Matthew M. Dobson, Megan E. Schwamb, Alan Fitzsimmons +17
We utilize serendipitous observations from the Asteroid Terrestrial-impact Last Alert System (ATLAS) and the Zwicky Transient Facility (ZTF) in addition to targeted follow-up obser…
astro-ph.EP2024
The Discovery and Evolution of a Possible New Epoch of Cometary Activity by the Centaur (2060) Chiron
Matthew M. Dobson, Megan E. Schwamb, Alan Fitzsimmons +24
Centaurs are small Solar System objects on chaotic orbits in the giant planet region, forming an evolutionary continuum with the Kuiper belt objects and Jupiter-family comets. Some…