Post-perihelion optical spectroscopy of 3I/ATLAS reveals less C2 depletion than pre-perihelion, perihelion asymmetry in CN and metal production, metal release tied to CO rather than H2O, and residual [O I] emission indicating additional oxygen parents.
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Post-perihelion Coma Composition of the Interstellar Comet 3I/ATLAS from Optical Spectroscopy
Post-perihelion optical spectroscopy of 3I/ATLAS reveals less C2 depletion than pre-perihelion, perihelion asymmetry in CN and metal production, metal release tied to CO rather than H2O, and residual [O I] emission indicating additional oxygen parents.