The Evolution in Coma Molecular Composition of Comet C/2017 K2 (PanSTARRS) across the H2O Sublimation Zone: ALMA Imaging of a H2O-dominated Coma

We report a survey of molecular emission from cometary volatiles using the Atacama Large Millimeter/submillimeter Array toward comet C/2017 K2 (PanSTARRS) carried out on UT 2022 September 21, 22, and 23 at a heliocentric distance ( r _H ) of 2.1 au. These measurements of HCN, CS, CO, CH _3 OH, and H...

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Autors principals:	Nathan X. Roth, Stefanie N. Milam, Martin A. Cordiner, Anthony J. Remijan, Dominique Bockelée-Morvan, Nicolas Biver, Jérémie Boissier, Steven B. Charnley, Charles E. Woodward, Lillian X. Hart, Timothy N. Proudkii
Format:	Artigo
Idioma:	Inglês
Publicat:	IOP Publishing 2026-01-01
Col·lecció:	The Planetary Science Journal
Matèries:	Molecular spectroscopy High resolution spectroscopy Radio astronomy Comae Radio interferometry Comets
Accés en línia:	https://doi.org/10.3847/PSJ/ae4d40
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