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Clues to PPN Chemical Evolution: The Unique Molecular Environment of V510 Pup
Mark A. Siebert, Anthony J. Remijan
V510 Pup (IRAS 08005-2356) is a binary post-AGB system with a fast molecular outflow that has been noted for its puzzling mixture of carbon- and oxygen-rich features in the optical…
Explaining the Chemical Inventory of Orion KL through Machine Learning
Haley N. Scolati, Anthony J. Remijan, Eric Herbst +2
The interplay of the chemistry and physics that exists within astrochemically relevant sources can only be fully appreciated if we can gain a holistic understanding of their chemic…
Low NH/HO ratio in comet C/2020 F3 (NEOWISE) at 0.7 au from the Sun
Maria N. Drozdovskaya, Dominique Bockelée-Morvan, Jacques Crovisier +7
A lower-than-solar elemental nitrogen content has been demonstrated for several comets, including 1P/Halley and 67P/C-G with independent in situ measurements of volatile and refrac…
Gas Sources from the Coma and Nucleus of Comet 46P/Wirtanen Observed Using ALMA
M. A. Cordiner, N. X. Roth, S. N. Milam +10
Gas-phase molecules in cometary atmospheres (comae) originate primarily from (1) outgassing by the nucleus, (2) sublimation of icy grains in the near-nucleus coma, and (3) coma (ph…
ALMA Observations of the DART Impact: Characterizing the Ejecta at Sub-Millimeter Wavelengths
Nathan X. Roth, Stefanie N. Milam, Anthony J. Remijan +12
We report observations of the Didymos-Dimorphos binary asteroid system using the Atacama Large Millimeter/Submillimeter Array (ALMA) and the Atacama Compact Array (ACA) in support…
Molecular Outgassing in Centaur 29P/Schwassmann-Wachmann 1 During Its Exceptional 2021 Outburst: Coordinated Multi-Wavelength Observations Using nFLASH at APEX and iSHELL at the NASA-IRTF
Nathan X. Roth, Stefanie N. Milam, Michael A. DiSanti +13
The extraordinary 2021 September-October outburst of Centaur 29P/Schwassmann-Wachmann 1 afforded an opportunity to test the composition of primitive Kuiper disk material at high se…