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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…
Phosphine in the Venusian Atmosphere: A Strict Upper Limit from SOFIA GREAT Observations
M. A. Cordiner, G. L. Villanueva, H. Wiesemeyer +13
The presence of phosphine (PH) in the atmosphere of Venus was reported by Greaves et al. (2021a), based on observations of the J=1-0 transition at 267 GHz using ground-based, m…
A SUBLIME 3D Model for Cometary Coma Emission: the Hypervolatile-Rich Comet C/2016 R2 (PanSTARRS)
M. A. Cordiner, I. M. Coulson, E. Garcia-Berrios +12
The coma of comet C/2016 R2 (PanSTARRS) is one of the most chemically peculiar ever observed, in particular due to its extremely high CO/H2O and N2+/H2O ratios}, and unusual trace…
Leveraging the ALMA Atacama Compact Array for Cometary Science: An Interferometric Survey of Comet C/2015 ER61 (PanSTARRS) and Evidence for a Distributed Source of Carbon Monosulfide
Nathan X. Roth, Stefanie N. Milam, Martin A. Cordiner +6
We report the first survey of molecular emission from cometary volatiles using standalone Atacama Compact Array (ACA) observations of the Atacama Large Millimeter/Submillimeter Arr…