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Dense Molecular Clouds in the Crab Supernova Remnant
Alwyn Wootten, Rory O. Bentley, J. Baldwin +7
Molecular emission was imaged with ALMA from numerous components near and within bright H2-emitting knots and absorbing dust globules in the Crab Nebula. These observations provide…
Discovery of the Pure Polycyclic Aromatic Hydrocarbon Indene (-CH) with GOTHAM Observations of TMC-1
Andrew M. Burkhardt, Kin Long Kelvin Lee, P. Bryan Changala +8
Polycyclic Aromatic Hydrocarbons (PAHs) have long been invoked in the study of interstellar and protostellar sources, but the unambiguous identification of any individual PAH has p…
Detection of Interstellar HCCCHCN
C. N. Shingledecker, K. L. K. Lee, J. T. Wandishin +8
The chemical pathways linking the small organic molecules commonly observed in molecular clouds to the large, complex, polycyclic species long-suspected to be carriers of the ubiqu…
Detection of Two Interstellar Polycyclic Aromatic Hydrocarbons via Spectral Matched Filtering
Brett A. McGuire, Ryan A. Loomis, Andrew M. Burkhardt +12
Ubiquitous unidentified infrared emission bands are seen in many astronomical sources. Although these bands are widely, if not unanimously, attributed to the collective emission fr…
Discovery of Interstellar trans-cyanovinylacetylene (HCCCH=CHCN) and vinylcyanoacetylene (HC=CHCN) in GOTHAM Observations of TMC-1
Kin Long Kelvin Lee, Ryan A. Loomis, Andrew M. Burkhardt +8
We report the discovery of two unsaturated organic species, trans-(E)-cyanovinylacetylene and vinylcyanoacetylene, using the second data release of the GOTHAM deep survey towards T…
A New Method for Simulating Photoprocesses in Astrochemical Models
Ella Mullikin, Hannah Anderson, Natalie O'Hern +8
We propose a new model for treating solid-phase photoprocesses in interstellar ice analogues. In this approach, photoionization and photoexcitation are included in more detail, and…