Search Results - "Cooke, Ilsa R."
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Detection of two interstellar polycyclic aromatic hydrocarbons via spectral matched filtering
Published in Science (American Association for the Advancement of Science) (19-03-2021)“…Unidentified infrared emission bands are ubiquitous in many astronomical sources. These bands are widely, if not unanimously, attributed to collective…”
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Astrochemical Modeling of Propargyl Radical Chemistry in TMC-1
Published in The Astrophysical journal (01-11-2023)“…Abstract Recent detections of aromatic species in dark molecular clouds suggest that formation pathways may be efficient at very low temperatures and…”
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Astronomical Detection of the Interstellar Anion C10H− toward TMC-1 from the GOTHAM Large Program on the Green Bank Telescope
Published in Astrophysical journal. Letters (01-02-2023)“…Using data from the Green Bank Telescope (GBT) Observations of TMC-1: Hunting for Aromatic Molecules (GOTHAM) survey, we report the first astronomical…”
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Experimental Studies of Gas-Phase Reactivity in Relation to Complex Organic Molecules in Star-Forming Regions
Published in ACS earth and space chemistry (18-07-2019)“…The field of astrochemistry concerns the formation and abundance of molecules in the interstellar medium, star-forming regions, exoplanets, and solar system…”
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High Spectral Resolution Observations of Propynal (HCCCHO) toward TMC-1 from the GOTHAM Large Program on the GBT
Published in The Astrophysical journal (01-11-2024)“…Abstract We used new high spectral resolution observations of propynal (HCCCHO) toward TMC-1 and in the laboratory to update the spectral line catalog…”
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Detection of Interstellar E-1-cyano-1,3-butadiene in GOTHAM Observations of TMC-1
Published in The Astrophysical journal (01-05-2023)“…Abstract We report the detection of the lowest-energy conformer of E -1-cyano-1,3-butadiene ( E -1- C 4 H 5 CN ), a linear isomer of pyridine, using the fourth…”
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CO Diffusion and Desorption Kinetics in CO2 Ices
Published in The Astrophysical journal (10-01-2018)“…The diffusion of species in icy dust grain mantles is a fundamental process that shapes the chemistry of interstellar regions; yet, measurements of diffusion…”
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On the Origin of Infrared Bands Attributed to Tryptophan in Spitzer Observations of IC 348
Published in Astrophysical journal. Letters (01-06-2024)“…Abstract Infrared emission features toward interstellar gas of the IC 348 star cluster in Perseus have been recently proposed to originate from the amino acid…”
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Significant Chiral Asymmetry Observed in Neutral Amino Acid Ultraviolet Photolysis
Published in Journal of the American Chemical Society (07-11-2024)“…The origin of homochirality in biological organisms remains an open question. Some suggest that its origin might be extraterrestrial, specifically due to the…”
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Discovery of Interstellar 2-Cyanoindene (2-C9H7CN) in GOTHAM Observations of TMC-1
Published in Astrophysical journal. Letters (01-10-2022)“…Abstract We present laboratory rotational spectroscopy of five isomers of cyanoindene (2-, 4-, 5-, 6-, and 7-cyanoindene) using a cavity Fourier transform…”
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A Search for Heterocycles in GOTHAM Observations of TMC‑1
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (05-05-2022)“…We have conducted an extensive search for nitrogen-, oxygen-, and sulfur-bearing heterocycles toward Taurus Molecular Cloud 1 (TMC-1) using the deep, broadband…”
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Rate Constants of the CN + Toluene Reaction from 15 to 294 K and Interstellar Implications
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (01-10-2020)“…CN is known for its fast reactions with hydrocarbons at low temperatures, but relatively few studies have focused on the reactions between CN and aromatic…”
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Collisional excitation of HNC by He found to be stronger than for structural isomer HCN in experiments at the low temperatures of interstellar space
Published in Nature chemistry (01-07-2022)“…HCN and its unstable isomer HNC are widely observed throughout the interstellar medium, with the HNC/HCN abundance ratio correlating strongly with temperature…”
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Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2
Published in Proceedings of the National Academy of Sciences - PNAS (20-03-2018)“…Oceanic Anoxic Event 2 (OAE 2), occurring ∼94 million years ago, was one of the most extreme carbon cycle and climatic perturbations of the Phanerozoic Eon. It…”
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CO2 INFRARED PHONON MODES IN INTERSTELLAR ICE MIXTURES
Published in The Astrophysical journal (20-11-2016)“…ABSTRACT CO2 ice is an important reservoir of carbon and oxygen in star- and planet-forming regions. Together with water and CO, CO2 sets the physical and…”
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Detection of interstellar 1-cyanopyrene: A four-ring polycyclic aromatic hydrocarbon
Published in Science (American Association for the Advancement of Science) (15-11-2024)“…Polycyclic aromatic hydrocarbons (PAHs) are organic molecules containing adjacent aromatic rings. Infrared emission bands show that PAHs are abundant in space,…”
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Low Temperature Kinetics of the Reaction Between Methanol and the CN Radical
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (21-11-2019)“…Methanol (CH3OH) is considered by astronomers to be the simplest complex organic molecule (COM) and has been detected in various astrophysical environments,…”
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Reassessing the origin and chronology of the unique achondrite Asuka 881394: Implications for distribution of 26Al in the early Solar System
Published in Geochimica et cosmochimica acta (01-01-2019)“…The achondrite Asuka 881394 has mineralogy broadly similar to that of eucrites but is isotopically, chemically and texturally distinct from them. Previous U-Pb…”
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Rate Constants of the CN plus Toluene Reaction from 15 to 294 K and Interstellar Implications
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (01-10-2020)“…CN is known for its fast reactions with hydrocarbons at low temperatures, but relatively few studies have focused on the reactions between CN and aromatic…”
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PDRs4All: A JWST Early Release Science Program on Radiative Feedback from Massive Stars
Published in Publications of the Astronomical Society of the Pacific (01-05-2022)“…Abstract Massive stars disrupt their natal molecular cloud material through radiative and mechanical feedback processes. These processes have profound effects…”
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