Search Results - "Burkhardt, Andrew"
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Detection of the aromatic molecule benzonitrile ( c -C 6 H 5 CN) in the interstellar medium
Published in Science (American Association for the Advancement of Science) (12-01-2018)“…Polycyclic aromatic hydrocarbons and polycyclic aromatic nitrogen heterocycles are thought to be widespread throughout the universe, because these classes of…”
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2
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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3
ALMA Observations of the Spatial Distribution of Three C2H4O2 Isomers toward Sgr B2(N)
Published in The Astrophysical journal (20-01-2019)“…The isomers have been previously investigated primarily via disparate sets of observations involving single-dish and array measurements. The only attempt at…”
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4
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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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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Ubiquitous aromatic carbon chemistry at the earliest stages of star formation
Published in Nature astronomy (01-02-2021)“…Benzonitrile (c-C 6 H 5 CN, where ‘c’ indicates a cyclic structure), a polar proxy for benzene (c-C 6 H 6 ), has the potential to serve as a highly convenient…”
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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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9
Interstellar detection of the highly polar five-membered ring cyanocyclopentadiene
Published in Nature astronomy (01-02-2021)“…Much like six-membered rings, five-membered rings are ubiquitous in organic chemistry, frequently serving as the building blocks for larger molecules,…”
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10
Modeling C-shock Chemistry in Isolated Molecular Outflows
Published in The Astrophysical journal (10-08-2019)“…Shocks are a crucial probe for understanding the ongoing chemistry within ices on interstellar dust grains, where many complex organic molecules (COMs) are…”
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An investigation of spectral line stacking techniques and application to the detection of HC11N
Published in Nature astronomy (01-02-2021)“…As the inventory of interstellar molecules continues to grow, the gulf between small species, whose individual rotational lines can be observed with radio…”
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CH3-Terminated Carbon Chains in the GOTHAM Survey of TMC-1: Evidence of Interstellar CH3C7N
Published in The Astrophysical journal (01-01-2022)“…We report a systematic study of all known methyl carbon chains toward TMC-1 using the second data release of the GOTHAM survey, as well as a search for larger…”
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HERSCHEL OBSERVATIONS OF EXTRAORDINARY SOURCES: ANALYSIS OF THE FULL HERSCHEL /HIFI MOLECULAR LINE SURVEY OF SAGITTARIUS B2(N)
Published in The Astrophysical journal (01-07-2014)“…A sensitive broadband molecular line survey of the Sagittarius B2(N) star-forming region has been obtained with the Heterodyne Instrument for the Far-Infrared…”
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CSO AND CARMA OBSERVATIONS OF L1157. I. A DEEP SEARCH FOR HYDROXYLAMINE (NH2OH)
Published in The Astrophysical journal (10-10-2015)“…ABSTRACT A deep search for the potential glycine precursor hydroxylamine (NH2OH) using the Caltech Submillimeter Observatory (CSO) at λ = 1.3 mm and the…”
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CSO AND CARMA OBSERVATIONS OF L1157. II. CHEMICAL COMPLEXITY IN THE SHOCKED OUTFLOW
Published in The Astrophysical journal (10-08-2016)“…ABSTRACT L1157, a molecular dark cloud with an embedded Class 0 protostar possessing a bipolar outflow, is an excellent source for studying shock chemistry,…”
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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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A Search for Light Hydrides in the Envelopes of Evolved Stars
Published in The Astrophysical journal (01-09-2020)“…We report a search for the diatomic hydrides SiH, PH, and FeH along the line of sight toward the chemically rich circumstellar envelopes of IRC+10216 and VY…”
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Searches for Interstellar HCCSH and H2CCS
Published in The Astrophysical journal (01-10-2019)“…A longstanding problem in astrochemistry is the inability of many current models to account for missing sulfur content. Many relatively simple species that may…”
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First Results from the Dark Skies, Bright Kids Astronomy Club Draw-a-Scientist Test
Published in Physical review. Physics education research (01-05-2020)“…This paper presents the first results from draw-a-scientist tests (DASTs) over five years that were used to measure the effect of 8-10 week long astronomy…”
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20
ALMA Observations of the Spatial Distribution of Three C 2 H 4 O 2 Isomers toward Sgr B2(N)
Published in The Astrophysical journal (20-01-2019)“…Abstract The isomers have been previously investigated primarily via disparate sets of observations involving single-dish and array measurements. The only…”
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