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- W2095294995 abstract "view Abstract Citations (88) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Discovery of Interstellar Acetylene Lacy, J. H. ; Evans, Neal J., II ; Achtermann, J. M. ; Bruce, D. E. ; Arens, J. F. ; Carr, J. S. Abstract Absorption by interstellar acetylene (C2H2) has been detected in the spectra of three IR sources embedded in molecular clouds. One or more lines in the 13.7 micron nu5 vibration-rotation band were detected toward GL 2591, W3 IRS 5, and OMC-1 IRc2. The observations require C2H2 abundances of about 0.0003 to 0.003 of CO. Such abundances can be explained by models in which the molecular clouds are chemically unevolved or in which gas phase abundances have been enhanced by recent evaporation of grain mantles. Publication: The Astrophysical Journal Pub Date: July 1989 DOI: 10.1086/185480 Bibcode: 1989ApJ...342L..43L Keywords: Acetylene; Infrared Spectra; Interstellar Extinction; Interstellar Gas; Molecular Clouds; Pre-Main Sequence Stars; Emission Spectra; Infrared Sources (Astronomy); Line Spectra; Vibrational Spectra; Astrophysics; INTERSTELLAR: ABUNDANCES; INTERSTELLAR: MOLECULES; STARS: PRE--MAIN-SEQUENCE; INFRARED: SPECTRA full text sources ADS | data products SIMBAD (5)" @default.
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- W2095294995 date "1989-07-01" @default.
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- W2095294995 title "Discovery of interstellar acetylene" @default.
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