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  • 1
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    Unknown
    New interstellar molecular transitions in the 2 millimeter range (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A Sgr B2 kinetic temperature of about 47 K is derived based on observations of K components of the 9K-8K transition of CH3CCH. Interstellar line emission is detected in the 2 mm wavelength region from SO, (S-34)O, SO2, CH3OH, CH3CCH, CH3CH2CN, HC3N, and nine unidentified transitions. The methylacetylene K component data combined with the derived data reduction technique, demonstrates the utility of the molecule as a temperature probe of molecular clouds when two or more rotational transitions are observed. Evidence for the existence of interstellar HNO is presented, and an attempt is made to detect sulfuric acid, formic anhydride, and the 0-18 isotopic for CO2 in interstellar clouds and in the Venusian atmosphere during inferior conjunction.
    Keywords: ASTRONOMY
    Type: Astrophysical Journal; vol. 251
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Radio searches for additional interstellar molecules (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Observations in the 2-mm wavelength range are reported which yield new interstellar molecular transitions of NH2CHO, SO2, H2CCO, U150820.5, and U150850.0 toward Sgr B2, and SO2, CH2CHCN, HCOOCH3, and U153513.0 toward Orion A. The first interstellar searches for HOCl, CH3CH2CCH, and CH3SiH3 were conducted, but these species were not detected. During these observations limits were also obtained on 2-mm wave transitions of N2O and NaOH toward several galactic sources of molecular emission.
    Keywords: ASTRONOMY
    Type: Astronomy and Astrophysics (ISSN 0004-6361); 126; 2 c
    Format: text
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    NASA TECHNICAL REPORTS
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