Abstract
view Abstract Citations (15) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Detection of a New Methanol Maser Transition at 9.9 GHz Slysh, V. I. ; Kalenskij, S. V. ; Val'tts, I. E. Abstract The paper reports the detection, at 9.94 GHz, of a new methanol emission line, 9(-1)-8(-2) E in observations made during April 2-3, 1992 with the 43-m NRAO radio telescope at Green Bank (West Virginia). From a sample of 11 sources, three were detected in emission for the 9(-1)-8(-2) E line: Orion-KL, Sgr B2, and W33 Met. The line in W33-Met shows properties of class I masers, while in Orion-KL and in Sgr B, the line is thermal. No lines were detected in the 4(3)-5(2) A(+) (at 9.98 GHz) and 4(3)-5(2) A- (at 10.06 GHz) transitions, which, according to theoretical predictions, might show maser emission. Publication: The Astrophysical Journal Pub Date: August 1993 DOI: 10.1086/186977 Bibcode: 1993ApJ...413L.133S Keywords: Interstellar Masers; Maser Outputs; Methyl Alcohol; Molecular Clouds; Star Formation; Electron Transitions; Emission Spectra; Astrophysics; ISM: MOLECULES; MASERS; RADIO LINES: ISM; STARS: FORMATION full text sources ADS | data products SIMBAD (11)
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