Observations of various methanol maser transitions toward the NGC 6334 region

Details Observations of various methanol maser transitions toward the NGC 6334 region Observations of various methanol maser transitions toward the NGC 6334 region

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341..839m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 341, June 15, 1989, p. 839-846.

Astronomy and Astrophysics

Astrophysics

36

Electron Transitions, Interstellar Masers, Interstellar Radiation, Line Spectra, Methyl Alcohol, Molecular Clouds, H Ii Regions, Thermal Emission, Water Masers

Scientific paper

A number of CH3OH lines toward the H-II region F in the NGC 6334 star-forming region have been observed in April 1987 with the 140-foot Green Bank telescope. Strong maser emission is found in the 2(1) to 3(0)E transition at 19.9 GHz and in the 9(2) to 10(1)A(+) transition at 23.1 GHz. The results suggest that the 12.1, 19.9, and 23.1 GHz methanol masers may be closely associated with compact H-II regions and OH masers, and that the 25 GHz masers may be associated with dense condensations in an earlier evolutionary state.

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