Detection of strong methanol masers towards galactic H II regions

Details Detection of strong methanol masers towards galactic H II regions Detection of strong methanol masers towards galactic H II regions

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.326...49b&link_type=abstract

Nature (ISSN 0028-0836), vol. 326, March 5, 1987, p. 49-51.

Astronomy and Astrophysics

Astronomy

155

H Ii Regions, Interstellar Masers, Methyl Alcohol, Molecular Clouds, Abundance, Emission Spectra, Flux Density, Infrared Sources (Astronomy), Microwave Spectra, Thermal Emission

Scientific paper

Recently, the number of transitions as well as the number of sources showing maser emission of interstellar methanol (CH3OH) has been increased significantly. Observations of the 20 - 3-1E transition of methanol have led to the discovery of strong maser action in a number of galactic sources. Towards W3(OH), NGC 6334 and NGC 7538, these masers have flux densities of order 1,000 Jy and seem to be closely correlated with compact H II regions. The line intensities are comparable to those observed in OH. Towards other sources absorption or a combination of maser emission and absorption is observed.

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