OH and H2O masers in the Monoceros-R2 molecular cloud

Details OH and H2O masers in the Monoceros-R2 molecular cloud OH and H2O masers in the Monoceros-R2 molecular cloud

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...204...21k&link_type=abstract

Astrophysical Journal, vol. 204, Feb. 15, 1976, pt. 1, p. 21-25.

Astronomy and Astrophysics

Astrophysics

28

Hydroxyl Emission, Interstellar Masers, Microwave Emission, Molecular Spectra, Water Vapor, H Ii Regions, Infrared Radiation, Interstellar Magnetic Fields, Interstellar Matter, Millimeter Waves, Polarization Characteristics

Scientific paper

Emission from OH and H2O masers has been detected in the direction of the Monoceros-R2 molecular cloud. Only 1612- and 1665-MHz masers are observed, and from the emission characteristics of the sources, we conclude that they arise in different locations; we are observing both type I and type IIb OH masers in this region. Two velocity components of the 1665-MHz source are highly linearly polarized (about 100%). This result allows us to determine limits on the magnetic-field strength in the emission region, and to estimate its orientation. The relation of the maser emission to the embedded H II region and to the infrared sources in this cloud is discussed. The Mon-R2 region is similar to the Orion nebula complex, and appears to represent a somewhat earlier stage of star formation.

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