The structure of the H2O maser source in W3 OH

Details The structure of the H2O maser source in W3 OH The structure of the H2O maser source in W3 OH

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pazh....7..358g&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 7, June 1981, p. 358-365.) Soviet Astronomy Letters, vol. 7, May-June 1981, p. 198-203.

Astronomy and Astrophysics

Astronomy

5

Hydrogen Clouds, Hydroxyl Emission, Radio Sources (Astronomy), Very Long Base Interferometry, Water Masers, Astronomical Spectroscopy, Emission Spectra, Fourier Transformation

Scientific paper

The structure of the water maser in the object W3 OH is investigated with the global radiointerferometry network at three epochs, including a period of rapid spectral changes. A multiple fringe-rate mapping technique is used to determine the relative position and time variations of individual compact sources. The sources are found to be spread along an arc with a radius of 0.5 arcsec, and the H2O molecules appear to be distributed throughout the region, although pumping develops only in certain places, producing maser emission at discrete points. The variability of the individual sources appears to reflect changes in the pumping levels.

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