Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326..954g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 15, 1988, p. 954-966. Research supported by the Smithsonian Astr
Astronomy and Astrophysics
Astrophysics
74
Hydroxyl Emission, Interstellar Magnetic Fields, Interstellar Masers, Line Spectra, Star Formation, Very Long Base Interferometry, Astronomical Spectroscopy, Circular Polarization, Molecular Clouds, Polarized Electromagnetic Radiation, Zeeman Effect
Scientific paper
The authors have conducted a six-station, VLBI observation of the ground state 1665 MHz OH emission source in W3(OH) with full polarization information. They have been able (1) to produce spectral line VLBI synthesis maps in all Stokes parameters; (2) to identify several Zeeman pairs; (3) to determine the percent of linear, circular, and total polarization of the emission of each feature; and (4) to infer some information about the three-dimensional structure of the magnetic field. Eighty-one maser components stronger than 1.5 Jy were detected. Sixty-five exhibited pure circular polarization. These observations suggest that the OH cloud is permeated with a magentic field having an average strength of 6 mG.
Burke Bernard F.
Garcia-Barreto Antonio J.
Haschick Aubrey David
Moran James Michael
Reid Mark J.
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