Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89.1391b&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 89, Sept. 1984, p. 1391-1397.
Astronomy and Astrophysics
Astronomy
13
Hydroxyl Emission, Molecular Clouds, Very Long Base Interferometry, Water Masers, Angular Resolution, H Ii Regions, Zeeman Effect
Scientific paper
The authors have mapped the W51 ground-state OH masers using a VLBI array. The masers are clustered in two separate regions, one of which is coincident with an ultracompact H II region. Both maser clusters are nearly 3×1016cm in diameter. Two pairs of Zeeman split masers are identified in the 1720-MHz transition and indicate magnetic field strengths of 6 and 10 mG at two locations 500 AU apart in the compact H II region G49.5-0.4(e2).
Benson James M.
Gaume Ralph A.
Mutel Robert L.
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