VLBI observations of hydroxyl molecular masers in G45.07+0.13.

Details VLBI observations of hydroxyl molecular masers in G45.07+0.13. VLBI observations of hydroxyl molecular masers in G45.07+0.13.

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996acasn..37..387z&link_type=abstract

Acta Astron. Sin., Vol. 37, No. 4, p. 387 - 395

Astronomy and Astrophysics

Astronomy

H Ii Regions: Vlb Interferometry, H Ii Regions: Oh Masers

Scientific paper

Both the left - and right - handed circularly polarized radiations of the masers in the ultra-compact H II region G45.07+0.13, due to the transition from the OH ground state 2Π3/2, J = 3/2, F = 1→1, have been observed. The author has constructed the map of the maser structure with a relative position accuracy of 20 mas. He has found that most maser components are located in the front of the comet-shaped H II region and that their distance to the center of the H II region is approximately 0″4. In the maser active region a pair of Zeeman-split lines have been found and from the difference of their radial velocities a magnetic field of 3 mG has been inferred. Similar to the observation of G45.07+0.13, the diameter of the maser cluster near the compact H II region has the order of magnitude of 1016cm.

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