Atlas of Main-line OH Masers in the Galactic Longitude Range 3° to 60°

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Abstract
We tabulate all 55 OH main-line masers discovered to date in the galactic plane between longitude 3° and 60°. For most of these we show current spectra, which have been taken with the Parkes 64 m radio telescope, in both senses of circular polarization on the 1665 MHz and/or 1667 MHz transitions; for some sources we give new position estimates, and several sources are reported for the first time. We discuss many sources individually and note that while most of the main-line OH masers probably pinpoint compact HII regions and sites of current star formation, a few appear to be unusual varieties occurring in circumstellar shells, possibly associated with late-type stars.

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