MERLIN observations of the OH/IR stars OH 53.6-0.2, OH 138.0+7.2 and OH 141.7+3.5

Details MERLIN observations of the OH/IR stars OH 53.6-0.2, OH 138.0+7.2 and OH 141.7+3.5 MERLIN observations of the OH/IR stars OH 53.6-0.2, OH 138.0+7.2 and OH 141.7+3.5

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.207..149c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 207, March 1, 1984, p. 149-156. Research supported by t

Astronomy and Astrophysics

Astronomy

14

Hydroxyl Emission, Infrared Stars, Interstellar Masers, Radio Astronomy, Autocorrelation, Radio Interferometers

Scientific paper

OH maser emission from the three OH/IR stars OH 53.6-0.2, OH 138.0+7.2, and OH 141.7+3.5 has been mapped with an angular resolution of 0.28 arcsec and a velocity resolution of 0.7 km/s using the Jodrell Bank MERLIN array. Maps are presented of the 1612-MHz OH emission over individual velocity ranges. The maps are consistent with a uniform expanding shell model, and by fitting such models to the data the angular diameters of the shells have been estimated to an accuracy of about 25 percent. It is feasible that angular diameters could be estimated in this way for OH/IR stars at the Galactic Center, and thereby yield a value for the distance to the center.

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