MERLIN spectral line observations of circumstellar shells around two OH/IR stars

Details MERLIN spectral line observations of circumstellar shells around two OH/IR stars MERLIN spectral line observations of circumstellar shells around two OH/IR stars

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.299..131n&link_type=abstract

Nature, vol. 299, Sept. 9, 1982, p. 131-134.

Astronomy and Astrophysics

Astronomy

26

Infrared Stars, Stellar Envelopes, Stellar Spectra, Very Long Base Interferometry, Water Masers, Astronomical Maps, Binary Stars, Line Spectra, Stellar Motions

Scientific paper

MERLIN observations of two OH/IR stars, OH127.8-0.0 and OH104.9+2.4, are presented. The emission in twelve frequency channels were mapped, and the results for OH127.8-0.0 confirm the simple expanding shell model. The maps for OH104.9+2.4 exhibit a more complex motion, and it is concluded that this arises from small-scale turbulence and from a large-scale nonradial motion whose simplest explanation is that the shell is rotating about the star as well as expanding from it. The kinematics of the shell are modelled and the resulting parameters, which agree with the data, are shown.

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