High-resolution 18 CM spectra of OH/IR stars

Details High-resolution 18 CM spectra of OH/IR stars High-resolution 18 CM spectra of OH/IR stars

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..433f&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 93, Feb. 1987, p. 433-439.

Astronomy and Astrophysics

Astronomy

21

Hydroxyl Emission, Infrared Stars, Interstellar Masers, Radio Spectra, Stellar Spectra, Signal To Noise Ratios, Spectral Resolution, Stellar Composition, Stellar Mass Ejection, Stellar Models

Scientific paper

High-velocity-resolution, high-signal-to-noise spectra have been obtained for the 18 cm maser emission lines from a number of optically visible OH/IR stars. The spectra have been interpreted in terms of a recent model by Alcock and Ross (1986), in which OH/IR stars lose mass in discrete elements rather than by a continuous wind. Comparison of the observed spectra with synthetic spectra shows that the lines are the composite emission from thousands or tens of thousands of individual elements.

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