The discrete nature of circumstellar OH maser emission

Details The discrete nature of circumstellar OH maser emission The discrete nature of circumstellar OH maser emission

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99..314z&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, Jan. 1990, p. 314-322.

Astronomy and Astrophysics

Astronomy

10

Hydroxyl Emission, Interstellar Masers, Maser Outputs, Radio Telescopes, Signal To Noise Ratios, High Resolution, Line Shape, Stellar Mass Ejection, Stellar Winds, Water Masers

Scientific paper

The Arecibo radio telescope was used to obtain high-resolution, high-SNR 1612-MHz observations of seven circumstellar OH maser sources. Each spectrum displays the double-peaked emission line profile characteristics of an expanding shell. The jaggedness of the spectra, which varies from source to source, is consistent with statistical fluctuations in the number of discrete emitting elements contributing at a given velocity. In particular, it is found that the spectra of WX Psc and OH 53.6-0.2 contain narrow, weak, isolated emission features which may arise from individual emitting elements.

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