The discrete nature of circumstellar OH maser emission
- Iowa Univ., Iowa City (USA)
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. 14 refs.
- OSTI ID:
- 6863320
- Journal Information:
- Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 99; ISSN 0004-6256; ISSN ANJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
ANTENNAS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EMISSION SPECTRA
EQUIPMENT
HYDROGEN COMPOUNDS
HYDROXIDES
INTERSTELLAR SPACE
MASERS
MASS TRANSFER
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
ORIGIN
OXYGEN COMPOUNDS
RADIO EQUIPMENT
RADIO TELESCOPES
RESOLUTION
SIGNAL-TO-NOISE RATIO
SPACE
SPECTRA
STARS
STELLAR ACTIVITY
STELLAR WINDS
TELESCOPES
WATER
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
ANTENNAS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
EMISSION SPECTRA
EQUIPMENT
HYDROGEN COMPOUNDS
HYDROXIDES
INTERSTELLAR SPACE
MASERS
MASS TRANSFER
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
ORIGIN
OXYGEN COMPOUNDS
RADIO EQUIPMENT
RADIO TELESCOPES
RESOLUTION
SIGNAL-TO-NOISE RATIO
SPACE
SPECTRA
STARS
STELLAR ACTIVITY
STELLAR WINDS
TELESCOPES
WATER