Abstract
view Abstract Citations (34) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Search for 1612 MHz OH Emission from IRAS Sources with Silicate Features Galt, J. A. ; Kwok, Sun ; Frankow, J. Abstract The result of an OH survey of IRAS sources with the objective of detecting previously unknown highly evolved stars is reported. Objects selected for observations were north of declination + 20 deg, had no known catalog associations, and showed the 9.7-micron silicate feature in either emission or absorption. Of the 144 sources observed, 25 show double-peak emission characteristic of an expanding shell and an additional two sources show a single OH emission line. One IRAS source (19566 + 3423) is found to have a peculiar twin-double-peak profile suggestive of a concentric shell structure. Unlike most other sources the OH lines in this object show strong circular polarization and time variability. Publication: The Astronomical Journal Pub Date: December 1989 DOI: 10.1086/115288 Bibcode: 1989AJ.....98.2182G Keywords: Astronomical Spectroscopy; Hydroxyl Emission; Infrared Sources (Astronomy); Silicates; Stellar Evolution; Asymptotic Giant Branch Stars; Color-Color Diagram; Emission Spectra; Infrared Astronomy Satellite; Spectral Energy Distribution; Stellar Envelopes; Astrophysics; STARS: MASS LOSS; STARS: LATE-TYPE full text sources ADS | data products SIMBAD (145)
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