Journal of The Korean Astronomical Society (천문학회지)
- Volume 29 Issue spc1
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- Pages.257-258
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- 1996
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- 1225-4614(pISSN)
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- 2288-890X(eISSN)
PROPERTIES OF OH/IR STARS WITH THE IRAS LRS SPECTRA
- CHEN P. S. (Department of Physics & Astronomy, University of Calgary) ;
- KWOK S. (Yunnan Observatory & Joint Laboratory for Optical Astronomy, Chinese Academy of Science)
- Published : 1996.12.01
Abstract
1607 OH/IR stars associated with IRAS sources are assembled and the IRAS LRS spectra of 980 OH/IR stars are examined in this paper. The nature of the circumstellar dust for these sources is classified. The distributions of these subgroups of OH/IR stars in the IRAS color-color diagram and the period-color diagram are interpreted with their evolutionary status. The Galactic and the velocity distributions of these subgroups of OH/IR stars are also presented. The correlations among the expanding velocities of the envelopes, colors, periods and the pumping efficiencies for subgroups of OH/IR stars are investigated to outline the evolutionary status of OH/IR stars.