Titlebook: Late Stages of Stellar Evolution; Proceedings of the W S. Kwok,S. R. Pottasch Conference proceedings 1987 D. Reidel Publishing Company, Dor

Ophthalmoscope

High-Resolution Radio Observations of OH/IR StarsIR stars, spanning a range from 5 to 10. AU. The OH(1612) data indicate that the gas in the outer envelope (R?1000 AU) is radially expanding at a nearly constant velocity which can range from about 3 to 40 km s.. Possible second-order effects include velocity streaming, radial acceleration, and perh

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Identification of OH/IR Stars from Color Selected IRAS Sourcescan easily detect sources of ~50 mJy, so giving a 20 fold improvement in sensitivity. Results of both a 1612 MHz and a 1665/7 MHz survey from Arecibo are presented. These show that color-selected samples include sources with three distinctly different galactic latitude distributions. Objects with (6