| The Arecibo 1612 MHz survey of a complete sample of color-selected IRAS sources with 25 mum fluxes S(25) > 2 Jy detected 393 OH/IR stars. A complementary 1667 and 1665 MHz OH survey of these objects is presented here. Main-line masers have been detected in 238 surveyed objects: 18 exhibit only 1665 MHz emission, 220 exhibit 1667 MHz masers, and 119 exhibit both. The main lines were not detected in 159 objects. |
Comments:
Objects (non-detections) not included:
IRAS 19200+2101 erroneous entry in IRAS PSC
IRAS 19226+1401 molecular cloud source
IRAS 19175+1344 molecular cloud source
IRAS 18534+0215 molecular cloud source
IRAS 18521+0023 not in IRAS-PSC unknown
IRAS 18431+0005 not in IRAS-PSC unknown
IRAS 20598+1758 also 1612 MHz non-detection (Lewis et al. 1987)
IRAS 19285+1808 Carbon star
IRAS 19296+2227 OH 57.5+1.8, Carbon star
The columns for the blue- and red-shifted velocities were filled with the two highest peaks listed. The leftmost and the rightmost peaks were used to calculate the radial velocity vrad and the expansion velocity vexp of the shell.
Velocity resolution: 0.3 km/s
Upper limit for non-detections: mostly <0.1 Jy (3σ)
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