OH CLOUDS IN THE SOURCES W-44 AND W-51 IN THE 1665-MHZ AND 1667-MHZ ABSORPTION-LINES

The structure of the OH absorption feature in the sources W 44 and W 51 at 1665 and 1667 MHz was studied with a resolution of 2' x 110' x 5.5 km g-1 using the RATAN-600 radio telescope. The effective area of the antenna is 1000 m2; the standard deviation on the recordings is 0.15 K in brightness temperature. Parameters of OH absorbing clouds were determined, and these were compared with HI absorbing clouds.