Abstract
A survey has been made in the SiO J = 1-0, v = 1 and 2 transitions (∼ 43 GHz) for the color-selected IRAS sources in the central part of the Galaxy, −10°<l<40°and |b| ≤ 3° with the Nobeyama 45-m telescope. We have detected 338 out of 622 observed sources in SiO masers. Distances to the sources range approximately from 2 kpc to 13 kpc (estimated from the IRAS 12 and 25 μm flux densities). Radial velocities of the detected sources spread between -310 km s-1 and 300 km s-1. The subsets of sources in −10°<l<15°, which are divided by distance exhibit a systematic velocity shift with distance, suggesting evidence of noncircular motions of stars along the bulge bar.
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