SIMBAD references

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 region of the Galaxy, -10°<l<15° (except |l|≤3°) and |b|≤3°, with the Nobeyama 45 m telescope. We have detected 124 out of 200 observed sources in SiO masers. Distances to the sources range approximately from 2 to 11 kpc, if estimated from the IRAS 12 and 25 µm flux densities. Radial velocities of the detected sources spread between ±260 km.s^–1. The distribution of SiO sources in the longitude-velocity diagram is compared with the H I contours. A number of sources are out of the H I limiting velocities; a group of negative-velocity (~-200 to -80 km.s^–1) sources is found at l=3°-12° region. The subsamples of sources exhibit negative and positive shifts of the average radial velocity depending on distance, suggesting evidence of a streaming motion of stars in the bulge bar.