SIMBAD references

We present the results of simultaneous observations of SiO v = 1, 2, ²⁹SiO v = 0, J = 1-0, and H₂ O 6₁₆-5₂₃maser lines toward 152 known stellar H₂ O maser sources using the Yonsei 21 m radio telescope of the Korean VLBI Network from 2009 June to 2011 January. Both SiO and H₂ O masers were detected from 62 sources with a detection rate of 40.8%. The SiO-only maser emission without H₂ O maser detection was detected from 27 sources, while the H₂O-only maser without SiO maser detection was detected from 22 sources. Therefore, the overall SiO maser emission was detected from 89 sources, resulting in a detection rate of 58.6%. We have identified 70 new detections of the SiO maser emission. For both H₂ O and SiO maser detected sources, the peak and integrated antenna temperatures of SiO masers are stronger than those of H₂ O masers in both Mira variables and OH/IR stars and the relative intensity ratios of H₂ O to SiO masers in OH/IR stars are larger than those in Mira variables. In addition, distributions of 152 observed sources were investigated in the IRAS two-color diagram.