SIMBAD references

2013AJ....145...22K - Astron. J., 145, 22 (2013/January-0)

Simultaneous observations of SiO and H2O masers toward known stellar H2O maser sources.

KIM J., CHO S.-H. and KIM S.J.

Abstract (from CDS):

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.

Abstract Copyright:

Journal keyword(s): circumstellar matter - masers - radio lines: stars - stars: AGB and post-AGB - stars: late-type - surveys

VizieR on-line data: <Available at CDS (J/AJ/145/22): table2.dat refs.dat>

Simbad objects: 157

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