SIMBAD references

2010ApJS..188..209K - Astrophys. J., Suppl. Ser., 188, 209-241 (2010/May-0)

Simultaneous observations of SiO and H2 O masers toward known stellar SiO and H2 O maser sources. I.

KIM J., CHO S.-H., OH C.S. and BYUN D.-Y.

Abstract (from CDS):

We present the results of simultaneous observations of both SiO and H2 O masers toward 166 known SiO and H2O maser sources using the Korean VLBI Network Yonsei 21 m radio telescope during 2009 June. Both SiO and H2O maser emission were detected from 112 sources giving a detection rate of 67% at one epoch observation. SiO-only maser emission was detected from 42 sources, while H2O-only maser emission was detected from four sources. Most of the SiO masers appear around the stellar velocity, while H2 O masers show different characteristics compared with SiO masers. There are more than 20 sources that show a one-way peak or double peaks with respect to the stellar velocity and SiO maser peak velocity. The H2 O maser peak and integrated intensity ratios with respect to those of SiO (v = 1) show increasingly larger values from Mira variables, to OH/IR stars, to semi-regular variables. In addition, the IRAS two-color diagram of SiO and H2 O maser observational results is discussed.

Abstract Copyright:

Journal keyword(s): circumstellar matter - masers - radio lines: stars - stars: late-type

Simbad objects: 170

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