IRAS 18043
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IRAS 18043-2116 (OH 9.1 -0.4) -- a possible water fountain star.

The 22 GHz H2O maser is searched for 85 post-AGB candidates using the Tidbinbilla 70m radio telescope between 2003 April to 2004 April. There are 21 detections. Also present Mopra observations of 86 GHz SiO masers to a sub-sample. Five stars were found to show high velocity H2O maser lines and are water fountain star candidates, including IRAS 18043-2116 (their source name: b292). IRAS 18043-2116's H2O maser features showed a Vexp >= 102 km/s. The Vlsr = 87 km/s. They found that the H2O maser strengths are varying (perhaps increasing) with time. (from Deacon et al., 2007ApJ...658.1096D)
(figure: H2O maser spectra of IRAS 18043-2116.)
IRAS181.gif (9949 字节)
 

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