IRAS 19190
my home upper CIT3 IRAS 15445 IRAS 15544 IRAS 16342 IRAS 16552 IRAS 18043 IRAS 18139 IRAS 18286 IRAS 18450 IRAS 18460 IRAS 18596 IRAS 19067 IRAS 19134 IRAS 19190 W Hya

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IRAS 19190+1102 (PN PM 1-298) -- a likely but strange water fountain star

OH 1612 and 1667 MHz masers and H2O masers detected in IRAS 19190+1102. OH and H2O maser show larger H2O Vexp and different masers show different Vlsr. It is possibly a water fountain star, but looks really strange. Interestellar emission contamination should be considered. (from Likkel, 1989ApJ...344..350L)
(figure: left -- OH masers; right -- H2O masers detected in different epoches. X_top: km/s, Y: Jy.)
IRAS194.gif (17132 字节) IRAS195.gif (11838 字节)
 

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