@article{oai:ir.kagoshima-u.ac.jp:00009099,
 author = {Imai, Hiroshi and 今井, 裕 and Chong, Sze Ning and He, Jin-Hua and Nakashima, Jun-Ichi and 中島, 淳一 and Hsia, Chih-Hao and Sakai, Takeshi and 酒井, 剛 and Deguchi, Shuji and 出口, 修至 and Koning, Nico},
 issue = {5},
 journal = {Publications of the Astronomical Society of Japan},
 month = {},
 note = {We observed four "water fountain" sources in the CO J = 3→2 line emission with the Atacama Submillimeter Telescope Experiment (ASTE) 10m telescope in 2010–2011. The water fountain sources are evolved stars that form high-velocity collimated jets traced by H2O maser emission. The CO line was detected only from IRAS 16342-3814. The present work confirmed that the 12CO to 13CO line intensity ratio is ~1.5 at the systemic velocity. We discuss the origins of the very low 12CO-to-13CO intensity ratio, as possible evidence for "hot-bottom burning" in an oxygen-rich star, and the CO intensity variation in IRAS 16342-3814.},
 title = {Extremely Strong 13CO J = 3→2 Line in the "Water Fountain" IRAS 16342-3814: Evidence for the Hot-Bottom Burning},
 volume = {64},
 year = {2012}
}