pith. sign in

arxiv: 1204.2899 · v1 · pith:QWMYHCAInew · submitted 2012-04-13 · 🌌 astro-ph.SR

Extremely Strong ¹³CO J=3-2 Line in the "Water Fountain" IRAS 16342-3814: Evidence for the Hot-Bottom Burning

Hiroshi Imai (1) , Sze-Ning Chong (1) , Jin-Hua He (2) , Jun-ichi Nakashima (3) , Chih-Hao Hsia (3) , Takeshi Sakai (4) , Shuji Deguchi (5) , Nico Koning (6) ((1) Graduate School of Science
show 13 more authors
Engineering Kagoshima University (2) Yunnan Astronomical Observatory Chinese Academy of Sciences (3) Department of Physics The University of Hong Kong (4) Institute of Astronomy The University of Tokyo (5) Nobeyama Radio Observatory National Astronomical Observatory (6) Department of Physics Astronomy University of Calgary)
This is my paper
classification 🌌 astro-ph.SR
keywords linewaterfountainintensityirasburningemissionevidence
0
0 comments X
read the original abstract

We observed four "water fountain" sources in the CO J=3-2 line emission with the Atacama Submillimeter Telescope Experiment (ASTE) 10 m telescope in 2010-2011. The water fountain sources are evolved stars that form high-velocity collimated jets traced by water maser emission. The CO line was detected only from IRAS 16342-3814. The present work confirmed that the ^{12}CO to ^{13}CO line intensity ratio is ~1.5 at the systemic velocity. We discuss the origins of the very low ^{12}CO to ^{13}CO intensity ratio, as possible evidence for the "hot-bottom burning" in an oxygen-rich star, and the CO intensity variation in IRAS 16342-3814.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.