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

	Extremely Strong (CO)-C-13 J=3 -> 2 Line in the "Water Fountain" IRAS 16342-3814: Evidence for the Hot-Bottom Burning
	Imai, H 1; Chong, SN 1; He JH(何金华)2 ; Nakashima, JI 3; Hsia, CH 3; Sakai, T 4; Deguchi, S 5; Koning, N 6
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2012-10-25
卷号	64 期号:5
关键词	stars: AGB and post-AGB stars: individual (IRAS 16342-3814)
ISSN号	0004-6264
通讯作者	Imai, H (reprint author), Kagoshima Univ, Grad Sch Sci & Engn, 1-21-35 Korimoto, Kagoshima 8900065, Japan.
产权排序	第二完成单位
英文摘要	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 H2O maser emission. The CO line was detected only from IRAS 16342-3814. The present work confirmed that the (CO)-C-12 to (CO)-C-13 line intensity ratio is similar to 1.5 at the systemic velocity. We discuss the origins of the very low (CO)-C-12-to-(CO)-C-13 intensity ratio, as possible evidence for "hot-bottom burning" in an oxygen-rich star, and the CO intensity variation in IRAS 16342-3814.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ASYMPTOTIC-GIANT-BRANCH ; MASS-LOSS-RATE ; PREPLANETARY NEBULA ; AGB STARS ; EVOLVED STARS ; CARBON STARS ; LOSS HISTORY ; CO ; EMISSION ; MASERS
收录类别	SCI
原文出处	http://pasj.oxfordjournals.org/content/64/5/98
语种	英语
WOS记录号	WOS:000313147600010
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4520]
专题	云南天文台_大样本恒星演化研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065 hiroimai{at}sci.kagoshima-u.ac.jp 2.Yunnan Astronomical Observatory/Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, Yunnan Province 650011, China 3.Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China 4.Institute of Astronomy, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 5.Nobeyama Radio Observatory, National Astronomical Observatory, Minamimaki, Minamisaku, Nagano 384-1305 6.Department of Physics and Astronomy, University of Calgary, Calgary, AB T2N 1N4, Canada
推荐引用方式 GB/T 7714	Imai, H,Chong, SN,He JH,et al. Extremely Strong (CO)-C-13 J=3 -> 2 Line in the "Water Fountain" IRAS 16342-3814: Evidence for the Hot-Bottom Burning[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2012,64(5).
APA	Imai, H.,Chong, SN.,He JH.,Nakashima, JI.,Hsia, CH.,...&Koning, N.(2012).Extremely Strong (CO)-C-13 J=3 -> 2 Line in the "Water Fountain" IRAS 16342-3814: Evidence for the Hot-Bottom Burning.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,64(5).
MLA	Imai, H,et al."Extremely Strong (CO)-C-13 J=3 -> 2 Line in the "Water Fountain" IRAS 16342-3814: Evidence for the Hot-Bottom Burning".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 64.5(2012).