CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959

doi:10.1093/pasj/61.6.1365

YNAO OpenIR > 大样本恒星演化研究组

	CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959
	Imai, H 1; He JH(何金华)2 ; Nakashima, J 3; Ukita, N 4; Deguchi, S 5; Koning, N 6; Imai, H (reprint author), Kagoshima Univ, Grad Sch Sci & Engn, 1-21-35 Korimoto, Kagoshima 8900065, Japan.
发表期刊	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2009
卷号	61 期号:6 页码:1365-1372
DOI	10.1093/pasj/61.6.1365
产权排序	第2完成单位
收录类别	SCI ; EI
关键词	Stars: Agb And post-Agb Stars: Individual (Iras 16342-3814 Iras 18286-0959)
摘要	We observed CO J = 3-2 emission from "water-fountain" sources, which exhibit high-velocity collimated stellar jets traced by H(2)O maser emission, with the Atacama Submillimeter Telescope Experiment (ASTE) 10m telescope. We detected CO emission from two sources: IRAS 16342-3814 and IRAS 18286-0959. The IRAS 16342-3814 CO emission exhibits a spectrum that could be well fit to a Gaussian profile, rather than to a parabolic profile, with a velocity width (FWHM) of 158 +/- 6 km s(-1) and an intensity peak at V(LSR)= 50 +/- 2 km s(-1). The mass-loss rate of the star is estimated to be similar to 2.9 x 10(-5) M(circle dot) yr(-1). Our morpho-kinematic models suggest that the CO emission is optically thin, and associated with a bipolar outflow rather than with a (cold and relatively small) torus. The IRAS 18286-0959 CO emission has a velocity width (FWHM) of 3.0 +/- 0.2 km s(-1) smaller than typically seen in AGB envelopes. The narrow velocity width of-the CO emission suggests that it originates from either an interstellar molecular cloud or a slowly-rotating circumstellar envelope that harbors the H(2)O maser source.
项目资助者	Japan Society for Promotion Science [20540234] ; Research Grants Council of the Hong Kong [HKU703308P] ; Seed Funding Programme for Basic Research in HKU [200802159006]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6264
URL	查看原文
WOS记录号	WOS:000273306300019
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	ASYMPTOTIC GIANT BRANCH ; POST-AGB STARS ; MASS-LOSS ; PREPLANETARY NEBULA ; PLANETARY-NEBULAE ; EVOLVED STARS ; BIPOLAR OUTFLOWS ; 45-M TELESCOPE ; SIO MASER ; JET
EI入藏号	20215111361752
EI主题词	Velocity
EI分类号	652.1.2 Military Aircraft - 657.2 Extraterrestrial Physics and Stellar Phenomena - 714 Electronic Components and Tubes - 931.1 Mechanics
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4479
专题	大样本恒星演化研究组
通讯作者	Imai, H (reprint author), Kagoshima Univ, Grad Sch Sci & Engn, 1-21-35 Korimoto, Kagoshima 8900065, Japan.
作者单位	1.Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065 2.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan Province 650011, China 3.Department of Physics, University of Hong Kong, Pokfulam Road, Hong Kong, China 4.ALMA Project Office, National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 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,He JH,Nakashima, J,et al. CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2009,61(6):1365-1372.
APA	Imai, H.,He JH.,Nakashima, J.,Ukita, N.,Deguchi, S.,...&Imai, H .(2009).CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,61(6),1365-1372.
MLA	Imai, H,et al."CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 61.6(2009):1365-1372.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
CO J = 3–2 Emission （1238KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文