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A MASSIVE PROTOSTAR EMBEDDED IN THE SCUBA CORE JCMT 18354-0649S
Zhu, Ming1; Davis, C. J.2; Wu, Yufang3; Whitney, B. A.4; Robitaille, T.5; Peng, R.6
2011-09-20
发表期刊ASTROPHYSICAL JOURNAL
卷号739期号:1
摘要We report the discovery of an extremely red object embedded in the massive SCUBA core JCMT 18354-0649S. This object is not associated with any known radio or far-IR source, though it appears in Spitzer IRAC data obtained as part of the GLIMPSE survey. At shorter wavelengths, this embedded source exhibits an extreme color, K - L' = 6.7. At an assumed distance of 5.7 kpc, this source has a near-IR luminosity of similar to 1000 L-circle dot. Its spectral energy distribution (SED) rises sharply from 2.1 mu m to 8 mu m, similar to that of a Class 0 young stellar object. Theoretical modeling of the SED indicates that the central star has a mass of 6-12 M-circle dot, with an optical extinction of more than 30. As both inflow and outflow motions are present in JCMT 18354-0649S, we suggest that this deeply embedded source is (1) a massive protostar in the early stages of accretion, and (2) the driving source of a massive molecular outflow evident in HCN J = 3-2 profiles observed toward this region.
关键词Infrared: Ism Infrared: Stars Stars: Formation
DOI10.1088/0004-637X/739/1/53
收录类别SCI
语种英语
WOS记录号WOS:000294955700053
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8095
专题射电天文研究部
作者单位1.Natl Astron Observ China, Beijing, Peoples R China
2.Joint Astron Ctr, Hilo, HI 96720 USA
3.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
4.Space Sci Inst, Boulder, CO 80301 USA
5.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
6.Caltech Submillimeter Observ, Hilo, HI 96720 USA
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Zhu, Ming,Davis, C. J.,Wu, Yufang,et al. A MASSIVE PROTOSTAR EMBEDDED IN THE SCUBA CORE JCMT 18354-0649S[J]. ASTROPHYSICAL JOURNAL,2011,739(1).
APA Zhu, Ming,Davis, C. J.,Wu, Yufang,Whitney, B. A.,Robitaille, T.,&Peng, R..(2011).A MASSIVE PROTOSTAR EMBEDDED IN THE SCUBA CORE JCMT 18354-0649S.ASTROPHYSICAL JOURNAL,739(1).
MLA Zhu, Ming,et al."A MASSIVE PROTOSTAR EMBEDDED IN THE SCUBA CORE JCMT 18354-0649S".ASTROPHYSICAL JOURNAL 739.1(2011).
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