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A Sensitive Survey of Dense Parts of Outflows toward Massive Cores
Sun Yan ; Xu Ye ; Yang Ji
2012
Source PublicationActa Astronomica Sinica
ISSN0001-5245
Volume53Issue:2Pages:97-105
AbstractA sample of 13 massive star-forming cores was observed in SiO(2-1),CH_3OH(2- 1) and C~(34)S(2-1) thermal lines.Nine of these cores were detected in all three lines.Among the nine SiO detections,three were new detections and were relatively faint.Most of the lines have wide wings,which might be interpreted as the evidence of ongoing energetic outflows in the cores.The line widths of SiO are generally the broadest,which might further suggest that SiO emissions are due to higher velocity outflow and are closer to the excited source. We derive the rotational temperatures,column densities,and chemical relative abundances of the cores.There is a strong correlation between SiO and CH_3OH abundances,with correlation coefficient R = 0.77,but no correlation is observed between SiO and C~(34)S.
Subject AreaAstronomy & Astrophysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8117
Collection紫金山天文台青海观测站
Recommended Citation
GB/T 7714
Sun Yan,Xu Ye,Yang Ji. A Sensitive Survey of Dense Parts of Outflows toward Massive Cores[J]. Acta Astronomica Sinica,2012,53(2):97-105.
APA Sun Yan,Xu Ye,&Yang Ji.(2012).A Sensitive Survey of Dense Parts of Outflows toward Massive Cores.Acta Astronomica Sinica,53(2),97-105.
MLA Sun Yan,et al."A Sensitive Survey of Dense Parts of Outflows toward Massive Cores".Acta Astronomica Sinica 53.2(2012):97-105.
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