THE FRACTAL DIMENSION OF THE rho OPHIUCUS MOLECULAR CLOUD COMPLEX

	THE FRACTAL DIMENSION OF THE rho OPHIUCUS MOLECULAR CLOUD COMPLEX
	Lee, Yongung 1; Li, Di2 ; Kim, Y. S.1,3; Jung, J. H.1; Kang, H. W.1; Lee, C. H.1; Yim, I. S.1; Kim, H. G.1
刊名	JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY
	2016-12-31
卷号	49 期号:6 页码:255-259
关键词	ISM : Ophiuchus Molecular Cloud ISM : structure ISM : fractal dimension ISM : turbulence
英文摘要	We estimate the fractal dimension of the p Ophiuchus Molecular Cloud Complex, associated with star forming regions. We selected a cube (v, l,b) database, obtained with J =1-0 transition lines of (CO)-C-12 and (CO)-C-13 at a resolution of 22 '' using a multibeam receiver system on the 14-m telescope of the Five College Radio Astronomy Observatory. Using a code developed within IRAF, we identified slice-clouds with two threshold temperatures to estimate the fractal dimension. With threshold temperatures of 2.25 K (3 sigma) and 3.75 K (5 sigma), the fractal dimension of the target cloud is estimated to be D = 1.52-1.54, where P alpha A(D/2), which is larger than previous results. We suggest that the sampling rate (spatial resolution) of observed data must be an important parameter when estimating the fractal dimension, and that narrower or wider dispersion around an arbitrary fit line and the intercepts at NP = 100 should be checked whether they relate to rms noise level or characteristic structure of the target cloud. This issue could be investigated by analysing several high resolution databases with different quality (low or moderate sensitivity).
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	INTERSTELLAR-MEDIUM
收录类别	SCI
语种	英语
WOS记录号	WOS:000391346400003
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6803]
专题	国家天文台_射电天文研究部
作者单位	1.Korea Astron & Space Sci Inst, 776 Daedukdae Ro, Daejeon 34055, South Korea 2.Natl Astron Observ, Dept Radio Astron, Beijing 100012, Peoples R China 3.Chungnam Natl Univ, Dept Astron & Space Sci, Daejeon 34148, South Korea
推荐引用方式 GB/T 7714	Lee, Yongung,Li, Di,Kim, Y. S.,et al. THE FRACTAL DIMENSION OF THE rho OPHIUCUS MOLECULAR CLOUD COMPLEX[J]. JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY,2016,49(6):255-259.
APA	Lee, Yongung.,Li, Di.,Kim, Y. S..,Jung, J. H..,Kang, H. W..,...&Kim, H. G..(2016).THE FRACTAL DIMENSION OF THE rho OPHIUCUS MOLECULAR CLOUD COMPLEX.JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY,49(6),255-259.
MLA	Lee, Yongung,et al."THE FRACTAL DIMENSION OF THE rho OPHIUCUS MOLECULAR CLOUD COMPLEX".JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY 49.6(2016):255-259.