PMO OpenIR  > 期刊(老文献)
CH3CN J=8-7 AND CS J=3-2 EMISSION IN ORION KL
ZENG, Q ; PEI, CC
1995
Source PublicationASTROPHYSICS AND SPACE SCIENCE
ISSN0004-640X
Volume229Issue:2Pages:301—310
AbstractThe data of the line series CH3CN 8(K) - 7(K) K = 0 - 7 and line CS J = 3 - 2 were taken simultaneously. At beam size of 16 '' the emissions of CH3CN and CS have a common center position located near 1Rc2 with deviations Delta alpha similar to -8 '' and Delta delta similar to 5 ''. The observed data show that in Orion KL core the integrated intensities of the two species have double peaks separated by a space of 14 ''. The 2-dimension Gaussian fitting plots (FWHM) are ellipses of D-maj = 26 '' and D-min = 22 '' for CH3CN 8(K) - 7(K) K = 3 - 6 and D'(maj) = 39 '' D'(min) = 31 '' for CS J = 3 - 2 at a distance about 450 pc. Towards the multiple line emission region of CH3CN 8(K) - 7(K) K = 3 - 6, using a simplified very large velocity gradient model to solve the statistical equilibrium and radiative transfer equations, we find to fit the observed results, the optimum physical parameters and kinetic temperature T-k similar to 120 K, density n(H-a) similar to 1.2 x 10(5) cm(-3), velocity gradient V-gr similar to 92 km s(-1) pc(-1) and the local abundance of CH3CN F-ab similar to 3 x 10(-8). However towards the region of single line emission of CS J = 3 - 2 we have to use LTE and the optical thin approximation on the assumption of T-k = 120 K to obtain the lower limits of column density and then, an averaged abundance of CS of 6 x 10(-8).
Subject Area天文和天体物理
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8486
Collection期刊(老文献)
Recommended Citation
GB/T 7714
ZENG, Q,PEI, CC. CH3CN J=8-7 AND CS J=3-2 EMISSION IN ORION KL[J]. ASTROPHYSICS AND SPACE SCIENCE,1995,229(2):301—310.
APA ZENG, Q,&PEI, CC.(1995).CH3CN J=8-7 AND CS J=3-2 EMISSION IN ORION KL.ASTROPHYSICS AND SPACE SCIENCE,229(2),301—310.
MLA ZENG, Q,et al."CH3CN J=8-7 AND CS J=3-2 EMISSION IN ORION KL".ASTROPHYSICS AND SPACE SCIENCE 229.2(1995):301—310.
Files in This Item:
File Name/Size DocType Version Access License
1995016CH3CN J=8-7 A(499KB) 开放获取LicenseView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[ZENG, Q]'s Articles
[PEI, CC]'s Articles
Baidu academic
Similar articles in Baidu academic
[ZENG, Q]'s Articles
[PEI, CC]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[ZENG, Q]'s Articles
[PEI, CC]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 1995016CH3CN J=8-7 AND CS J=3-2 EMISSION IN ORION KL.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.