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Search for CO isotopes in cores of massive molecular clouds
Wu, YF; Wu, JW; Wang, JZ; Yan, HR
2001
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
ISSN0275-1062
Volume25Issue:1Pages:53-58
AbstractUsing the newly installed SIS receiving system of the 13.7 m telescope of PMO, the CO isotope line pair, (CO)-C-13 and (CO)-O-18 J = 1 - 0, were observed in a search for dense cores in 64 IRAS sources with high color indices or H2O masers. Maps were obtained for some of the sources. The line pair was detected in all the target sources. The emission of (CO)-C-13 J = 1 - 0 is strong showing that the emission regions are dense. The pair lines of the CO isotopes were measured for the first time in at least 60 sources. Antenna temperatures, center velocities and line widths are obtained with Gaussian fitting. Preliminary analyses were made for the emission intensities and line profiles.
KeywordInterstellar Molecules Interstellar Dynamics Star Formation
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordREGIONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000167510400007
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8209
Collection期刊(老文献)
Affiliation1.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
2.CAS Peking Univ Joint Beijing Astrophys Ctr, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Qinghai Stn, Delingha 817000, Peoples R China
Recommended Citation
GB/T 7714
Wu, YF,Wu, JW,Wang, JZ,et al. Search for CO isotopes in cores of massive molecular clouds[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2001,25(1):53-58.
APA Wu, YF,Wu, JW,Wang, JZ,&Yan, HR.(2001).Search for CO isotopes in cores of massive molecular clouds.CHINESE ASTRONOMY AND ASTROPHYSICS,25(1),53-58.
MLA Wu, YF,et al."Search for CO isotopes in cores of massive molecular clouds".CHINESE ASTRONOMY AND ASTROPHYSICS 25.1(2001):53-58.
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