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Exploring morphological correlations among H2CO, (CO)-C-12, MSX and continuum mappings
Zhang, Chuan Peng1,2; Esimbek, Jarken1,3; Zhou, Jian Jun1,3; Wu, Gang1,3; Du, Zhi Mao1,2
2012
Source PublicationASTROPHYSICS AND SPACE SCIENCE
Volume337Issue:1Pages:283-302
Contribution Rank1
AbstractThere are relatively few H2CO mappings of large-area giant molecular cloud (GMCs). H2CO absorption lines are good tracers for low-temperature molecular clouds towards star formation regions. Thus, the aim of the study was to identify H2CO distributions in ambient molecular clouds. We investigated morphologic relations among 6-cm continuum brightness temperature (CBT) data and H2CO (1(11)-1(10); Nanshan 25-m radio telescope), (CO)-C-12 (1-0; 1.2-m CfA telescope) and midcourse space experiment (MSX) data, and considered the impact of background components on foreground clouds. We report simultaneous 6-cm H2CO absorption lines and H110 alpha radio recombination line observations and give several large-area mappings at 4.8 GHz toward W49 (50'x50'), W3 (70'x90'), DR21/W75 (60'x90') and NGC2024/NGC2023 (50'x100') GMCs. By superimposing H2CO and (CO)-C-12 contours onto the MSX color map, we can compare correlations. The resolution for H2CO, (CO)-C-12 and MSX data was similar to 10', similar to 8' and similar to 18.3aEuro(3), respectively. Comparison of H2CO and (CO)-C-12 contours, 8.28-mu m MSX colorscale and CBT data revealed great morphological correlation in the large area, although there are some discrepancies between (CO)-C-12 and H2CO peaks in small areas. The NGC2024/NGC2023 GMC is a large area of HII regions with a high CBT, but a H2CO cloud to the north is possible against the cosmic microwave background. A statistical diagram shows that 85.21% of H2CO absorption lines are distributed in the intensity range from -1.0 to 0 Jy and the Delta V range from 1.206 to 5 km s(-1).
KeywordFormation Massive Clouds Hii Regions Imaging Individual (W49 W3 Dr21/w75 & Ngc2024/ngc2023)
SubtypeArticle
Subject Area恒星和恒星物理
DOI10.1007/s10509-011-0841-4
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordULTRACOMPACT HII-REGIONS ; DENSE MOLECULAR CLOUDS ; MASSIVE STAR-FORMATION ; ARECIBO OBSERVATIONS ; FORMING REGION ; MILKY-WAY ; CYGNUS-X ; FORMALDEHYDE ; ABSORPTION ; DISTANCE
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000299055400038
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/577
Collection射电天文研究室_恒星形成与演化研究团组
射电天文研究室
研究生学位论文
其它
Corresponding AuthorZhang, Chuan Peng
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100080, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Chuan Peng,Esimbek, Jarken,Zhou, Jian Jun,et al. Exploring morphological correlations among H2CO, (CO)-C-12, MSX and continuum mappings[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,337(1):283-302.
APA Zhang, Chuan Peng,Esimbek, Jarken,Zhou, Jian Jun,Wu, Gang,&Du, Zhi Mao.(2012).Exploring morphological correlations among H2CO, (CO)-C-12, MSX and continuum mappings.ASTROPHYSICS AND SPACE SCIENCE,337(1),283-302.
MLA Zhang, Chuan Peng,et al."Exploring morphological correlations among H2CO, (CO)-C-12, MSX and continuum mappings".ASTROPHYSICS AND SPACE SCIENCE 337.1(2012):283-302.
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