Exploring morphological correlations among H2CO, 12CO, MSX and continuum mappings
Exploring morphological correlations among H2CO, 12CO, MSX and continuum mappings
复制标题
探索 H2CO、12CO、MSX 和连续谱映射之间的形态相关性
DOI:
10.1007/s10509-011-0841-4
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发表时间:
2011-08
期刊:
影响因子:
--
通讯作者:
Du, Zhi Mao
中科院分区:
文献类型:
--
作者:
Zhang, Chuan Peng;Esimbek, Jarken;Zhou, Jian Jun;Wu, Gang;Du, Zhi Mao
There 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 (111−110; Nanshan 25-m radio telescope), 12CO (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 H110α radio recombination line observations and give several large-area mappings at 4.8 GHz toward W49 (50′×50′), W3 (70′×90′), DR21/W75 (60′×90′) and NGC2024/NGC2023 (50′×100′) GMCs. By superimposing H2CO and 12CO contours onto the MSX color map, we can compare correlations. The resolution for H2CO, 12CO and MSX data was ∼10′, ∼8′ and ∼18.3″, respectively. Comparison of H2CO and 12CO contours, 8.28-μm MSX colorscale and CBT data revealed great morphological correlation in the large area, although there are some discrepancies between 12CO 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 ΔV range from 1.206 to 5 km s−1.
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DOI:
--
发表时间:
1987-06
期刊:
--
影响因子:
--
作者:
A. Heithausen;U. Mebold;H. W. D. Vries
通讯作者:
A. Heithausen;U. Mebold;H. W. D. Vries
DOI:
10.1111/j.1365-2966.2009.15619.x
发表时间:
2009-08
影响因子:
4.8
作者:
J. Buckle;E. Curtis;J. Roberts;G. White;G. White;J. Hatchell;C. Brunt;H. Butner;B. Cavanagh-B.-Cav
通讯作者:
J. Buckle;E. Curtis;J. Roberts;G. White;G. White;J. Hatchell;C. Brunt;H. Butner;B. Cavanagh-B.-Cav
影响因子:
4.8
作者:
P. Read
通讯作者:
P. Read
DOI:
10.1086/180368
发表时间:
1969
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Palmer;B. Zuckerman;D. Buhl;L. Snyder
通讯作者:
P. Palmer;B. Zuckerman;D. Buhl;L. Snyder
影响因子:
1.8
作者:
Gang Wu;J. Esimbek;Jianjun Zhou;X. Han
通讯作者:
Gang Wu;J. Esimbek;Jianjun Zhou;X. Han