The comparison between H2CO and OH in the Milky Way

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 恒星形成与演化研究团组

	The comparison between H2CO and OH in the Milky Way
	Guo, Wei Hua1,2 ; Esimbek, Jarken1,3 ; Tang, Xin Di1,3,4 ; Zhou, Jian Jun1,3 ; Baan, Willem A.5; Yuan, Ye1,3 ; Wu, Gang1,3 ; Zhang, Yan Jun1,2 ; Komesh, Toktarkhan 6
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2016-08-01
卷号	361 期号:8
关键词	Molecular clouds: ISM Molecule: maser Formation
ISSN号	0004-640X
英文摘要	A catalog of 4231 Galactic H2CO absorption lines (similar to 2241 sources) at 6 cm has been collected from the literature published up to 2014. The distribution of these H2CO absorption lines has been compared with the OH masers at 18 cm in the Milky Way. Most of the OH masers are distributed in the inner Galaxy (-75 degrees < l < 75 degrees) with a higher Galactic latitude than the H2CO sources (-5 degrees < b < 5 degrees). The longitude-velocity distributions of H2CO and OH show that the majority of the objects are located in the molecular ring following the CO molecular gas distribution. The range of velocities of the OH masers is larger and distribution more diffuse than the H2CO sources in the Galactic longitude range 30 degrees < l < 90 degrees. The H2CO sources have been matched with the four ground state transitions of OH and a close associations have been found with H2CO clouds with small velocity differences (< 5 km s(-1)). The H2CO sources observed with a higher resolution telescope have a better correlation with the OH maser, which may imply a common excitation process and may be attributed to shock excitation. The correlation index of the 1720 MHz OH for the relations LOH-L-H2CO(alpha) and LOH-L-IR(alpha) is much weaker as compared with 1612, 1665, and 1667 MHz OH transitions. The correlation between H2CO and the interstellar OH maser is much stronger than between H2CO and the stellar OH maser. Similarly the correlation is stronger for the presence than for the absence of far-infrared radiation ( FIR) sources. This may indicate that both the FIR and the radio continuum connects the OH with H2CO characteristics.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	H-II REGIONS ; 6-CENTIMETER FORMALDEHYDE ABSORPTION ; MASSIVE STAR-FORMATION ; DARK DUST CLOUDS ; 6 CM H2CO ; MOLECULAR CLOUDS ; INTERSTELLAR FORMALDEHYDE ; GALACTIC-CENTER ; RECOMBINATION LINES ; FORMING REGIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000381114700019
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/1405]
专题	恒星形成与演化研究团组新疆天文台_射电天文研究室
作者单位	1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 4.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 5.Netherlands Inst Radio Astron, NL-7991 PD Dwingeloo, Netherlands 6.Al Farabi Kazakh Natl Univ, Dept Solid State Phys & Nonlinear Phys, Fac Phys & Technol, Alma Ata 050040, Kazakhstan
推荐引用方式 GB/T 7714	Guo, Wei Hua,Esimbek, Jarken,Tang, Xin Di,et al. The comparison between H2CO and OH in the Milky Way[J]. ASTROPHYSICS AND SPACE SCIENCE,2016,361(8).
APA	Guo, Wei Hua.,Esimbek, Jarken.,Tang, Xin Di.,Zhou, Jian Jun.,Baan, Willem A..,...&Komesh, Toktarkhan.(2016).The comparison between H2CO and OH in the Milky Way.ASTROPHYSICS AND SPACE SCIENCE,361(8).
MLA	Guo, Wei Hua,et al."The comparison between H2CO and OH in the Milky Way".ASTROPHYSICS AND SPACE SCIENCE 361.8(2016).