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H2CO and H110 alpha Observations toward the Aquila Molecular Cloud

文献类型：期刊论文

作者Esimbek, Jarken1,4; Wu, Gang1,4; Komesh, Toktarkhan1,2,3; He, Yuxin1,4; Sailanbek, Serikbek1,2,3; Tang, Xindi1,4; Manapbayeva, Arailym1,2; Li, Dalei1,4; Zhou, Jianjun1,4; Baan, Willem1,5
刊名ASTROPHYSICAL JOURNAL
出版日期2019-04-01
卷号874期号:2页码:10
关键词ISM: molecules stars: formation
ISSN号0004-637X
DOI10.3847/1538-4357/ab0ae3
通讯作者Komesh, Toktarkhan(toktarhan@xao.ac.cn)
英文摘要The formaldehyde H2CO(1(10) -1(11) ) absorption line and H110 alpha radio recombination line have been observed toward the Aquila Molecular Cloud using the Nanshan 25 m telescope operated by the Xinjiang Astronomical Observatory CAS. These first observations of the H2CO (1(10) -1(11) ) absorption line determine the extent of the molecular regions that are affected by the ongoing star formation in the Aquila molecular complex and show some of the dynamic properties. The distribution of the excitation temperature T-ex for H2CO identifies the two known star formation regions W40 and Serpens South as well as a smaller new region Serpens 3. The intensity and velocity distributions of H2CO and (CO)-C-13(1-0) do not agree well with each other, which confirms that the H2CO absorption structure is mostly determined by the excitation of the molecules resulting from the star formation rather than by the availability of molecular material as represented by the distribution. Some velocity-coherent linear (CO)-C-13(1-0) structures have been identified in velocity channel maps of H2CO and it is found that the three star formation regions lie on the intersect points of filaments. The H110 alpha emission is found only at the location of the W40 H II region and spectral profile indicates a redshifted spherical outflow structure in the outskirts of the H II region. Sensitive mapping of H2CO absorption of the Aquila Complex has correctly identified the locations of star formation activity in complex molecular clouds and the spectral profiles reveal the dominant velocity components and may identify the presence of outflows.
WOS关键词DARK ; EXCITATION
资助项目CAS-TWAS President's Fellowship for International Doctoral Students ; National Natural Science foundation of China[11433008] ; National Natural Science foundation of China[11703074] ; National Natural Science foundation of China[11703073] ; National Natural Science foundation of China[11603063] ; Program of the Light in China's Western Region (LCRW)[2016-QNXZ-B-22] ; Program of the Light in China's Western Region (LCRW)[2016-QNXZ-B-23] ; Program of the Light in China's Western Region (LCRW)[2018-XBQNXZ-B-024] ; Chinese Academy of Sciences President's International Fellowship Initiative[2019VMA0040]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000463537200010
出版者IOP PUBLISHING LTD
资助机构CAS-TWAS President's Fellowship for International Doctoral Students ; National Natural Science foundation of China ; Program of the Light in China's Western Region (LCRW) ; Chinese Academy of Sciences President's International Fellowship Initiative
源URL[http://ir.xao.ac.cn/handle/45760611-7/2597]  
专题恒星形成与演化研究团组
射电天文研究室_利用南山26米射电望远镜观测数据的文章
通讯作者Komesh, Toktarkhan
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
2.Al Farabi Kazakh Natl Univ, Fac Phys & Technol, Dept Solid State Phys & Nonlinear Phys, Alma Ata 050040, Kazakhstan
3.Univ Chinese Acad Sci, Beijing 100080, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China
5.ASTRON, Netherlands Inst Radio Astron, NL-7991 PD Dwingeloo, Netherlands
推荐引用方式
GB/T 7714		 Esimbek, Jarken,Wu, Gang,Komesh, Toktarkhan,et al. H2CO and H110 alpha Observations toward the Aquila Molecular Cloud[J]. ASTROPHYSICAL JOURNAL,2019,874(2):10.
APA Esimbek, Jarken.,Wu, Gang.,Komesh, Toktarkhan.,He, Yuxin.,Sailanbek, Serikbek.,...&Baan, Willem.(2019).H2CO and H110 alpha Observations toward the Aquila Molecular Cloud.ASTROPHYSICAL JOURNAL,874(2),10.
MLA Esimbek, Jarken,et al."H2CO and H110 alpha Observations toward the Aquila Molecular Cloud".ASTROPHYSICAL JOURNAL 874.2(2019):10.

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