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Radio recombination line observations towards Spitzer infrared bubbles with the TianMa radio telescope
Hou, L. G.1,2; Gao, X. Y.1,2
2019-11-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume489Issue:4Pages:4862-4874
AbstractMany of the Spitzer infrared bubbles identified by theMilkyWay Project (MWP) are suggested to be H II regions in nature. More than 70 per cent of the similar to 5000 known bubbles do not have radio recombination line (RRL) observations, hence have not been confirmed as H II regions. A systematic RRL survey should be helpful to identify the nature of the bubbles. With the Shanghai TianMa 65-m radio telescope, we searched for RRLs towards 216 selected Spitzer bubbles by simultaneously observing 19 RRLs in the C band (4-8 GHz). RRLs are detected in the directions of 75 of the 216 targets. 31 of the 75 RRL sources are classified as new detections, which are possibly from new H II regions or diffuse warm ionized medium; 36 of them are probably from the outskirts of nearby bright H II regions, rather than bubble-encircled ionized gas; and the detected RRLs towards 8 bubbles are identified from known H II regions. For 58 of the 75 RRL sources, we obtained their distances after resolving the kinematic distance ambiguity by combining the results of the H2CO absorption method, the H I emission/absorption method, and the H I self-absorption method. The low detection rate of new H II regions implies that a number of MWP bubbles in the DR1 catalogue are too faint if they are H II regions.
Keywordstars: formation ISM: bubbles ISM: clouds H II regions
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
DOI10.1093/mnras/stz2466
WOS KeywordH-II-REGIONS ; STAR-FORMATION REGIONS ; GALACTIC PLANE ; DISTANCE AMBIGUITIES ; SPIRAL STRUCTURE ; DATA RELEASE ; HII-REGIONS ; RESOLUTION ; DUST ; FORMALDEHYDE
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0402701] ; National Natural Science Foundation (NNSF) of China[11503033] ; National Natural Science Foundation (NNSF) of China[U1831103] ; National Natural Science Foundation (NNSF) of China[11833009] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
Funding OrganizationNational Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation (NNSF) of China ; National Natural Science Foundation (NNSF) of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000489302400034
PublisherOXFORD UNIV PRESS
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28067
Collection中国科学院国家天文台
Corresponding AuthorHou, L. G.
Affiliation1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Hou, L. G.,Gao, X. Y.. Radio recombination line observations towards Spitzer infrared bubbles with the TianMa radio telescope[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,489(4):4862-4874.
APA Hou, L. G.,&Gao, X. Y..(2019).Radio recombination line observations towards Spitzer infrared bubbles with the TianMa radio telescope.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,489(4),4862-4874.
MLA Hou, L. G.,et al."Radio recombination line observations towards Spitzer infrared bubbles with the TianMa radio telescope".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 489.4(2019):4862-4874.
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