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6.7 GHz methanol maser survey toward GLIMPSE point sources and BGPS 1.1 mm dust clumps
Sun, Yan1,2,3; Xu, Ye1; Chen, Xi4; Zhang, Bo4,5; Wu, Yuan-Wei1,5; Henkel, Christian5,6; Brunthaler, Andreas5; Choi, Yoon Kyung5; Zheng, Xing-Wu7
2014-03-01
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume563Issue:0Pages:0
AbstractWe present the results of a 6.7 GHz methanol maser survey from the Effelsberg 100 m radio telescope. A sample of 404 sources from the Bolocam Galactic Plane Survey (BGPS) 1.1 mm dust clump survey that met specific Galactic Legacy Infrared Mid-Plane Survey Extraodinaire (GLIMPSE) point-source color criteria was selected and 318 of these were observed. The new observations resulted in the detection of 29 methanol masers, including 12 new ones. Together with the additional 74 detections from the literature, this means that a total of 103 methanol masers are coincident with 1.1 mm dust clumps, yielding an overall detection rate of 26%. A comparison of the properties of a 1.1 mm dust clump and a 6.7 GHz methanol maser indicates that methanol masers with a higher flux density and/or luminosity are generally associated with more massive but less dense 1.1 mm dust clumps. The overall detection rate of 26% appears to vary as a function of the derived H-2 column density of the associated 1.1 mm dust clump. The methanol masers were primarily detected toward the brighter and more massive 1.1 mm dust clumps. A subsample of 194 sources that overlapped sources with observations of the 95 GHz methanol line was investigated in more detail for the properties of 1.1 mm dust clumps. The statistical analysis reveals that 1.1 mm dust clumps with both class I and II counterparts have much higher mean and median values of mass, column density, and flux density than those with only class I or II counterparts. Based on our much larger sample, we slightly revise the boundary defined previously for selecting BGPS sources associated with a class II methanol maser, wherein similar to 80% of expected class II methanol masers will be detected with a detection rate in the range of 40-50%.
KeywordMasers Stars: Formation Ism: Molecules Radio Lines: Ism Infrared: Ism
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1051/0004-6361/201323047
WOS KeywordEXTENDED GREEN OBJECTS ; GALACTIC PLANE SURVEY ; STAR-FORMING REGIONS ; CLASS-I ; CATALOG ; SAMPLE ; SEARCH ; EGOS ; MORPHOLOGIES ; CANDIDATES
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Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000333798000130
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10719
Collection紫金山天文台青海观测站
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
5.Max Planck Inst Radioastron, D-53121 Bonn, Germany
6.King Abdulaziz Univ, Fac Sci, Dept Astron, Jeddah 21589, Saudi Arabia
7.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Sun, Yan,Xu, Ye,Chen, Xi,et al. 6.7 GHz methanol maser survey toward GLIMPSE point sources and BGPS 1.1 mm dust clumps[J]. ASTRONOMY & ASTROPHYSICS,2014,563(0):0.
APA Sun, Yan.,Xu, Ye.,Chen, Xi.,Zhang, Bo.,Wu, Yuan-Wei.,...&Zheng, Xing-Wu.(2014).6.7 GHz methanol maser survey toward GLIMPSE point sources and BGPS 1.1 mm dust clumps.ASTRONOMY & ASTROPHYSICS,563(0),0.
MLA Sun, Yan,et al."6.7 GHz methanol maser survey toward GLIMPSE point sources and BGPS 1.1 mm dust clumps".ASTRONOMY & ASTROPHYSICS 563.0(2014):0.
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