Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111702
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSong, S. -M.en
dc.contributor.authorChen, X.en
dc.contributor.authorShen, Z. -Q.en
dc.contributor.authorLi, B.en
dc.contributor.authorYang, K.en
dc.contributor.authorOuyang, X.en
dc.contributor.authorSobolev, A. M.en
dc.contributor.authorZhao, Z.en
dc.contributor.authorLi, X. -Q.en
dc.contributor.authorCai, F.en
dc.date.accessioned2022-05-12T08:21:01Z-
dc.date.available2022-05-12T08:21:01Z-
dc.date.issued2022-
dc.identifier.citationA 12.2 GHz Methanol Maser Survey toward the 6.7 GHz Counterparts Associated with/without UC H ii Regions / S. -M. Song, X. Chen, Z. -Q. Shen et al. // Astrophysical Journal, Supplement Series. — 2022. — Vol. 258. — Iss. 1. — 19.en
dc.identifier.issn0067-0049-
dc.identifier.otherAll Open Access, Hybrid Gold3
dc.identifier.urihttp://hdl.handle.net/10995/111702-
dc.description.abstractWe report a new survey of the 12.2 GHz Class II methanol masers toward a sample of 367 sources with the 6.7 GHz methanol masers conducted with the Shanghai 65 m Tianma Radio Telescope. This sample has been previously made with observations of the radio continuum emission of UC H ii regions by the VLA. A total of 176 sources were detected with the 12.2 GHz methanol maser, with a detection rate of 48%, including 8 new detections. A lower detection rate (<10%) was determined toward the sources in the Galactic longitude ranges of 60°-180°, revealing that the physical environments from those sources in the Local arm or the tails of Galactic arms do not easily excite the 12.2 GHz masers. In addition, two detections of highly excited-state OH masers at the 13.4 GHz transition were made, one of which is a new detection. Compared to previous surveys, one-third of the detected 12.2 GHz masers show considerable flux variations, implying the possible changes of their physical environments associated with variable radiation fields from their host high-mass young stellar objects. A positive log-log correlation is found between the luminosities of the 6.7 and 12.2 GHz masers in our observed sample, suggesting that both the transition masers have similar excitation conditions. The statistical analysis for the relationships between the methanol maser luminosity and UC H ii region spatial size indicates that the maser luminosities of both the 6.7 and 12.2 GHz transitions have a decreasing trend with the spatial sizes of the associated UC H ii regions, indicating that the Class II methanol masers might fade away with the H ii region evolution. © 2022. The Author(s). Published by the American Astronomical Society.en
dc.description.sponsorshipWe are grateful for support from the operators of the TMRT during the observations. This work was supported by the National Natural Science Foundation of China (11873002, 11590781, 11903009). X.C. is grateful to the Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019). The work of A.M.S. on the relationship between methanol masers and UC H II regions in Section 4.5 was supported by the Russian Science Foundation (RSF) grant 18-12-00193-P. The other work of A.M.S. was supported by the Russian Ministry of Science and Higher Education, No. FEUZ-2020-0030.en
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.publisherAmerican Astronomical Societyen1
dc.publisherAmerican Astronomical Societyen
dc.relationinfo:eu-repo/grantAgreement/RSF//18-12-00193en
dc.rightsinfo:eu-repo/semantics/openAccessen
dc.sourceAstrophys. J. Suppl. Ser.2
dc.sourceAstrophysical Journal, Supplement Seriesen
dc.titleA 12.2 GHz Methanol Maser Survey toward the 6.7 GHz Counterparts Associated with/without UC H ii Regionsen
dc.typeArticleen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeinfo:eu-repo/semantics/publishedVersionen
dc.identifier.scopus85123741947-
local.contributor.employeeSong, S.-M., Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China, Center for Astrophysics, Guangzhou University, Guangzhou, 510006, China, University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China; Chen, X., Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China, Center for Astrophysics, Guangzhou University, Guangzhou, 510006, China; Shen, Z.-Q., Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China, University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China; Li, B., Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China, University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China; Yang, K., School of Astronomy and Space Science, Nanjing University, Jiangsu, Nanjing, 210023, China, Key Laboratory of Modern Astronomy and Astrophsics (Nanjing University), Ministry of Education, Nanjing, 210023, China; Ouyang, X., Center for Astrophysics, Guangzhou University, Guangzhou, 510006, China; Sobolev, A.M., Ural Federal University, 19 Mira Street, Ekaterinburg, 620002, Russian Federation; Zhao, Z., Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China; Li, X.-Q., Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China, University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China; Cai, F., School of Electronic Engineering, NanJing XiaoZhuang University, Nanjing, 211171, Chinaen
local.issue1-
local.volume258-
local.contributor.departmentShanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai, 200030, China; Center for Astrophysics, Guangzhou University, Guangzhou, 510006, China; University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing, 100049, China; School of Astronomy and Space Science, Nanjing University, Jiangsu, Nanjing, 210023, China; Key Laboratory of Modern Astronomy and Astrophsics (Nanjing University), Ministry of Education, Nanjing, 210023, China; Ural Federal University, 19 Mira Street, Ekaterinburg, 620002, Russian Federation; School of Electronic Engineering, NanJing XiaoZhuang University, Nanjing, 211171, Chinaen
local.identifier.pure29479355-
local.description.order19
local.identifier.eid2-s2.0-85123741947
local.fund.rsf18-12-00193-
local.fund.feuzFEUZ-2020-0030
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
2-s2.0-85123741947.pdf1,43 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.