A 95 GHz methanol emission survey toward eight small supernova remnants
We report on a 95 GHz(80-71A+) methanol(CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants(SNRs) with angular size〈10′ were observed, but emission was only detected in three SNRs near the Galactic center(Sgr A East,G 0.1–0.1 and G 359.92–0...
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Published in | Research in astronomy and astrophysics Vol. 17; no. 12; pp. 65 - 76 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
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Beijing
National Astronomical Observatories, CAS and IOP Publishing Ltd
01.12.2017
IOP Publishing |
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Online Access | Get full text |
ISSN | 1674-4527 2397-6209 |
DOI | 10.1088/1674-4527/17/12/125 |
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Abstract | We report on a 95 GHz(80-71A+) methanol(CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants(SNRs) with angular size〈10′ were observed, but emission was only detected in three SNRs near the Galactic center(Sgr A East,G 0.1–0.1 and G 359.92–0.09). CH3OH emission mainly surrounds the SNRs and can be decomposed into nine spatial peaks with the velocity range of eight peaks being(-30, 70) km s-1, and the other is(70, 120) km s-1. They are probably excited by interaction with these SNRs and adjacent molecular gas in the central molecular zone(CMZ), although star formation may play an important role in exciting CH3OH emission in some regions of CMZ. We infer that tidal action is unlikely to be an excitation source for CH3OH emission. |
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AbstractList | We report on a 95 GHz ( 8 0 − 7 1 A+) methanol (CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants (SNRs) with angular size ≲ 10 ′ were observed, but emission was only detected in three SNRs near the Galactic center (Sgr A East, G 0.1-0.1 and G 359.92-0.09). CH3OH emission mainly surrounds the SNRs and can be decomposed into nine spatial peaks with the velocity range of eight peaks being (−30, 70) km s−1, and the other is (70, 120) km s−1. They are probably excited by interaction with these SNRs and adjacent molecular gas in the central molecular zone (CMZ), although star formation may play an important role in exciting CH3OH emission in some regions of CMZ. We infer that tidal action is unlikely to be an excitation source for CH3OH emission. We report on a 95 GHz (\({8}_{0}-{7}_{1}\) A+) methanol (CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants (SNRs) with angular size \(\lesssim {10}^{^{\prime} }\) were observed, but emission was only detected in three SNRs near the Galactic center (Sgr A East, G 0.1–0.1 and G 359.92–0.09). CH3OH emission mainly surrounds the SNRs and can be decomposed into nine spatial peaks with the velocity range of eight peaks being (−30, 70) km s−1, and the other is (70, 120) km s−1. They are probably excited by interaction with these SNRs and adjacent molecular gas in the central molecular zone (CMZ), although star formation may play an important role in exciting CH3OH emission in some regions of CMZ. We infer that tidal action is unlikely to be an excitation source for CH3OH emission. We report on a 95 GHz(80-71A+) methanol(CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants(SNRs) with angular size〈10′ were observed, but emission was only detected in three SNRs near the Galactic center(Sgr A East,G 0.1–0.1 and G 359.92–0.09). CH3OH emission mainly surrounds the SNRs and can be decomposed into nine spatial peaks with the velocity range of eight peaks being(-30, 70) km s-1, and the other is(70, 120) km s-1. They are probably excited by interaction with these SNRs and adjacent molecular gas in the central molecular zone(CMZ), although star formation may play an important role in exciting CH3OH emission in some regions of CMZ. We infer that tidal action is unlikely to be an excitation source for CH3OH emission. |
Author | Ying-Jie Li;Ye Xu;Xi Chen;Deng-Rong Lu;Yan Sun;Xin-Yu Du;Zhi-Qiang Shen |
AuthorAffiliation | Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China;University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China;Center for Astrophysics, Guangzhou University, Guangzhou 51006, China;Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;University of the Chinese Academy of Sciences, Beijing 100049, China |
Author_xml | – sequence: 1 givenname: Ying-Jie surname: Li fullname: Li, Ying-Jie email: liyj@pmo.ac.cn organization: University of Science and Technology of China, Chinese Academy of Sciences , China – sequence: 2 givenname: Ye surname: Xu fullname: Xu, Ye email: xuye@pmo.ac.cn organization: Purple Mountain Observatory, Chinese Academy of Sciences , China – sequence: 3 givenname: Xi surname: Chen fullname: Chen, Xi email: chenxi@shao.ac.cn organization: Shanghai Astronomical Observatory, Chinese Academy of Sciences , China – sequence: 4 givenname: Deng-Rong surname: Lu fullname: Lu, Deng-Rong organization: Purple Mountain Observatory, Chinese Academy of Sciences , China – sequence: 5 givenname: Yan surname: Sun fullname: Sun, Yan organization: Purple Mountain Observatory, Chinese Academy of Sciences , China – sequence: 6 givenname: Xin-Yu surname: Du fullname: Du, Xin-Yu organization: University of the Chinese Academy of Sciences , China – sequence: 7 givenname: Zhi-Qiang surname: Shen fullname: Shen, Zhi-Qiang organization: Shanghai Astronomical Observatory, Chinese Academy of Sciences , China |
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Notes | 11-5721/P ISM:molecules;ISM:supernova remnants;Galaxy:center;ISM:kinematics and dynamics;ISM:clouds We report on a 95 GHz(80-71A+) methanol(CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants(SNRs) with angular size〈10′ were observed, but emission was only detected in three SNRs near the Galactic center(Sgr A East,G 0.1–0.1 and G 359.92–0.09). CH3OH emission mainly surrounds the SNRs and can be decomposed into nine spatial peaks with the velocity range of eight peaks being(-30, 70) km s-1, and the other is(70, 120) km s-1. They are probably excited by interaction with these SNRs and adjacent molecular gas in the central molecular zone(CMZ), although star formation may play an important role in exciting CH3OH emission in some regions of CMZ. We infer that tidal action is unlikely to be an excitation source for CH3OH emission. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 |
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Snippet | We report on a 95 GHz(80-71A+) methanol(CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants(SNRs)... We report on a 95 GHz ( 8 0 − 7 1 A+) methanol (CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova remnants... We report on a 95 GHz (\({8}_{0}-{7}_{1}\) A+) methanol (CH3OH) emission survey with the Purple Mountain Observatory Delingha 13.7 m telescope. Eight supernova... |
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SubjectTerms | Emission Galaxy: center ISM: clouds ISM: kinematics and dynamics ISM: molecules ISM: supernova remnants Methanol Molecular gases Mountains Polls & surveys Star & galaxy formation Star formation Supernova Supernova remnants |
Title | A 95 GHz methanol emission survey toward eight small supernova remnants |
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