NAOC Open IR
(CH3OH)-C-13 Masers Associated With a Transient Phenomenon in a High-mass Young Stellar Object
Chen, Xi1,2; Sobolev, Andrej M.3; Breen, Shari L.4; Shen, Zhi-Qiang2; Ellingsen, Simon P.5; MacLeod, Gordon C.6,7; Li, Bin2; Voronkov, Maxim A.8; Kaczmarek, Jane F.8,9; Zhang, Jiangshui1; Ren, Zhi-Yuan10; Wang, Jin1; Linz, Hendrik11; Hunter, Todd R.12; Brogan, Crystal12; Sugiyama, Koichiro13; Burns, Ross A.13,14; Menten, Karl15; Sanna, Alberto15; Stecklum, Bringfried16; Hirota, Tomoya13,17; Kim, Kee-Tae14; Chibueze, James18,19; van den Heever, S. P.6
2020-02-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume890Issue:2Pages:8
AbstractWe report the first detection of isotopic methanol ((CH3OH)-C-13) maser emission in interstellar space. The emission was detected toward the high-mass young stellar object G358.93-0.03 during monitoring of a flare in the 6.7 GHz methanol (CH3OH) maser emission in this source. We find that the spectral and spatial distribution of the (CH3OH)-C-13 masers differs from the CH3OH masers imaged at the same epoch, contrary to expectations from similarity of their pumping. This conclusively demonstrates that isotopic methanol masers are bright under different physical conditions and suggests that they can provide additional, complementary information to the CH3OH masers from the same source. We detect a rapid decay of the (CH3OH)-C-13 maser lines suggesting that they are transient phenomena (masing for only a few months), likely associated with rapid changes in radiation field due to an accretion burst induced by massive disk fragmentation. Changes in the line flux density are faster than required to achieve equilibrium in the energy level populations, indicating that the pumping of these masers is likely variable.
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project
DOI10.3847/2041-8213/ab72a5
WOS KeywordII METHANOL MASERS ; MOLECULAR-SPECTROSCOPY ; COLOGNE DATABASE ; TRANSITIONS ; BURST
Language英语
Funding ProjectNational Natural Science Foundation of China[11590781] ; National Natural Science Foundation of China[11873002] ; National Natural Science Foundation of China[11590780] ; National Natural Science Foundation of China[11590784] ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning[2017KZDXM062] ; Russian Science Foundation[18-12-00193] ; ARC Discovery Project[DP180101061]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019) ; major scientific research project of Guangdong regular institutions of higher learning ; major scientific research project of Guangdong regular institutions of higher learning ; Russian Science Foundation ; Russian Science Foundation ; ARC Discovery Project ; ARC Discovery Project
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000537509500001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/83372
Collection中国科学院国家天文台
Corresponding AuthorChen, Xi
Affiliation1.Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
3.Ural Fed Univ, 19 Mira St, Ekaterinburg 620002, Russia
4.Univ Sydney, Sch Phys, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia
5.Univ Tasmania, Sch Nat Sci, Private Bag 37, Hobart, Tas 7001, Australia
6.Hartebeesthoek Radio Astron Observ, POB 443, ZA-1741 Krugersdorp, South Africa
7.Univ Western Ontario, 1151 Richmond Street, London, ON N6A 3K7, Canada
8.Australia Telescope Natl Facil, CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia
9.CSIRO Parkes Observ, CSIRO Astron & Space Sci, POB 276, Parkes, NSW 2870, Australia
10.Chinese Acad Sci, Natl Astron Observ, Datun Rd A20, Beijing, Peoples R China
11.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
12.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA
13.Natl Astron Observ Japan NAOJ, Mizusawa VLBI Observ, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
14.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea
15.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
16.Thuringer Landessternwarte, Sternwarte 5, D-07778 Tautenburg, Germany
17.SOKENDAI Grad Univ Adv Studies, Dept Astron Sci, Osawa 2-21-1, Mitaka, Tokyo 1818588, Japan
18.North West Univ, Phys Dept, Space Res Unit, ZA-2520 Potchefstroom, South Africa
19.Univ Nigeria, Fac Phys Sci, Dept Phys & Astron, Carver Bldg,1 Univ Rd, Nsukka, Nigeria
Recommended Citation
GB/T 7714
Chen, Xi,Sobolev, Andrej M.,Breen, Shari L.,et al. (CH3OH)-C-13 Masers Associated With a Transient Phenomenon in a High-mass Young Stellar Object[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,890(2):8.
APA Chen, Xi.,Sobolev, Andrej M..,Breen, Shari L..,Shen, Zhi-Qiang.,Ellingsen, Simon P..,...&van den Heever, S. P..(2020).(CH3OH)-C-13 Masers Associated With a Transient Phenomenon in a High-mass Young Stellar Object.ASTROPHYSICAL JOURNAL LETTERS,890(2),8.
MLA Chen, Xi,et al."(CH3OH)-C-13 Masers Associated With a Transient Phenomenon in a High-mass Young Stellar Object".ASTROPHYSICAL JOURNAL LETTERS 890.2(2020):8.
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