Physical Environments of the Luminosity Outburst Source NGC 6334I Traced by Thermal and Maser Lines of Multiple Molecules
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Physical Environments of the Luminosity Outburst Source NGC 6334I Traced by Thermal and Maser Lines of Multiple Molecules
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| Автор |
Wu, J. -H.
Chen, X. Zhang, Y. -K. Ellingsen, S. P. Sobolev, A. M. Zhao, Z. Song, S. -M. Shen, Z. -Q. Li, B. Xia, B. Zhao, R. -B. Wang, J. -Q. Wu, Y. -J. |
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| Тематика |
ABEL MEAN
CESARO MEAN DIFFERENTIAL GAMES DYNAMIC PROGRAMMING PRINCIPLE ZERO-SUM GAMES |
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| Описание |
We have conducted a systematic line survey, primarily focused on transitions of the methanol and ammonia molecules, and monitoring observations of masers toward the high-mass star-forming region NGC 6334I. These observations were undertaken between 2019 and 2022 in the C, K, Ka, and Q bands with the Tianma Radio Telescope. In total, 63 CH3OH (including 11 class I and nine class II maser or maser candidate), 18 13CH3OH, and 34 NH3 (including seven maser or maser candidate) transitions were detected. The emission is likely associated with the luminosity outburst source MM1. Rotation diagram analysis of multiple ammonia transitions shows that the gas temperature in the molecular core was a factor of 2 higher than that measured in previous observations in the pre-burst stage. This suggests that the molecular core has likely been heated by radiation originating from the luminosity outburst. Maser variability in the methanol and excited-state OH masers shows a general trend that the maser components associated with the luminosity outburst have decreased in their intensity since 2020. The decay in the maser luminosity indicates that the outburst is possibly declining, and as a result, the duration of the MM1 luminosity outburst may be shorter than the predicted 40 yr duration. Compared to the masers detected toward another luminosity outburst source, G358.93-0.03, abundant class I methanol masers and strong water maser flares were also detected toward NGC 633I, but masers from rare class II methanol transitions and new molecules were absent toward NGC 6334I. The large number of detections of maser transitions toward the two burst sources provided a database for further maser modeling to explore the physical environments associated with accretion burst events. © 2023. The Author(s). Published by the American Astronomical Society.
National Natural Science Foundation of China, NSFC: 11590781, 11873002, 12011530065; Ministry of Education and Science of the Russian Federation, Minobrnauka: FEUZ-2023-0019; National Key Research and Development Program of China, NKRDPC: 2022YFA1603102 This work is supported by the National Key R&D program of China (2022YFA1603102), the National Natural Science Foundation of China (11873002, 12011530065, 11590781). X.C. thanks Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019). This work is also supported by the Great Bay Center, National Astronomical Data Center. A.M.S. was supported by the Ministry of Science and Higher Education of the Russian Federation (state contract FEUZ-2023-0019). |
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| Дата |
2024-04-05T16:19:13Z
2024-04-05T16:19:13Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
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| Идентификатор |
Wu, J, Chen, X, Zhang, Y, Ellingsen, SP, Sobolev, AM, Zhao, Z, Song, S, Shen, Z, Li, B, Xia, B, Zhao, R, Wang, J & Wu, Y 2023, 'Physical Environments of the Luminosity Outburst Source NGC 6334I Traced by Thermal and Maser Lines of Multiple Molecules ', Astrophysical Journal, Supplement Series, Том. 265, № 2, 49. https://doi.org/10.3847/1538-4365/acbd46
Wu, J., Chen, X., Zhang, Y., Ellingsen, S. P., Sobolev, A. M., Zhao, Z., Song, S., Shen, Z., Li, B., Xia, B., Zhao, R., Wang, J., & Wu, Y. (2023). Physical Environments of the Luminosity Outburst Source NGC 6334I Traced by Thermal and Maser Lines of Multiple Molecules . Astrophysical Journal, Supplement Series, 265(2), [49]. https://doi.org/10.3847/1538-4365/acbd46 0067-0049 Final All Open Access, Gold https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152358424&doi=10.3847%2f1538-4365%2facbd46&partnerID=40&md5=50c981cad2913669563efef25932b75c https://iopscience.iop.org/article/10.3847/1538-4365/acbd46/pdf http://elar.urfu.ru/handle/10995/130380 10.3847/1538-4365/acbd46 85152358424 000963024400001 |
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en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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application/pdf
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| Издатель |
American Astronomical Society
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| Источник |
The Astrophysical Journal Supplement Series
Astrophysical Journal, Supplement Series |
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