A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar
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| Автор |
Burns, R. A.
Uno, Y. Sakai, N. Blanchard, J. Rosli, Z. Orosz, G. Yonekura, Y. Tanabe, Y. Sugiyama, K. Hirota, T. Kim, K. -T. Aberfelds, A. Volvach, A. E. Bartkiewicz, A. Caratti, o, Garatti, A. Sobolev, A. M. Stecklum, B. Brogan, C. Phillips, C. Ladeyschikov, D. A. Johnstone, D. Surcis, G. MacLeod, G. C. Linz, H. Chibueze, J. O. Brand, J. Eislöffel, J. Hyland, L. Uscanga, L. Olech, M. Durjasz, M. Bayandina, O. Breen, S. Ellingsen, S. P. van, den, Heever, S. P. Hunter, T. R. Chen, X. |
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| Описание |
High-mass protostars (M⋆ > 8M⊙) are thought to gain the majority of their mass via short, intense bursts of growth. This episodic accretion is thought to be facilitated by gravitationally unstable and subsequently inhomogeneous accretion disks. Limitations of observational capabilities, paired with a lack of observed accretion burst events, have withheld affirmative confirmation of the association between disk accretion, instability and the accretion burst phenomenon in high-mass protostars. Following its 2019 accretion burst, a heatwave driven by a burst of radiation propagated outward from the high-mass protostar G358.93-0.03-MM1. Six very long baseline interferometry observations of the radiatively pumped 6.7 GHz methanol maser were conducted during this period, tracing ever increasing disk radii as the heatwave propagated outward. Concatenating the very long baseline interferometry maps provided a sparsely sampled, milliarcsecond view of the spatio-kinematics of the accretion disk covering a physical range of ~50–900 AU. We term this observational approach ‘heatwave mapping’. We report the discovery of a Keplerian accretion disk with a spatially resolved four-arm spiral pattern around G358.93-0.03-MM1. This result positively implicates disk accretion and spiral arm instabilities into the episodic accretion high-mass star formation paradigm. © 2023, The Author(s), under exclusive licence to Springer Nature Limited.
2021/WK/02, 28/530020/SPUB/SP/2022; Natural Sciences and Engineering Research Council of Canada, NSERC; Japan Society for the Promotion of Science, KAKEN: 17K05398, 18H05222, 20H05845, 21H00032, 21H01120; Ministry of Education, Culture, Sports, Science and Technology, MEXT; Ministero dell’Istruzione, dell’Università e della Ricerca, MIUR: CIR01_00010; Ministry of Education and Science of the Russian Federation, Minobrnauka: FEUZ-2023-0019; Narodowym Centrum Nauki, NCN: 2021/43/B/ST9/02008; Universidad de Guanajuato, UG: CIIC 164/2022; East Asian Core Observatories Association, EACOA R.A.B. acknowledges support through the EACOA Fellowship from the East Asian Core Observatories Association. R.A.B., J.O.C. and G.C.M. acknowledge the Global Emerging Radio Astronomy Foundation for contributions to radio astronomy. T.H. is financially supported by the MEXT/JSPS KAKENHI Grant nos. 17K05398, 18H05222 and 20H05845. Y.Y. is financially supported by the MEXT/JSPS KAKANHI Grant nos. 21H01120 and 21H00032. L.U. acknowledges support from the University of Guanajuato (Mexico) Grant ID CIIC 164/2022. A.C.o.G. acknowledges support by PRIN-INAF-MAIN-STREAM 2017. M.O. thanks the Ministry of Education and Science of the Republic of Poland for support and granting funds for the Polish contribution to the International LOFAR Telescope (arrangement no. 2021/WK/02) and for maintenance of the LOFAR PL-612 Baldy (MSHE decision no. 28/530020/SPUB/SP/2022). A.B. and M.D. acknowledge support from the National Science Centre, Poland through Grant 2021/43/B/ST9/02008. O.B. acknowledges financial support from the Italian Ministry of University and Research – Project Proposal CIR01_00010. A.M.S. and D.A.L. were supported by the Ministry of Science and Higher Education of the Russian Federation (state contract FEUZ-2023-0019). D.J. is supported by NRC Canada and by an NSERC Discovery Grant. |
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| Дата |
2024-04-05T16:16:14Z
2024-04-05T16:16:14Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) |info:eu-repo/semantics/publishedVersion |
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| Идентификатор |
Burns, RA, Uno, Y, Sakai, N, Blanchard, J, Rosli, Z, Orosz, G, Yonekura, Y, Tanabe, Y, Sugiyama, K, Hirota, T, Kim, K-T, Aberfelds, A, Volvach, AE, Bartkiewicz, A, Caratti o garatti, A, Sobolev, AM, Stecklum, B, Brogan, C, Phillips, C, Ladeyschikov, DA, Johnstone, D, Surcis, G, Macleod, GC, Linz, H, Chibueze, JO, Brand, J, Eislöffel, J, Hyland, L, Uscanga, L, Olech, M, Durjasz, M, Bayandina, O, Breen, S, Ellingsen, SP, Van den heever, SP, Hunter, TR & Chen, X 2023, 'A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar', Nature Astronomy, Том. 7, № 5, стр. 557-568. https://doi.org/10.1038/s41550-023-01899-w
Burns, R. A., Uno, Y., Sakai, N., Blanchard, J., Rosli, Z., Orosz, G., Yonekura, Y., Tanabe, Y., Sugiyama, K., Hirota, T., Kim, K-T., Aberfelds, A., Volvach, A. E., Bartkiewicz, A., Caratti o garatti, A., Sobolev, A. M., Stecklum, B., Brogan, C., Phillips, C., ... Chen, X. (2023). A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar. Nature Astronomy, 7(5), 557-568. https://doi.org/10.1038/s41550-023-01899-w 2397-3366 Final All Open Access, Green https://www.scopus.com/inward/record.uri?eid=2-s2.0-85148934661&doi=10.1038%2fs41550-023-01899-w&partnerID=40&md5=f2f8e46eb3779d0f2f2da1c053c1e203 https://zenodo.org/record/8279005/files/Burns.pdf http://elar.urfu.ru/handle/10995/130228 10.1038/s41550-023-01899-w 85148934661 000943209900001 |
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| Язык |
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 |
Nature Research
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| Источник |
Nature Astronomy
Nature Astronomy |
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