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Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1. / Miao, Dan; Chen, Xi; Bayandina, Olga S. et al.
In: Astronomical Journal, Vol. 167, No. 2, 63, 2024.

Research output: Contribution to journal › Article › peer-review

Harvard

Miao, D, Chen, X, Bayandina, OS, Sobolev, A, Li, W & Sugiyama, K 2024, 'Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1', Astronomical Journal, vol. 167, no. 2, 63. https://doi.org/10.3847/1538-3881/ad1599

APA

Miao, D., Chen, X., Bayandina, O. S., Sobolev, A., Li, W., & Sugiyama, K. (2024). Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1. Astronomical Journal, 167(2), [63]. https://doi.org/10.3847/1538-3881/ad1599

Vancouver

Miao D, Chen X, Bayandina OS, Sobolev A, Li W, Sugiyama K. Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1. Astronomical Journal. 2024;167(2):63. doi: 10.3847/1538-3881/ad1599

Author

Miao, Dan ; Chen, Xi ; Bayandina, Olga S. et al. / Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1. In: Astronomical Journal. 2024 ; Vol. 167, No. 2.

BibTeX

@article{b845e21a7d5544379206c474f4b6aceb,
title = "Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1",
abstract = "The high-mass young stellar object G358.93-0.03-MM1 underwent a rapid accretion burst event from 2019 January to June, resulting in flares observed in most class II methanol maser transitions starting in mid-January. In contrast, the 22.235 GHz water maser flare started in mid-April. To investigate the physical origin of this significant difference, we made the Karl G. Jansky Very Large Array observations toward the G358.93-0.03 region on 2019 March 23 and April 4 and obtained the intensity and spatial distribution images of the water maser as well as the continuum emissions at Ku and K bands on the epoch close to the water maser flare. A comparative analysis, incorporating previously reported detections in February (pre-water maser flare) and June (post-water maser flare), reveals the time lag between the accretion burst and water maser flare. These observations confirm the variations of the propagation speed of a heatwave induced by the accretion burst in different directions: the heatwave is decelerated in dense regions (e.g., the disk and jet), whereas in directions from G358-MM1 to water maser components, the heatwave speed is supposed to be close to the speed of light. Variations in flux density and spatial positions were detected for water masers and continuum emissions, indicating that the accretion burst event originating from G358-MM1 affects not only the immediate environment within a dense structure of 0.″2 (1400 au at a source distance of 6.75 kpc) around MM1 itself, but also exerts influence on broader-scale regions extending up to approximately 3″ (21,000 au). {\textcopyright} 2024. The Author(s). Published by the American Astronomical Society.",
author = "Dan Miao and Xi Chen and Bayandina, {Olga S.} and Andrej Sobolev and Wan-jun Li and Koichiro Sugiyama",
note = "This work is supported by the National Key R&D program of China (2022YFA1603102, 2022YFA1603100) and the National Natural Science Foundation of China (11873002, 12011530065, 11590781). X.C. thanks the Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019). O.B. acknowledges financial support from the Italian Ministry of University and Research—Project Proposal CIR01_00010. A.M.S. was supported by the Russian Science Foundation grant 23-12-00258.",
year = "2024",
doi = "10.3847/1538-3881/ad1599",
language = "English",
volume = "167",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "Institute of Physics Publishing (IOP)",
number = "2",

}

RIS

TY - JOUR

T1 - Large-scale Effect of an Accretion Burst in the High-Mass Young Stellar Object G358.93-0.03-MM1

AU - Miao, Dan

AU - Chen, Xi

AU - Bayandina, Olga S.

AU - Sobolev, Andrej

AU - Li, Wan-jun

AU - Sugiyama, Koichiro

N1 - This work is supported by the National Key R&D program of China (2022YFA1603102, 2022YFA1603100) and the National Natural Science Foundation of China (11873002, 12011530065, 11590781). X.C. thanks the Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019). O.B. acknowledges financial support from the Italian Ministry of University and Research—Project Proposal CIR01_00010. A.M.S. was supported by the Russian Science Foundation grant 23-12-00258.

PY - 2024

Y1 - 2024

N2 - The high-mass young stellar object G358.93-0.03-MM1 underwent a rapid accretion burst event from 2019 January to June, resulting in flares observed in most class II methanol maser transitions starting in mid-January. In contrast, the 22.235 GHz water maser flare started in mid-April. To investigate the physical origin of this significant difference, we made the Karl G. Jansky Very Large Array observations toward the G358.93-0.03 region on 2019 March 23 and April 4 and obtained the intensity and spatial distribution images of the water maser as well as the continuum emissions at Ku and K bands on the epoch close to the water maser flare. A comparative analysis, incorporating previously reported detections in February (pre-water maser flare) and June (post-water maser flare), reveals the time lag between the accretion burst and water maser flare. These observations confirm the variations of the propagation speed of a heatwave induced by the accretion burst in different directions: the heatwave is decelerated in dense regions (e.g., the disk and jet), whereas in directions from G358-MM1 to water maser components, the heatwave speed is supposed to be close to the speed of light. Variations in flux density and spatial positions were detected for water masers and continuum emissions, indicating that the accretion burst event originating from G358-MM1 affects not only the immediate environment within a dense structure of 0.″2 (1400 au at a source distance of 6.75 kpc) around MM1 itself, but also exerts influence on broader-scale regions extending up to approximately 3″ (21,000 au). © 2024. The Author(s). Published by the American Astronomical Society.

AB - The high-mass young stellar object G358.93-0.03-MM1 underwent a rapid accretion burst event from 2019 January to June, resulting in flares observed in most class II methanol maser transitions starting in mid-January. In contrast, the 22.235 GHz water maser flare started in mid-April. To investigate the physical origin of this significant difference, we made the Karl G. Jansky Very Large Array observations toward the G358.93-0.03 region on 2019 March 23 and April 4 and obtained the intensity and spatial distribution images of the water maser as well as the continuum emissions at Ku and K bands on the epoch close to the water maser flare. A comparative analysis, incorporating previously reported detections in February (pre-water maser flare) and June (post-water maser flare), reveals the time lag between the accretion burst and water maser flare. These observations confirm the variations of the propagation speed of a heatwave induced by the accretion burst in different directions: the heatwave is decelerated in dense regions (e.g., the disk and jet), whereas in directions from G358-MM1 to water maser components, the heatwave speed is supposed to be close to the speed of light. Variations in flux density and spatial positions were detected for water masers and continuum emissions, indicating that the accretion burst event originating from G358-MM1 affects not only the immediate environment within a dense structure of 0.″2 (1400 au at a source distance of 6.75 kpc) around MM1 itself, but also exerts influence on broader-scale regions extending up to approximately 3″ (21,000 au). © 2024. The Author(s). Published by the American Astronomical Society.

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UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=001142787900001

U2 - 10.3847/1538-3881/ad1599

DO - 10.3847/1538-3881/ad1599

M3 - Article

VL - 167

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

IS - 2

M1 - 63

ER -

ID: 51601722