Institutional Repository of Radio Astronomy Research Laboratory
| Infall Motions in the Hot Core Associated with the Hypercompact H | |
Komesh, Toktarkhan1,2; Garay, Guido3; Henkel, Christian4,5,6; Omar, Aruzhan2,7; Estalella, Robert8; Assembay, Zhandos2,7; Li, Dalei5 ; Guzman, Andres9; Esimbek, Jarken5; Huang, Jiasheng10; He, Yuxin5; Alimgazinova, Nazgul1,2,7; Kyzgarina, Meiramgul1,2,7; Bekdaulet, Shukirgaliyev1,11,12,13; Zhumabay, Nurman1,2,14; Manapbayeva, Arailym2,7
| |
| 2024-05-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL
 |
| ISSN | 0004-637X |
| Volume | 967Issue:1Pages:15 |
| Contribution Rank | 5 |
| Abstract | e report high angular resolution observations, made with the Atacama Large Millimeter Array in band 6, of high excitation molecular lines of CH3CN and SO2 and of the H29 alpha radio recombination line toward the G345.0061+01.794 B HC H ii region in order to investigate the physical and kinematical characteristics of its surroundings. Emission was detected in all observed components of the J = 14 -> 13 rotational ladder of CH3CN and in the 30(4,26)-30(3,27), and 32(4,28)-32(3,29) lines of SO2. The peak of the velocity-integrated molecular emission is located similar to 04 northwest of the peak of the continuum emission. The first-order moment images and channel maps show a velocity gradient of 1.1 km s(-1) arcsec(-1) across the source and a distinctive spot of blueshifted emission toward the peak of the zero-order moment. The rotational temperature is found to decrease from 252 +/- 24 K at the peak position to 166 +/- 16 K at its edge, indicating that our molecular observations are probing a hot molecular core that is internally excited. The emission in the H29 alpha line arises from a region of 065 in size, where its peak coincides with that of the dust continuum. We model the kinematical characteristics of the "central blue spot" feature as due to infalling motions, suggesting a central mass of 172.8 +/- 8.8 M-circle dot. Our observations indicate that this HC H ii region is surrounded by a compact structure of hot molecular gas, which is rotating and infalling toward a central mass, that is most likely confining the ionized region. The observed scenario is reminiscent of a "butterfly pattern" with an approximately edge-on torus and ionized gas roughly parallel to its rotation axis. |
| DOI | 10.3847/1538-4357/ad3e7b |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | MASSIVE STARS ; ACCRETION ; DISK ; RADIATION ; SIGNATURES ; CONTINUUM ; PACKAGE ; ASTROPY ; DUST |
| Funding Project | Ministry of Education and Science of the Republic of Kazakhstan (Ministry of Education and Science, Republic of Kazakhstan)https://doi.org/10.13039/501100004561[AP13067768] ; Ministry of Education and Science of the Republic of Kazakhstan (Ministry of Education and Science, Republic of Kazakhstan)https://doi.org/10.13039/501100004561[AP14870504] ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan ; Chinese Academy of Sciences (CAS)[FB210003] ; Chinese Academy of Sciences (CAS)[PID2020-117710GB-I00] ; Chinese Academy of Sciences (CAS)[CEX2019-000918-M] ; CAS South America Center for Astronomy (CASSACA) in Santiago, Chile ; MCIN/ AEI[2022YFA1603103] ; National Key R&D Program of China[2022E01050] ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region[12173075] ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association CAS[2020-XBQNXZ-017] ; CAS Light of West China Program[2023D04033] ; Xinjiang Key Laboratory of Radio Astrophysics[2015.1.01371] ; ALMA |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001220820500001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | Ministry of Education and Science of the Republic of Kazakhstan (Ministry of Education and Science, Republic of Kazakhstan)https://doi.org/10.13039/501100004561 ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan ; Chinese Academy of Sciences (CAS) ; CAS South America Center for Astronomy (CASSACA) in Santiago, Chile ; MCIN/ AEI ; National Key R&D Program of China ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association CAS ; CAS Light of West China Program ; Xinjiang Key Laboratory of Radio Astrophysics ; ALMA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6727 |
| Collection | 射电天文研究室_恒星形成与演化研究团组 |
| Corresponding Author | Komesh, Toktarkhan |
| Affiliation | 1.Nazarbayev Univ, Energet Cosmos Lab, Astana 010000, Kazakhstan 2.Al Farabi Kazakh Natl Univ, Inst Expt & Theoret Phys, Alma Ata 050040, Kazakhstan 3.Univ Chile, Dept Astron, Camino Observ 1515, Santiago, Chile 4.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 6.King Abdulaziz Univ, Astron Dept, POB 80203, Jeddah 21589, Saudi Arabia 7.Al Farabi Kazakh Natl Univ, Fac Phys & Technol, Alma Ata 050040, Kazakhstan 8.Univ Barcelona, Inst Ciencies Cosmos, Dept Fis Quant & Astrofis, IEEC UB, Marti I Franques 1, Barcelona 08028, Spain 9.Natl Inst Nat Sci, Natl Astron Observ Japan, 2-21-1 Osawa, Tokyo 1818588, Japan 10.Chinese Acad Sci South Amer Ctr Astron, South Amer Ctr Astron, Natl Astron Observ, Beijing 100101, Peoples R China 11.Zhubanov Univ, Heriot Watt Int Fac, 263 Zhubanov Bros St, Aktobe 030000, Kazakhstan 12.Astana IT Univ, Dept Computat & Data Sci, 55-11 Mangilik El Ave, Astana 010000, Kazakhstan 13.Fesenkov Astrophys Inst, 23 Observ St, Alma Ata 050020, Kazakhstan 14.Abai Kazakh Natl Pedag Univ, Inst Math Phys & Informat, Alma Ata 050010, Kazakhstan |
| Recommended Citation GB/T 7714 |
Komesh, Toktarkhan,Garay, Guido,Henkel, Christian,et al. Infall Motions in the Hot Core Associated with the Hypercompact H |
| APA |
Komesh, Toktarkhan.,Garay, Guido.,Henkel, Christian.,Omar, Aruzhan.,Estalella, Robert.,...&Manapbayeva, Arailym.(2024).Infall Motions in the Hot Core Associated with the Hypercompact H |
| MLA |
Komesh, Toktarkhan,et al."Infall Motions in the Hot Core Associated with the Hypercompact H |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Komesh-2024-Infall M（1567KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment