An ALCHEMI inspection of sulphur-bearing species towards the central molecular zone of NGC 253
文献类型：期刊论文
| 作者 | Bouvier, M.17; Viti, S.17; Behrens, E.18; Butterworth, J.17; Huang, K. -y.17; Mangum, J. G.4; Harada, N.5,6; Martin, S.7,8; Rivilla, V. M.9; Muller, S.10 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2024-09-02 |
| 卷号 | 689页码:A64 |
| 关键词 | astrochemistry ISM: molecules galaxies: abundances galaxies: active galaxies: ISM galaxies: starburst |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202449186 |
| 产权排序 | 15 |
| 英文摘要 | Context. Sulphur-bearing species are detected in various environments within Galactic star-forming regions and are particularly abundant in the gas phase of outflow and shocked regions in addition to photo-dissociation regions. Thanks to the powerful capabilities of millimetre interferometers, studying sulphur-bearing species and their region of emission in various extreme extra-galactic environments (e.g. starburst and active galactic nuclei) and at a high-angular resolution and sensitivity is now possible. Aims. In this work, we aim to investigate the nature of the emission from the most common sulphur-bearing species observable at millimetre wavelengths towards the nuclear starburst of the nearby galaxy NGC 253. We intend to understand which type of regions are probed by sulphur-bearing species and which process(es) dominate(s) the release of sulphur into the gas phase. Methods. We used the high-angular resolution (1.6 '' or similar to 27 pc) observations from the ALCHEMI ALMA Large Program to image several sulphur-bearing species towards the central molecular zone (CMZ) of NGC 253. We performed local thermodynamic equilibrium (LTE) and non-LTE large velocity gradient (LVG) analyses to derive the physical conditions of the gas where the sulphur-bearing species are emitted, and their abundance ratios across the CMZ. Finally, we compared our results with previous ALCHEMI studies and a few selected Galactic environments. Results. To reproduce the observations, we modelled two gas components for most of the sulphur-bearing species investigated in this work. We found that not all sulphur-bearing species trace the same type of gas: strong evidence indicates that H2S and part of the emission of OCS, H2CS, and SO are tracing shocks, whilst part of SO and CS emission rather traces the dense molecular gas. For some species, such as CCS and SO2, we could not firmly conclude on their origin of emission. Conclusions. The present analysis indicates that the emission from most sulphur-bearing species throughout the CMZ is likely dominated by shocks associated with ongoing star formation. In the inner part of the CMZ where the presence of super star clusters was previously indicated, we could not distinguish between shocks or thermal evaporation as the main process releasing the S-bearing species. |
| WOS关键词 | SPECTRAL-LINE SURVEY ; SUPER STAR-CLUSTERS ; EXTRAORDINARY SOURCES ANALYSIS ; LIMITED MILLIMETER SURVEY ; ORION KL ; HERSCHEL OBSERVATIONS ; FORMING REGIONS ; APERTURE SYNTHESIS ; NUCLEAR STARBURST ; ALMA OBSERVATIONS |
| 资助项目 | European Research Council (ERC)[MOPPEX 833460] ; Spanish Ministry of Science, Innovation and Universities/State Agency of Research MICIU/AEI[PID2019-105552RB-C41] ; Spanish Ministry of Science, Innovation and Universities/State Agency of Research MICIU/AEI[PID2022-136814NB-I00] ; ERDF, UE ; MICIU/AEI[RYC2020-029387-I] ; ESF, Investing in your future ; Consejo Superior de Investigaciones Cientificas (CSIC) ; Centro de Astrobiologia (CAB) (Proyectos intramurales especiales del CSIC)[20225AT015] ; JSPS KAKENHI[JP21K03634] ; Swedish Research Council[621-2011-4143] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001304236700003 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | European Research Council (ERC) ; Spanish Ministry of Science, Innovation and Universities/State Agency of Research MICIU/AEI ; ERDF, UE ; MICIU/AEI ; ESF, Investing in your future ; Consejo Superior de Investigaciones Cientificas (CSIC) ; Centro de Astrobiologia (CAB) (Proyectos intramurales especiales del CSIC) ; JSPS KAKENHI ; Swedish Research Council |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7030]  |
| 专题 | 恒星形成与演化研究团组 |
| 通讯作者 | Bouvier, M. |
| 作者单位 | 1.Univ Sao Paulo, Dept Astron, Inst Astron Geofis & Ciencias Atmosfer, BR-05508900 Sao Paulo, SP, Brazil 2.New Mexico Inst Min & Technol, 801 Leroy Pl, Socorro, NM 87801 USA 3.Natl Radio Astron Observ, POB O,1003 Lopezville Rd, Socorro, NM 87801 USA 4.Natl Radio Astron Observ, 520 Edgemond Rd, Charlottesville, VA 22903 USA 5.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 6.Grad Univ Adv Studies SOKENDAI, Sch Sci, Dept Astron, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 7.European Southern Observ, Alonso Cordova 3107, Santiago 7630355, Vitacura, Chile 8.Joint ALMA Observ, Alonso Cordova 3107, Santiago 7630355, Chile 9.INTA CSIC, Ctr Astrobiol CAB, Carretera Ajalvir Km 4, Madrid 28850, Spain 10.Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, S-43992 Onsala, Sweden |
| 推荐引用方式 GB/T 7714 | Bouvier, M.,Viti, S.,Behrens, E.,et al. An ALCHEMI inspection of sulphur-bearing species towards the central molecular zone of NGC 253[J]. ASTRONOMY & ASTROPHYSICS,2024,689:A64. |
| APA | Bouvier, M..,Viti, S..,Behrens, E..,Butterworth, J..,Huang, K. -y..,...&Yan, Y. T..(2024).An ALCHEMI inspection of sulphur-bearing species towards the central molecular zone of NGC 253.ASTRONOMY & ASTROPHYSICS,689,A64. |
| MLA | Bouvier, M.,et al."An ALCHEMI inspection of sulphur-bearing species towards the central molecular zone of NGC 253".ASTRONOMY & ASTROPHYSICS 689(2024):A64. |
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来源：新疆天文台
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