First detection of a deuterated molecule in a starburst environment within NGC 253
文献类型：期刊论文
| 作者 | Butterworth, J.4; Martin, S.3,5; Rivilla, V. M.6; Viti, S.4,7,8; Aladro, R.9; Colzi, L.6; Fontani, F.10,11,12; Harada, N.13,14,15; Henkel, C.1,2; Jimenez-Serra, I.6 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2025-01-03 |
| 卷号 | 693页码:A65 |
| 关键词 | astrochemistry ISM: molecules galaxies: active galaxies: ISM galaxies: starburst |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202452456 |
| 产权排序 | 15 |
| 英文摘要 | Context. Deuterium was primarily created during the Big Bang nucleosynthesis. This fact, alongside its fractionation reactions resulting in enhanced abundances of deuterated molecules, means that deuterium abundances can be used to better understand many processes within the interstellar medium as well as its history. Previously, observations of deuterated molecules have been limited to the Galaxy, the Magellanic Clouds, and (with respect to HD) to quasar absorption spectra. Aims. We present the first robust detection of a deuterated molecule in a starburst environment and, apart from HD, the first one detected outside the Local Group. As such, we could constrain the deuterium fractionation as observed by DCN. Methods. We observed the central molecular zone (CMZ) of the nearby starburst galaxy NGC 253 covering multiple giant molecular clouds (GMCs) with cloud scale observations (similar to 30 pc) using the Atacama Large Millimeter/submillimeter Array. Via the MADCUBA package, we were able to perform local thermodynamic equilibrium analysis in order to obtain deuterium fractionation estimates. Results. We detected DCN in the nuclear region of the starburst galaxy NGC 253 and estimated the deuterium fractionation (D/H ratio) of DCN within the GMCs of the CMZ of NGC 253. We found a range of 5x10(-4) to 10x10(-4), which is relatively similar to the values observed in warm galactic star-forming regions. We also determined an upper limit of D/H of 8x10(-5) from DCO+ within one region, closer to the cosmic value of D/H. Conclusions. Our observations of deuterated molecules within NGC 253 appear to be consistent with previous galactic studies of star-forming regions. This implies that warmer gas temperatures increase the abundance of DCN relative to other deuterated species. This study also further expands the regions, particularly in the extragalactic domain, in which deuterated species have been detected. |
| WOS关键词 | SUPER STAR-CLUSTERS ; EVOLUTIONARY TRACER ; TEMPERATURE PROBE ; COLOGNE DATABASE ; DEUTERIUM ; ORIGIN ; FRACTIONATION ; SPECTROSCOPY ; ABUNDANCES ; EMISSION |
| 资助项目 | European Research Council (ERC) under the European Union[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 A way of making Europe ; MICIU/AEI[RYC2020-029387-I] ; MICIU/AEI[CNS2023-144464] ; ESF, Investing in your future, from the Consejo Superior de Investigaciones Cientificas (CSIC) ; Centro de Astrobiologia (CAB)[20225AT015] ; European Union NextGenerationEU/PRTR |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001521812800039 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | European Research Council (ERC) under the European Union ; Spanish Ministry of Science, Innovation and Universities/State Agency of Research MICIU/AEI ; ERDF A way of making Europe ; MICIU/AEI ; ESF, Investing in your future, from the Consejo Superior de Investigaciones Cientificas (CSIC) ; Centro de Astrobiologia (CAB) ; European Union NextGenerationEU/PRTR |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7987]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Butterworth, J. |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 3.European Southern Observ, Alonso Cordova 3107, Santiago 7630355, Chile 4.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands 5.Joint ALMA Observ, Alonso Cordova 3107, Santiago 7630355, Chile 6.CSIC, Ctr Astrobiol CAB, INTA, Ctra Torrejon Ajalvir Km 4, Madrid 28850, Spain 7.Univ Bonn, Transdisciplinary Res Area TRA, Matter Argelander Inst Astron, Bonn, Germany 8.UCL, Phys & Astron, London, England 9.Elsevier, Radarweg 29, NL-1043 NX Amsterdam, Netherlands 10.Ist Nazl Astrofis INAF, Osservatorio Astrofis Arcetri, Florence, Italy |
| 推荐引用方式 GB/T 7714 | Butterworth, J.,Martin, S.,Rivilla, V. M.,et al. First detection of a deuterated molecule in a starburst environment within NGC 253[J]. ASTRONOMY & ASTROPHYSICS,2025,693:A65. |
| APA | Butterworth, J..,Martin, S..,Rivilla, V. M..,Viti, S..,Aladro, R..,...&Jimenez-Serra, I..(2025).First detection of a deuterated molecule in a starburst environment within NGC 253.ASTRONOMY & ASTROPHYSICS,693,A65. |
| MLA | Butterworth, J.,et al."First detection of a deuterated molecule in a starburst environment within NGC 253".ASTRONOMY & ASTROPHYSICS 693(2025):A65. |
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来源：新疆天文台
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