α-enhanced astrochemistry: the carbon cycle in extreme galactic conditions | |
Bisbas, Thomas G1; Zhang, Zhi-Yu2,10; Gjergo, Eda2,10; Zhao YH(赵应和)3,4; Luo, Gan5,10; Quan, Donghui1,6; Jiang, Xue-Jian1; Sun, Yichen2,10; Topkaras, Theodoros7; Li, Di1,8,9 | |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
2023-11-27 | |
卷号 | 527期号:3页码:8886-8906 |
关键词 | radiative transfer methods: numerical ISM: abundances photodissociation region (PDR) galaxies: ISM |
ISSN号 | 0035-8711 |
DOI | 10.1093/mnras/stad3782 |
产权排序 | 第4完成单位 |
文献子类 | Article |
英文摘要 | Astrochemistry has been widely developed as a power tool to probe the physical properties of the interstellar medium (ISM) in various conditions of the Milky Way (MW) Galaxy, and in near and distant galaxies. Most current studies conventionally apply linear scaling to all elemental abundances based on the gas-phase metallicity. However, these elements, including carbon and oxygen, are enriched differentially by stellar nucleosynthesis and the overall galactic chemical evolution, evident from alpha-enhancement in multiple galactic observations such as starbursts, high-redshift star-forming galaxies, and low-metallicity dwarfs. We perform astrochemical modelling to simulate the impact of an alpha-enhanced ISM gas cloud on the abundances of the three phases of carbon (C+, C, CO) dubbed as 'the carbon cycle'. The ISM environmental parameters considered include two cosmic-ray ionization rates (zeta(CR) = 10(-17) and 10(-15) s(-1)), two isotropic FUV radiation field strengths (chi/chi(0) = 1 and 10(2)), and (sub-)linear dust-to-gas relations against metallicity, mimicking the ISM conditions of different galaxy types. In galaxies with [C/O] < 0, CO, C, and C+, all decrease in both abundances and emission, though with differential biases. The low-J CO emission is found to be the most stable tracer for the molecular gas, while C and C+ trace H-2 gas only under limited conditions, in line with recent discoveries of [C i]-dark galaxies. We call for caution when using [C ii] 158 mu m and [C i](1-0) as alternative H-2-gas tracers for both diffuse and dense gas with non-zero [C/O] ratios. |
学科主题 | 天文学 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
资助项目 | National Natural Science Foundation of China[12173016]; National Natural Science Foundation of China[12041305]; National Natural Science Foundation of China (NSFC); Program for Innovative Talents, Entrepreneur in Jiangsu[CMS-CSST-2021-A08]; Program for Innovative Talents, Entrepreneur in Jiangsu[CMS-CSST-2021-A07]; China Manned Space Project[12373026]; NSFC |
WOS关键词 | C-II EMISSION ; LINE ENERGY-DISTRIBUTIONS ; EARLY CHEMICAL EVOLUTION ; NEUTRAL ATOMIC CARBON ; STAR-FORMING GALAXIES ; FINE-STRUCTURE LINES ; TOTAL MOLECULAR GAS ; RAY IONIZATION RATE ; MU-M EMISSION ; COSMIC-RAYS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:001157412000007 |
资助机构 | National Natural Science Foundation of China[12173016, 12041305] ; National Natural Science Foundation of China (NSFC) ; Program for Innovative Talents, Entrepreneur in Jiangsu[CMS-CSST-2021-A08, CMS-CSST-2021-A07] ; China Manned Space Project[12373026] ; NSFC |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26538] |
专题 | 星系类星体研究组 |
作者单位 | 1.Research Center for Intelligent Computing Platforms, Zhejiang Lab, Hangzhou 311100, China; 2.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210093, China; 3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; 4.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, P. R. China; 5.Institut de Radioastronomie Millimetrique, 300 rue de la Piscine, Domaine Universitaire de Grenoble, F-38406 Saint-Martin d’Héres, France; 6.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, No. 150 Science 1-Street, Urumqi 830011, P. R. China; 7.I. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany; 8.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 9.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa 10.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China; |
推荐引用方式 GB/T 7714 | Bisbas, Thomas G,Zhang, Zhi-Yu,Gjergo, Eda,et al. α-enhanced astrochemistry: the carbon cycle in extreme galactic conditions[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,527(3):8886-8906. |
APA | Bisbas, Thomas G.,Zhang, Zhi-Yu.,Gjergo, Eda.,赵应和.,Luo, Gan.,...&Guo, Ziyi.(2023).α-enhanced astrochemistry: the carbon cycle in extreme galactic conditions.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,527(3),8886-8906. |
MLA | Bisbas, Thomas G,et al."α-enhanced astrochemistry: the carbon cycle in extreme galactic conditions".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 527.3(2023):8886-8906. |
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