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α-enhanced astrochemistry: the carbon cycle in extreme galactic conditions

文献类型：期刊论文

作者Bisbas, Thomas G7; Zhang, Zhi-Yu8,9; Gjergo, Eda8,9; Zhao YH(赵应和)1,10; Luo, Gan2,8; Quan, Donghui3,7; Jiang, Xue-Jian7; Sun, Yichen8,9; Topkaras, Theodoros4; Li, Di5,6,7
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2023-11-27
卷号527期号:3页码:8886-8906
ISSN号0035-8711
关键词radiative transfer methods: numerical ISM: abundances photodissociation region (PDR) galaxies: ISM
DOI10.1093/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
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
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
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.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China;
2.Institut de Radioastronomie Millimetrique, 300 rue de la Piscine, Domaine Universitaire de Grenoble, F-38406 Saint-Martin d’Héres, France;
3.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, No. 150 Science 1-Street, Urumqi 830011, P. R. China;
4.I. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany;
5.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
6.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa
7.Research Center for Intelligent Computing Platforms, Zhejiang Lab, Hangzhou 311100, China;
8.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China;
9.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210093, China;
10.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, P. R. 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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