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

doi:10.1093/mnras/stad3782

YNAO OpenIR > 星系类星体研究组

	α-enhanced astrochemistry: the carbon cycle in extreme galactic conditions
	Bisbas, Thomas G 1; Zhang, Zhi-Yu 2,3; Gjergo, Eda 2,3; Zhao YH(赵应和)4,5 ; Luo, Gan 2,6; Quan, Donghui 1,7; Jiang, Xue-Jian 1; Sun, Yichen 2,3; Topkaras, Theodoros 8; Li, Di 1,9,10; Guo, Ziyi 2,3
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2023-11-27
卷号	527 期号:3 页码:8886-8906
DOI	10.1093/mnras/stad3782
产权排序	第4完成单位
收录类别	SCI ; EI
关键词	radiative transfer methods: numerical ISM: abundances photodissociation region (PDR) galaxies: ISM
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.
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
项目资助者	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
语种	英语
学科领域	天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
文章类型	Article
出版者	OXFORD UNIV PRESS
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN	0035-8711
URL	查看原文
WOS记录号	WOS:001157412000007
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	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
EI入藏号	20240515462953
EI主题词	Galaxies
EI分类号	657.2 Extraterrestrial Physics and Stellar Phenomena - 802.2 Chemical Reactions - 921.6 Numerical Methods
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	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.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, China; 3.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Ministry of Education, Nanjing 210093, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; 5.Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100101, P. R. China; 6.Institut de Radioastronomie Millimetrique, 300 rue de la Piscine, Domaine Universitaire de Grenoble, F-38406 Saint-Martin d’Héres, France; 7.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, No. 150 Science 1-Street, Urumqi 830011, P. R. China; 8.I. Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany; 9.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; 10.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa
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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