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The HASHTAG project I. A survey of CO(3-2) emission from the star forming disc of M31
Li, Zongnan1,2; Li, Zhiyuan1,2; Smith, Matthew W. L.3; Wilson, Christine D.4; Gao, Yu5; Eales, Stephen A.3; Ao, Yiping5; Bureau, Martin6,7; Chung, Aeree8; Davis, Timothy A.3; de Grijs, Richard9,10,11; Eden, David J.12; He JH(何金华)13,14,15; Hughes, Tom M.14,16,17,18; Jiang, Xuejian5; Kemper, Francisca19,20; Lamperti, Isabella21; Lee, Bumhyun8; Lee, Chien-Hsiu22; Michalowski, Michal J.23; Parsons, Harriet24; Ragan, Sarah3; Scicluna, Peter20; Shi, Yong1,2; Tang, Xindi25; Tomicic, Neven26; Viaene, Sebastien27,28; Williams, Thomas G.3; Zhu, Ming29
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2020-02-01
Volume492Issue:1Pages:195-209
DOI10.1093/mnras/stz3409
Contribution Rank第13完成单位
Indexed BySCI
KeywordISM: molecules galaxies: individual (M 31) galaxies: ISM
Abstract

We present a CO(3-2) survey of selected regions in the M31 disc as part of the JCMT large programme, HARP and SCUBA-2 High-Resolution Terahertz Andromeda Galaxy Survey (HASHTAG). The 12 CO(3-2) fields in this survey cover a total area of 60 arcmin(2), spanning a deprojected radial range of 2-14 kpc across the M31 disc. Combining these observations with existing IRAM 30m CO(1-0) observations and JCMT CO(3-2) maps of the nuclear region of M31, as well as dust temperature and star formation rate surface density maps, we are able to explore the radial distribution of the CO(3-2)/CO(1-0) integrated intensity ratio (R-31) and its relationship with dust temperature and star formation. We find that the value of R-31 between 2 and 9 kpc galactocentric radius is 0.14, significantly lower than what is seen in the nuclear ring at 1 kpc (R-31 similar to 0.8), only to rise again to 0.27 for the fields centred on the 10 kpc star forming ring. We also found that R-31 is positively correlated with dust temperature, with Spearman's rank correlation coefficient rho = 0.55. The correlation between star formation rate surface density and CO(3-2) intensity is much stronger than with CO(1-0), with rho = 0.54 compared to -0.05, suggesting that the CO(3-2) line traces warmer and denser star forming gas better. We also find that R-31 correlates well with star formation rate surface density, with rho = 0.69.

Funding ProjectNational Key Research and Development Program of China[2017YFA0402700] ; National Key Research and Development Program of China[2017YFA0402703] ; National Key Research and Development Program of China[2017YFA0402704] ; Science and Technology Facilities Council of the United Kingdom ; JCMT project[M17BL005] ; National Natural Science Foundation of China[11873028] ; National Natural Science Foundation of China[11861131007] ; National Natural Science Foundation of China[11420101002] ; National Natural Science Foundation of China[11873086] ; National Natural Science Foundation of China[U1631237] ; Chinese Academy of Sciences Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH008] ; Natural Science and Engineering Research Council of Canada ; Canada Research Chairs program ; Chinese Academy of Sciences (CAS) ; National Commission for Scientific and Technological Research of Chile (CONICYT) through a CAS-CONICYT Joint Postdoctoral Fellowship ; Ministry of Science and Technology of Taiwan[MOST107-2119-M-001-031-MY3] ; Academia Sinica[AS-IA-106-M03] ; National Science Centre, Poland through the SONATA BIS grant[2018/30/E/ST9/00208] ; Yunnan Province of China[2017HC018]
Funding OrganizationNational Key Research and Development Program of China[2017YFA0402700, 2017YFA0402703, 2017YFA0402704] ; Science and Technology Facilities Council of the United Kingdom ; JCMT project[M17BL005] ; National Natural Science Foundation of China[11873028, 11861131007, 11420101002, 11873086, U1631237] ; Chinese Academy of Sciences Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH008] ; Natural Science and Engineering Research Council of Canada ; Canada Research Chairs program ; Chinese Academy of Sciences (CAS) ; National Commission for Scientific and Technological Research of Chile (CONICYT) through a CAS-CONICYT Joint Postdoctoral Fellowship ; Ministry of Science and Technology of Taiwan[MOST107-2119-M-001-031-MY3] ; Academia Sinica[AS-IA-106-M03] ; National Science Centre, Poland through the SONATA BIS grant[2018/30/E/ST9/00208] ; Yunnan Province of China[2017HC018]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
MOST Discipline Catalogue理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000512329900013
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMASSIVE MOLECULAR CLOUDS ; NEARBY GALAXIES ; FORMATION LAW ; CO EMISSION ; INNER DISK ; J=3-2 SURVEY ; GAS ; DUST ; DENSITY ; TEMPERATURE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/22403
Collection大样本恒星演化研究组
Corresponding AuthorLi, Zongnan; Li, Zhiyuan; Smith, Matthew W. L.
Affiliation1.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, China
2.Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Nanjing 210023, China
3.School of Physics & Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
4.Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
5.Purple Mountain Observatory and Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, Nanjing 210023, China
6.Sub-Department of Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
7.Yonsei Frontier Lab and Department of Astronomy, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
8.Department of Astronomy, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
9.Department of Physics and Astronomy, Macquarie University, Balaclava Road, Sydney NSW 2109, Australia
10.Research Centre for Astronomy, Astrophysics and Astrophotonics, Macquarie University, Balaclava Road, Sydney NSW 2109, Australia
11.International Space Science Institute–Beijing, 1 Nanertiao, Zhongguancun, Hai Dian District, Beijing 100190, China
12.Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK
13.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
14.Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
15.15Departamento de Astronom´ıa, Universidad de Chile, Casilla 36-D, Santiago, Chile
16.16Instituto de F´ısica y Astronom´ıa, Universidad de Valpara´ıso, Avda. Gran Breta˜na 1111 Valpara´ıso, Chile
17.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China
18.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
19.European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching D-85748, Germany
20.Academia Sinica, Institute of Astronomy and Astrophysics, 11F Astronomy-Mathematics Building, NTU/AS campus, No. 1, Section 4, Roosevelt Rd., Taipei 10617, Taiwan
21.Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
22.National Optical Astronomy Observatory, 950 N. Cherry Avenue, Tucson, AZ 85719, USA
23.Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, PL-60-286 Pozna´n, Poland
24.East Asian Observatory, 660 N. A‘oh¯ok¯u Place, University Park, Hilo, HI 96720, USA
25.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 830011 Urumqi, China
26.Max Planck Institute for Astronomy (MPIA), K¨onigstuhl 17, D-69117 Heidelberg, Germany
27.Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
28.Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium
29.National Astronomical Observatory of China, 20A Datun Road, Chaoyang District, Beijing 100012, China
Recommended Citation
GB/T 7714
Li, Zongnan,Li, Zhiyuan,Smith, Matthew W. L.,et al. The HASHTAG project I. A survey of CO(3-2) emission from the star forming disc of M31[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,492(1):195-209.
APA Li, Zongnan.,Li, Zhiyuan.,Smith, Matthew W. L..,Wilson, Christine D..,Gao, Yu.,...&Zhu, Ming.(2020).The HASHTAG project I. A survey of CO(3-2) emission from the star forming disc of M31.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,492(1),195-209.
MLA Li, Zongnan,et al."The HASHTAG project I. A survey of CO(3-2) emission from the star forming disc of M31".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 492.1(2020):195-209.
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