The HASHTAG project I. A survey of CO(3-2) emission from the star forming disc of M31

doi:10.1093/mnras/stz3409

	The HASHTAG project I. A survey of CO(3-2) emission from the star forming disc of M31
	Li, Zongnan 1,2; Li, Zhiyuan 1,2; Smith, Matthew W. L.3; Wilson, Christine D.4; Gao, Yu 5,6; Eales, Stephen A.3; Ao, Yiping 5,6; Bureau, Martin 7,8,9; Chung, Aeree 9; Davis, Timothy A.3; de Grijs, Richard 10,11,12; Eden, David J.13; He, Jinhua 14,15,16; Hughes, Tom M.15,17,18,19; Jiang, Xuejian 5,6; Kemper, Francisca 20,21; Lamperti, Isabella 22; Lee, Bumhyun 9; Lee, Chien-Hsiu 23; Michalowski, Michal J.24; Parsons, Harriet 25; Ragan, Sarah 3; Scicluna, Peter 21; Shi, Yong 1,2; Tang, Xindi26 ; Tomicic, Neven 27; Viaene, Sebastien 28,29; Williams, Thomas G.3; Zhu, Ming 30
	2020-02-01
Source Publication	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
Volume	492 Issue:1 Pages:195-209
Contribution Rank	25
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.
Keyword	ISM: molecules galaxies: individual (M 31) galaxies: ISM
DOI	10.1093/mnras/stz3409
Indexed By	SCI
Language	英语
WOS Keyword	MASSIVE MOLECULAR CLOUDS ; NEARBY GALAXIES ; FORMATION LAW ; CO EMISSION ; INNER DISK ; J=3-2 SURVEY ; GAS ; DUST ; DENSITY ; TEMPERATURE
Funding Project	National 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]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000512329900013
Publisher	OXFORD UNIV PRESS
Funding Organization	National Key Research and Development Program of China ; Science and Technology Facilities Council of the United Kingdom ; JCMT project ; National Natural Science Foundation of China ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; 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 ; Academia Sinica ; National Science Centre, Poland through the SONATA BIS grant ; Yunnan Province of China
Citation statistics	Cited Times:6[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/3367
Collection	射电天文研究室_恒星形成与演化研究团组中国科学院新疆天文台
Corresponding Author	Li, Zongnan; Li, Zhiyuan; Smith, Matthew W. L.
Affiliation	1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China 2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China 3.Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, Wales 4.McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada 5.Chinese Acad Sci, Purple Mt Observ, Nanjing 210023, Peoples R China 6.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210023, Peoples R China 7.Univ Oxford, Subdept Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England 8.Yonsei Univ, Yonsei Frontier Lab, 50 Yonsei Ro, Seoul 03722, South Korea 9.Yonsei Univ, Dept Astron, 50 Yonsei Ro, Seoul 03722, South Korea 10.Macquarie Univ, Dept Phys & Astron, Balaclava Rd, Sydney, NSW 2109, Australia 11.Macquarie Univ, Res Ctr Astron Astrophys & Astrophoton, Balaclava Rd, Sydney, NSW 2109, Australia 12.Int Space Sci Inst Beijing, 1 Nanertiao, Beijing 100190, Peoples R China 13.Liverpool John Moores Univ, Astrophys Res Inst, IC2,Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England 14.Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China 15.Chinese Acad Sci, South Amer Ctr Astron, Natl Astron Observ, Beijing 100012, Peoples R China 16.Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile 17.Univ Valparaiso, Inst Fis & Astron, Avda Gran Bretana 1111, Valparaiso, Chile 18.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China 19.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China 20.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany 21.Acad Sinica, Inst Astron & Astrophys, 11F Astron Math Bldg,NTU AS Campus 1,Sect 4, Taipei 10617, Taiwan 22.UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England 23.Natl Opt Astron Observ, 950 N Cherry Ave, Tucson, AZ 85719 USA 24.Adam Mickiewicz Univ, Fac Phys, Astron Observ Inst, Ul Sloneczna 36, PL-60286 Poznan, Poland 25.East Asian Observ, 660 N Aohoku Pl,Univ Pk, Hilo, HI 96720 USA 26.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 27.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 28.Univ Hertfordshire, Ctr Astrophys Res, Coll Lane, Hatfield AL10 9AB, Herts, England 29.Univ Ghent, Sterrenkundig Observ, Krijgslaan 281, B-9000 Ghent, Belgium 30.Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R 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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