The HASHTAG project I. A survey of CO(3-2) emission from the star forming disc of M31
文献类型：期刊论文
| 作者 | Li, Zongnan29,30; Li, Zhiyuan29,30; Smith, Matthew W. L.28; Wilson, Christine D.27; Gao, Yu25,26; Eales, Stephen A.28; Ao, Yiping25,26; Bureau, Martin22,23,24; Chung, Aeree22; Davis, Timothy A.28 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 492期号:1页码:195-209 |
| ISSN号 | 0035-8711 |
| 关键词 | ISM: molecules galaxies: individual (M 31) galaxies: ISM |
| DOI | 10.1093/mnras/stz3409 |
| 产权排序 | 25 |
| 英文摘要 | 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. |
| WOS关键词 | MASSIVE MOLECULAR CLOUDS ; NEARBY GALAXIES ; FORMATION LAW ; CO EMISSION ; INNER DISK ; J=3-2 SURVEY ; GAS ; DUST ; DENSITY ; TEMPERATURE |
| 资助项目 | 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研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000512329900013 |
| 资助机构 | 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 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/3366]  |
| 专题 | 恒星形成与演化研究团组 研究单元未命名 |
| 通讯作者 | Li, Zongnan; Li, Zhiyuan; Smith, Matthew W. L. |
| 作者单位 | 1.Natl Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China 2.Univ Ghent, Sterrenkundig Observ, Krijgslaan 281, B-9000 Ghent, Belgium 3.Univ Hertfordshire, Ctr Astrophys Res, Coll Lane, Hatfield AL10 9AB, Herts, England 4.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 6.East Asian Observ, 660 N Aohoku Pl,Univ Pk, Hilo, HI 96720 USA 7.Adam Mickiewicz Univ, Fac Phys, Astron Observ Inst, Ul Sloneczna 36, PL-60286 Poznan, Poland 8.Natl Opt Astron Observ, 950 N Cherry Ave, Tucson, AZ 85719 USA 9.UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England 10.Acad Sinica, Inst Astron & Astrophys, 11F Astron Math Bldg,NTU AS Campus 1,Sect 4, Taipei 10617, Taiwan |
| 推荐引用方式 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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