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, 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 |
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 | 第13完成单位 |
文献子类 | Article |
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. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
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[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] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/22402] |
专题 | 云南天文台_大样本恒星演化研究组 |
通讯作者 | Li, Zongnan; Li, Zhiyuan; Smith, Matthew W. L. |
作者单位 | 1.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 |
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. |
入库方式: OAI收割
来源:云南天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。