The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey - IX. (CO)-C-12 J=3 -> 2 observations of NGC 2976 and NGC 3351
文献类型：期刊论文
| 作者 | Tan, Boon-Kok1,2; Leech, J.1; Rigopoulou, D.1,3; Warren, B. E.4,5; Wilson, C. D.4; Attewell, D.4; Azimlu, M.6; Bendo, G. J.7; Butner, H. M.8; Brinks, E.9 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2013-11-01 |
| 卷号 | 436期号:1页码:921-933 |
| 关键词 | ISM: molecules galaxies: individual: NGC 2976 galaxies: individual: NGC 3351 galaxies: ISM-infrared: galaxies |
| 英文摘要 | We present (CO)-C-12 J = 3 -> 2 maps of NGC 2976 and NGC 3351 obtained with the James Clerk Maxwell Telescope (JCMT), both early targets of the JCMT Nearby Galaxy Legacy Survey (NGLS). We combine the present observations with (CO)-C-12 J = 1 -> 0 data and find that the computed (CO)-C-12 J = 3 -> 2 to (CO)-C-12 J = 1 -> 0 line ratio (R-31) agrees with values measured in other NGLS field galaxies. We compute the M-H2 value and find that it is robust against the value of R-31 used. Using HI data from The HI Nearby Galaxy Survey, we find a tight correlation between the surface density of H-2 and star formation rate density for NGC 3351 when (CO)-C-12 J = 3 -> 2 data are used. Finally, we compare the (CO)-C-12 J = 3 -> 2 intensity with the polycyclic aromatic hydrocarbon (PAH) 8 mu m surface brightness and find a good correlation in the high surface brightness regions. We extend this study to include all 25 Spitzer Infrared Nearby Galaxies Survey galaxies within the NGLS sample and find a tight correlation at large spatial scales. We suggest that both PAH 8 mu m and (CO)-C-12 J = 3 -> 2 are likely to originate in regions of active star formation. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000326435100096 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5916]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England 2.Wawasan Open Univ, Inst Res & Innovat, George Town 10050, Malaysia 3.Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England 4.McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada 5.Univ Western Australia, Intl Ctr Radio Astron Res, Crawley, WA 6009, Australia 6.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA 7.Univ Manchester, Jodrell Bank, Ctr Astrophys, UK ALMA Reg Ctr Node, Manchester M13 9PL, Lancs, England 8.James Madison Univ, Dept Phys & Astron, Harrisonburg, VA 22807 USA 9.Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England 10.Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, London SW7 2AZ, England |
| 推荐引用方式 GB/T 7714 | Tan, Boon-Kok,Leech, J.,Rigopoulou, D.,et al. The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey - IX. (CO)-C-12 J=3 -> 2 observations of NGC 2976 and NGC 3351[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,436(1):921-933. |
| APA | Tan, Boon-Kok.,Leech, J..,Rigopoulou, D..,Warren, B. E..,Wilson, C. D..,...&Zhu, M..(2013).The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey - IX. (CO)-C-12 J=3 -> 2 observations of NGC 2976 and NGC 3351.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,436(1),921-933. |
| MLA | Tan, Boon-Kok,et al."The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey - IX. (CO)-C-12 J=3 -> 2 observations of NGC 2976 and NGC 3351".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 436.1(2013):921-933. |
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来源：国家天文台
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