CHIMPS: the (CO)-C-13/(CO)-O-18 (J=3 -> 2) Heterodyne Inner Milky Way Plane Survey
文献类型：期刊论文
| 作者 | Rigby, A. J.1; Moore, T. J. T.1; Plume, R.2; Eden, D. J.1; Urquhart, J. S.3; Thompson, M. A.4; Mottram, J. C.5; Brunt, C. M.6; Butner, H. M.7; Dempsey, J. T.8 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2016-03-01 |
| 卷号 | 456期号:3页码:2885-2899 |
| 关键词 | molecular data surveys stars: formation ISM: molecules ISM: structure submillimetre: ISM |
| 英文摘要 | We present the (CO)-C-13/(CO)-O-18 (J= 3 -> 2) Heterodyne Inner Milky Way Plane Survey (CHIMPS) which has been carried out using the Heterodyne Array Receiver Program on the 15 m James Clerk Maxwell Telescope (JCMT) in Hawaii. The high-resolution spectral survey currently covers vertical bar b vertical bar <= 0.degrees 5 and 28 degrees less than or similar to l less than or similar to 46 degrees, with an angular resolution of 15 arcsec in 0.5 km s(-1) velocity channels. The spectra have a median rms of similar to 0.6 K at this resolution, and for optically thin gas at an excitation temperature of 10 K, this sensitivity corresponds to column densities of N-H2 similar to 3 x 10(20) cm(-2) and N-H2 similar to 4 x 10(21) cm(-2) for (CO)-C-13 and (CO)-O-18, respectively. The molecular gas that CHIMPS traces is at higher column densities and is also more optically thin than in other publicly available CO surveys due to its rarer isotopologues, and thus more representative of the three-dimensional structure of the clouds. The critical density of the J = 3 -> 2 transition of CO is greater than or similar to 10(4) cm(-3) at temperatures of <= 20 K, and so the higher density gas associated with star formation is well traced. These data complement other existing Galactic plane surveys, especially the JCMT Galactic Plane Survey which has similar spatial resolution and column density sensitivity, and the Herschel infrared Galactic Plane Survey. In this paper, we discuss the observations, data reduction and characteristics of the survey, presenting integrated-emission maps for the region covered. Position-velocity diagrams allow comparison with Galactic structure models of the Milky Way, and while we find good agreement with a particular four-arm model, there are some significant deviations. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000372265200045 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5413]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Liverpool John Moores Univ, Astrophys Res Inst, IC2,Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England 2.Univ Calgary, Dept Phys & Astron, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada 3.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 4.Univ Hertfordshire, Sci & Technol Res Inst, Ctr Astrophys Res, Coll Lane, Hatfield AL10 9AB, Herts, England 5.Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands 6.Univ Exeter, Sch Phys, Stocker Rd, Exeter EX4 4QL, Devon, England 7.James Madison Univ, Dept Phys & Astron, MSC 4502,901 Carrier Dr, Harrisonburg, VA 22801 USA 8.Joint Astron Ctr, 660 N Aohoku Pl,Univ Pk, Hilo, HI 96720 USA 9.Western Kentucky Univ, Dept Phys & Astron, 1906 Coll Hts Blvd, Bowling Green, KY 42101 USA 10.Large Synopt Survey Telescope Project Off, 933 N Cherry Ave, Tucson, AZ 85721 USA |
| 推荐引用方式 GB/T 7714 | Rigby, A. J.,Moore, T. J. T.,Plume, R.,et al. CHIMPS: the (CO)-C-13/(CO)-O-18 (J=3 -> 2) Heterodyne Inner Milky Way Plane Survey[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,456(3):2885-2899. |
| APA | Rigby, A. J..,Moore, T. J. T..,Plume, R..,Eden, D. J..,Urquhart, J. S..,...&Zhu, M..(2016).CHIMPS: the (CO)-C-13/(CO)-O-18 (J=3 -> 2) Heterodyne Inner Milky Way Plane Survey.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,456(3),2885-2899. |
| MLA | Rigby, A. J.,et al."CHIMPS: the (CO)-C-13/(CO)-O-18 (J=3 -> 2) Heterodyne Inner Milky Way Plane Survey".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456.3(2016):2885-2899. |
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