Astrochemical Properties of Planck Cold Clumps
文献类型：期刊论文
| 作者 | Tatematsu, Ken'ichi1,2; Liu, Tie3; Ohashi, Satoshi4; Sanhueza, Patricio1; Quang Nguyen Luong1,3; Hirota, Tomoya1,2; Liu, Sheng-Yuan5; Hirano, Naomi5; Choi, Minho3; Kang, Miju3 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 228期号:2 |
| 关键词 | ISM: clouds ISM: molecules ISM: structure stars: formation |
| 英文摘要 | We observed 13 Planck cold clumps with the James Clerk Maxwell Telescope/SCUBA-2 and with the Nobeyama 45 m radio telescope. The N2H+ distribution obtained with the Nobeyama telescope is quite similar to SCUBA-2 dust distribution. The 82 GHz HC3N, 82 GHz CCS, and 94 GHz CCS emission are often distributed differently with respect to the N2H+ emission. The CCS emission, which is known to be abundant in starless molecular cloud cores, is often very clumpy in the observed targets. We made deep single-pointing observations in DNC, (HNC)-C-13, N2D+, and cyclic-C3H2 toward nine clumps. The detection rate of N2D+ is 50%. Furthermore, we observed the NH3 emission toward 15 Planck cold clumps to estimate the kinetic temperature, and confirmed that most targets are cold (less than or similar to 20 K). In two of the starless clumps we observed, the CCS emission is distributed as it surrounds the N2H+ core (chemically evolved gas), which resembles the case of L1544, a prestellar core showing collapse. In addition, we detected both DNC and N2D+. These two clumps are most likely on the verge of star formation. We introduce the chemical evolution factor (CEF) for starless cores to describe the chemical evolutionary stage, and analyze the observed Planck cold clumps. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | MOLECULAR CLOUD CORES ; STAR-FORMING REGIONS ; INFRARED DARK CLOUDS ; 45-M RADIO TELESCOPE ; DENSE CORES ; DEUTERIUM FRACTIONATION ; CHEMICAL VARIATION ; MAPPING OBSERVATIONS ; PHYSICAL CONDITIONS ; ANGULAR-MOMENTUM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000397312100002 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8245]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Natl Astron Observ Japan, Natl Inst Nat Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 2.SOKENDAI Grad Univ Adv Studies, Dept Astron Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 3.Korea Astron & Space Sci Inst, Daedeokdaero 776, Daejeon, South Korea 4.Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan 5.Acad Sinica, Inst Astron & Astrophys, 11F Astron Math Bldg,AS NTU 1,Sect 4,Roosvelt Rd, Taipei 10617, Taiwan 6.Univ Hertfordshire, Sci & Technol Res Inst, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England 7.Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Oxford Rd, Manchester M13 9PL, Lancs, England 8.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 9.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 10.NRC, Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada |
| 推荐引用方式 GB/T 7714 | Tatematsu, Ken'ichi,Liu, Tie,Ohashi, Satoshi,et al. Astrochemical Properties of Planck Cold Clumps[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2017,228(2). |
| APA | Tatematsu, Ken'ichi.,Liu, Tie.,Ohashi, Satoshi.,Sanhueza, Patricio.,Quang Nguyen Luong.,...&Li,Di.(2017).Astrochemical Properties of Planck Cold Clumps.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,228(2). |
| MLA | Tatematsu, Ken'ichi,et al."Astrochemical Properties of Planck Cold Clumps".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 228.2(2017). |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
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。