The TOP-SCOPE Survey of PGCCs: PMO and SCUBA-2 Observations of 64 PGCCs in the Second Galactic Quadrant
文献类型：期刊论文
| 作者 | Zhang,Chuan-Peng2,3,4; Liu,Xiao-Lan4; Wang,Jun-Jie4; Marston,Anthony14; Eden,David9; Samal,Manash R.10; Traficante,Alessio20; Li,Guang-Xing21; Li,Di2,4,5; Tatematsu,Ken’ichi19 |
| 刊名 | The Astrophysical Journal Supplement Series
 |
| 出版日期 | 2018-06-20 |
| 卷号 | 236期号:2 |
| ISSN号 | 0067-0049 |
| 关键词 | dust, extinction ISM: clouds ISM: structure stars: formation |
| DOI | 10.3847/1538-4365/aac513 |
| 英文摘要 | Abstract In order to understand the initial conditions and early evolution of star formation in a wide range of Galactic environments, we carried out an investigation of 64 Planck Galactic cold clumps (PGCCs) in the second quadrant of the Milky Way. Using the 13CO and C18O J?=?1–0 lines and 850 μm continuum observations, we investigated cloud fragmentation and evolution associated with star formation. We extracted 468 clumps and 117 cores from the 13CO line and 850 μm continuum maps, respectively. We made use of the Bayesian distance calculator and derived the distances of all 64 PGCCs. We found that in general, the mass–size plane follows a relation of m?～?r1.67. At a given scale, the masses of our objects are around 1/10 of that of typical Galactic massive star-forming regions. Analysis of the clump and core masses, virial parameters, densities, and mass–size relation suggests that the PGCCs in our sample have a low core formation efficiency (～3.0%), and most PGCCs are likely low-mass star-forming candidates. Statistical study indicates that the 850 μm cores are more turbulent, more optically thick, and denser than the 13CO clumps for star formation candidates, suggesting that the 850 μm cores are likely more appropriate future star formation candidates than the 13CO clumps. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0067-0049-236-2-AAC513 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1933]  |
| 专题 | 恒星形成与演化研究团组 新疆天文台_110米口径全可动射电望远镜（SmART）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究 |
| 作者单位 | 1.Korea Astronomy and Space Science Institute, 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea 2.CAS Key Laboratory of FAST, NAOC, Chinese Academy of Sciences, 100012 Beijing, People’s Republic of China 3.Max-Planck-Institut für Astronomie, K?nigstuhl 17, D-69117 Heidelberg, Germany 4.National Astronomical Observatories, Chinese Academy of Sciences, 100012 Beijing, People’s Republic of China; cpzhang@nao.cas.cn 5.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 6.European Southern Observatory, Karl-Schwarzschild-Str.2, D-85748 Garching bei München, Germany 7.Astronomy Department, University of California, Berkeley, CA 94720, USA 8.Xinjiang Astronomical Observatory, CAS, 150, Science 1-street, 830011 Urumqi, People’s Republic of China 9.Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool, L3 5RF, UK 10.Graduate Institute of Astronomy, National Central University 300, Jhongli City, Taoyuan County 32001, Taiwan |
| 推荐引用方式 GB/T 7714 | Zhang,Chuan-Peng,Liu,Xiao-Lan,Wang,Jun-Jie,et al. The TOP-SCOPE Survey of PGCCs: PMO and SCUBA-2 Observations of 64 PGCCs in the Second Galactic Quadrant[J]. The Astrophysical Journal Supplement Series,2018,236(2). |
| APA | Zhang,Chuan-Peng.,Liu,Xiao-Lan.,Wang,Jun-Jie.,Marston,Anthony.,Eden,David.,...&Liu,Tie.(2018).The TOP-SCOPE Survey of PGCCs: PMO and SCUBA-2 Observations of 64 PGCCs in the Second Galactic Quadrant.The Astrophysical Journal Supplement Series,236(2). |
| MLA | Zhang,Chuan-Peng,et al."The TOP-SCOPE Survey of PGCCs: PMO and SCUBA-2 Observations of 64 PGCCs in the Second Galactic Quadrant".The Astrophysical Journal Supplement Series 236.2(2018). |
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