ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). II. Survey Overview: A First Look at 1.3 mm Continuum Maps and Molecular Outflows
文献类型：期刊论文
| 作者 | Dutta,Somnath2; Lee,Chin-Fei2; Liu,Tie3,4; Hirano,Naomi2; Liu,Sheng-Yuan2; Tatematsu,Ken’ichi5,6; Kim,Kee-Tae7,8; Shang,Hsien2; Sahu,Dipen2; Kim,Gwanjeong5 |
| 刊名 | The Astrophysical Journal Supplement Series
 |
| 出版日期 | 2020-11-23 |
| 卷号 | 251期号:2 |
| ISSN号 | 0067-0049 |
| 关键词 | Star formation Star forming regions Early stellar evolution Protostars Low mass stars Stellar jets Stellar winds Astrochemistry Stellar abundances Spectral energy distribution Dense interstellar clouds Interstellar medium |
| DOI | 10.3847/1538-4365/abba26 |
| 英文摘要 | Abstract Planck Galactic Cold Clumps (PGCCs) are considered to be the ideal targets to probe the early phases of star formation. We have conducted a survey of 72 young dense cores inside PGCCs in the Orion complex with the Atacama Large Millimeter/submillimeter Array (ALMA) at 1.3 mm (band 6) using three different configurations (resolutions ～0.″35, 1.″0, and 7.″0) to statistically investigate their evolutionary stages and substructures. We have obtained images of the 1.3 mm continuum and molecular line emission (12CO, and SiO) at an angular resolution of ～0.″35 (～140 au) with the combined arrays. We find 70 substructures within 48 detected dense cores with median dust mass ～0.093 M⊙ and deconvolved size ～0.″27. Dense substructures are clearly detected within the central 1000 au of four candidate prestellar cores. The sizes and masses of the substructures in continuum emission are found to be significantly reduced with protostellar evolution from Class 0 to Class I. We also study the evolutionary change in the outflow characteristics through the course of protostellar mass accretion. A total of 37 sources exhibit CO outflows, and 20 (>50%) show high-velocity jets in SiO. The CO velocity extents (ΔVs) span from 4 to 110 km s?1 with outflow cavity opening angle width at 400 au ranging from [Θobs]400?～?0.″6–3.″9, which corresponds to 33.°4–125.°7. For the majority of the outflow sources, the ΔVs show a positive correlation with [Θobs]400, suggesting that as protostars undergo gravitational collapse, the cavity opening of a protostellar outflow widens and the protostars possibly generate more energetic outflows. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0067-0049-251-2-ABBA26 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/62712]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Dutta,Somnath |
| 作者单位 | 1.Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile 2.Institute of Astronomy and Astrophysics, Academia Sinica, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C.; sdutta@asiaa.sinica.edu.tw 3.Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China; liutie@shao.ac.cn 4.Key Laboratory for Research in Galaxies and Cosmology, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China 5.Nobeyama Radio Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 462-2 Nobeyama, Minamimaki, Minamisaku, Nagano 384-1305, Japan 6.Department of Astronomical Science, SOKENDAI (The Graduate University for Advanced Studies), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan 7.Korea Astronomy and Space Science Institute (KASI), 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea 8.University of Science and Technology, Korea (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea 9.Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400 Austin, TX 78712-1205, USA 10.NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Rd., Victoria, BC V9E 2E7, Canada |
| 推荐引用方式 GB/T 7714 | Dutta,Somnath,Lee,Chin-Fei,Liu,Tie,et al. ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). II. Survey Overview: A First Look at 1.3 mm Continuum Maps and Molecular Outflows[J]. The Astrophysical Journal Supplement Series,2020,251(2). |
| APA | Dutta,Somnath.,Lee,Chin-Fei.,Liu,Tie.,Hirano,Naomi.,Liu,Sheng-Yuan.,...&Li,Di.(2020).ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). II. Survey Overview: A First Look at 1.3 mm Continuum Maps and Molecular Outflows.The Astrophysical Journal Supplement Series,251(2). |
| MLA | Dutta,Somnath,et al."ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). II. Survey Overview: A First Look at 1.3 mm Continuum Maps and Molecular Outflows".The Astrophysical Journal Supplement Series 251.2(2020). |
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