HII regions and high-mass starless clump candidates: I. Catalogs and properties
文献类型：期刊论文
| 作者 | Zhang, S.9; Zavagno, A.1,9; Yuan, J.2; Liu, H.3,4; Figueira, M.5; Russeil, D.9; Schuller, F.6; Marsh, K. A.7; Wu, Y.8 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2020-05-12 |
| 卷号 | 637页码:26 |
| ISSN号 | 0004-6361 |
| 关键词 | stars: formation HII regions submillimeter: ISM |
| DOI | 10.1051/0004-6361/201936792 |
| 英文摘要 | Context. The role of ionization feedback on high-mass (>8 M-circle dot) star formation is still highly debated. Questions remain concerning the presence of nearby HII regions changes the properties of early high-mass star formation and whether HII regions promote or inhibit the formation of high-mass stars.Aims. To characterize the role of HII regions on the formation of high-mass stars, we study the properties of a sample of candidates high-mass starless clumps (HMSCs), of which about 90% have masses larger than 100 M-circle dot. These high-mass objects probably represent the earliest stages of high-mass star formation; we search if (and how) their properties are modified by the presence of an HII region.Methods. We took advantage of the recently published catalog of HMSC candidates. By cross matching the HMSCs and HII regions, we classified HMSCs into three categories: (1) the HMSCs associated with HII regions both in the position in the projected plane of the sky and in velocity; (2) HMSCs associated in the plane of the sky, but not in velocity; and (3) HMSCs far away from any HII regions in the projected sky plane. We carried out comparisons between associated and nonassociated HMSCs based on statistical analyses of multiwavelength data from infrared to radio.Results. We show that there are systematic differences of the properties of HMSCs in different environments. Statistical analyses suggest that HMSCs associated with HII regions are warmer, more luminous, more centrally-peaked and turbulent. We also clearly show, for the first time, that the ratio of bolometric luminosity to envelope mass of HMSCs (L/M) could not be a reliable evolutionary probe for early massive star formation due to the external heating effects of the HII regions.Conclusions. We show HMSCs associated with HII regions present statistically significant differences from HMSCs far away from HII regions, especially for dust temperature and L/M. More centrally peaked and turbulent properties of HMSCs associated with HII regions may promote the formation of high-mass stars by limiting fragmentation. High-resolution interferometric surveys toward HMSCs are crucial to reveal how HII regions impact the star formation process inside HMSCs. |
| WOS关键词 | INFRARED DARK CLOUDS ; GALACTIC PLANE ; MOLECULAR CLOUD ; MILKY-WAY ; COLUMN-DENSITY ; TURBULENCE ; INNER ; GAL ; EVOLUTION ; ATLASGAL |
| 资助项目 | Institut Universitaire de France ; Atacama Pathfinder EXperiment (APEX)[092.F-9315(A)] ; Atacama Pathfinder EXperiment (APEX)[193.C0584(A)] ; ASI (Agenzia Spaziale Italiana)[I/038/080/0] ; ASI (Agenzia Spaziale Italiana)[I/029/12/0] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000534337300003 |
| 资助机构 | Institut Universitaire de France ; Institut Universitaire de France ; Atacama Pathfinder EXperiment (APEX) ; Atacama Pathfinder EXperiment (APEX) ; ASI (Agenzia Spaziale Italiana) ; ASI (Agenzia Spaziale Italiana) ; Institut Universitaire de France ; Institut Universitaire de France ; Atacama Pathfinder EXperiment (APEX) ; Atacama Pathfinder EXperiment (APEX) ; ASI (Agenzia Spaziale Italiana) ; ASI (Agenzia Spaziale Italiana) ; Institut Universitaire de France ; Institut Universitaire de France ; Atacama Pathfinder EXperiment (APEX) ; Atacama Pathfinder EXperiment (APEX) ; ASI (Agenzia Spaziale Italiana) ; ASI (Agenzia Spaziale Italiana) ; Institut Universitaire de France ; Institut Universitaire de France ; Atacama Pathfinder EXperiment (APEX) ; Atacama Pathfinder EXperiment (APEX) ; ASI (Agenzia Spaziale Italiana) ; ASI (Agenzia Spaziale Italiana) |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54717]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Zhang, S. |
| 作者单位 | 1.Inst Univ France IUF, Paris, France 2.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 3.CASSACA, China Chile Joint Ctr Astron, Camino Observ 1515, Santiago, Chile 4.Univ Concepcion, Dept Astron, Av Esteban Iturra S-N,160-C, Concepcion, Chile 5.Natl Ctr Nucl Res, Ul Pasteura 7, PL-02093 Warsaw, Poland 6.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 7.CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 USA 8.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 9.Aix Marseille Univ, LAM, CNES, CNRS, Marseille, France |
| 推荐引用方式 GB/T 7714 | Zhang, S.,Zavagno, A.,Yuan, J.,et al. HII regions and high-mass starless clump candidates: I. Catalogs and properties[J]. ASTRONOMY & ASTROPHYSICS,2020,637:26. |
| APA | Zhang, S..,Zavagno, A..,Yuan, J..,Liu, H..,Figueira, M..,...&Wu, Y..(2020).HII regions and high-mass starless clump candidates: I. Catalogs and properties.ASTRONOMY & ASTROPHYSICS,637,26. |
| MLA | Zhang, S.,et al."HII regions and high-mass starless clump candidates: I. Catalogs and properties".ASTRONOMY & ASTROPHYSICS 637(2020):26. |
入库方式： OAI收割
来源：国家天文台
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