中国科学院机构知识库网格系统: Planck Cold Clumps in the lambda Orionis Complex. II. Environmental Effects on Core Formation

Planck Cold Clumps in the lambda Orionis Complex. II. Environmental Effects on Core Formation

文献类型：期刊论文


作者	Yi, Hee-Weon 1; Lee, Jeong-Eun 1; Liu, Tie 2,17; Kim, Kee-Tae 2; Choi, Minho 2; Eden, David 3; Evans, Neal J., II 2,4,5; Di Francesco, James 6,7; Fuller, Gary 8; Hirano, N.9
刊名	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期	2018-06-01
卷号	236 期号:2 页码:23
ISSN号	0067-0049
关键词	ISM: clouds stars: formation submillimeter: ISM
DOI	10.3847/1538-4365/aac2e0
英文摘要	Based on the 850 mu m dust continuum data from SCUBA-2 at James Clerk Maxwell Telescope (JCMT), we compare overall properties of Planck Galactic Cold Clumps (PGCCs) in the lambda Orionis cloud to those of PGCCs in the Orion A and B clouds. The Orion A and B clouds are well-known active star-forming regions, while the A Orionis cloud has a different environment as a consequence of the interaction with a prominent OB association and a giant H-II region. PGCCs in the lambda Orionis cloud have higher dust temperatures (T-d = 16.13 +/- 0.15 K) and lower values of dust emissivity spectral index (beta = 1.65 +/- 0.02) than PGCCs in the Orion A (T-d = 13.79 +/- 0.21 K, beta = 2.07 +/- 0.03) and Orion B (T-d = 13.82 +/- 0.19 K, beta =1.96 +/- 0.02) clouds. We find 119 substructures within the 40 detected PGCCs and identify them as cores. Out of a total of 119 cores, 15 cores are discovered in the lambda Orionis cloud, while 74 and 30 cores are found in the Orion A and B clouds, respectively. The cores in the lambda Orionis cloud show much lower mean values of size R = 0.08 pc, column density N(H-2) (9.5 +/- 1.2) x 10(22)cm(-2) , number density n(H-2) - (2.9 +/- 0.4) x 10 5 CM -3 , and mass M-core = 1.0 +/- 0.3 M(circle dot)compared to the cores in the Orion A [R = 0.11 pc, N(H-2) = (2.3 +/- 0.3) x 10(23) cm(-2), n(H-2) = (3.8 +/- 0.5) x 10(5)cm(-3) , and M-core = 2.4 +/- 0.3 M-circle dot] and Orion B [R = 0.16 pc, N(H-2) (3.8 +/- 0.4) x 10(23) cm(-2), n(H-2) = (15.6 +/- 1.8) x 10(5) cm(-3) , and M-core = 2.7 +/- 0.3 M-circle dot] clouds. These core properties in the A Orionis cloud can be attributed to the photodissociation and external heating by the nearby H rr region, which may prevent the PGCCs from forming gravitationally bound structures and eventually disperse them. These results support the idea of negative stellar feedback on core formation.
WOS关键词	YOUNG STELLAR OBJECTS ; STAR-FORMATION ; MOLECULAR CLOUDS ; NEBULA-CLUSTER ; DARK CLOUDS ; POPULATION ; EVOLUTION ; DISTANCE
资助项目	Basic Science Research Program through the National Research Foundation of Korea (NRF)[NRF-2018R1A2B6003423] ; Korea Astronomy and Space Science Institute under the RD program ; BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea ; KASI fellowship ; EACOA fellowship ; Basic Science Research Program though the National Research Foundation of Korea (NRF) - Ministry of Education, Science, and Technology[NRF-2016R1A2B4012593] ; Japan Society for the Promotion of Science (JSPS)[18H01259] ; OTKA grant[NN-111016] ; NSFC[11725313] ; National Key R&D Program of China[2017YFA0402700] ; Science and Technology Facilities Council of the United Kingdom
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000435939200003
资助机构	Basic Science Research Program through the National Research Foundation of Korea (NRF) ; Korea Astronomy and Space Science Institute under the RD program ; BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea ; KASI fellowship ; EACOA fellowship ; Basic Science Research Program though the National Research Foundation of Korea (NRF) - Ministry of Education, Science, and Technology ; Japan Society for the Promotion of Science (JSPS) ; OTKA grant ; NSFC ; National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom ; Basic Science Research Program through the National Research Foundation of Korea (NRF) ; Korea Astronomy and Space Science Institute under the RD program ; BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea ; KASI fellowship ; EACOA fellowship ; Basic Science Research Program though the National Research Foundation of Korea (NRF) - Ministry of Education, Science, and Technology ; Japan Society for the Promotion of Science (JSPS) ; OTKA grant ; NSFC ; National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom ; Basic Science Research Program through the National Research Foundation of Korea (NRF) ; Korea Astronomy and Space Science Institute under the RD program ; BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea ; KASI fellowship ; EACOA fellowship ; Basic Science Research Program though the National Research Foundation of Korea (NRF) - Ministry of Education, Science, and Technology ; Japan Society for the Promotion of Science (JSPS) ; OTKA grant ; NSFC ; National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom ; Basic Science Research Program through the National Research Foundation of Korea (NRF) ; Korea Astronomy and Space Science Institute under the RD program ; BK21 plus program through the National Research Foundation (NRF) - Ministry of Education of Korea ; KASI fellowship ; EACOA fellowship ; Basic Science Research Program though the National Research Foundation of Korea (NRF) - Ministry of Education, Science, and Technology ; Japan Society for the Promotion of Science (JSPS) ; OTKA grant ; NSFC ; National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom
源URL	[http://ir.bao.ac.cn/handle/114a11/21942]
专题	中国科学院国家天文台
通讯作者	Yi, Hee-Weon
作者单位	1.Kyung Hee Univ, Sch Space Res, 1732 Deogyeong Daero, Yongin 17104, Gyeonggi Do, South Korea 2.Korea Astron & Space Sci Inst, 776 Daedeokdaero, Daejeon 34055, South Korea 3.Liverpool John Moores Univ, Astrophys Res Inst, IC2, Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England 4.Univ Texas Austin, Dept Astron, 2515 Speedway,Stop C1400, Austin, TX 78712 USA 5.Kyung Hee Univ, Humanitas Coll, Global Campus, Yongin 17104, South Korea 6.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada 7.Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 1A1, Canada 8.Univ Manchester, UK ALMA Reg Ctr Node, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Oxford Rd, Manchester M13 9PL, Lancs, England 9.Acad Sinica, Inst Astron & Astrophys, 11F Astron Math Bldg,AS NTU 1,Sec 4,Roosevelt Rd, Taipei 10617, Taiwan 10.Univ Helsinki, Dept Phys, POB 64, FI-00014 Helsinki, Finland
推荐引用方式 GB/T 7714	Yi, Hee-Weon,Lee, Jeong-Eun,Liu, Tie,et al. Planck Cold Clumps in the lambda Orionis Complex. II. Environmental Effects on Core Formation[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2018,236(2):23.
APA	Yi, Hee-Weon.,Lee, Jeong-Eun.,Liu, Tie.,Kim, Kee-Tae.,Choi, Minho.,...&Yang, Yao-Lun.(2018).Planck Cold Clumps in the lambda Orionis Complex. II. Environmental Effects on Core Formation.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,236(2),23.
MLA	Yi, Hee-Weon,et al."Planck Cold Clumps in the lambda Orionis Complex. II. Environmental Effects on Core Formation".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 236.2(2018):23.

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Planck Cold Clumps in the lambda Orionis Complex. II. Environmental Effects on Core Formation

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