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On the Scarcity of Dense Cores (n > 105 cm-3) in High-latitude Planck Galactic Cold Clumps

文献类型：期刊论文

作者Xu, Fengwei12,13; Wang, Ke13; Liu, Tie11; Eden, David10; Liu, Xunchuan11; Juvela, Mika9; He JH(何金华)6,7,8; Johnstone, Doug1,5; Goldsmith, Paul4; Garay, Guido6
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2024-03-01
卷号963期号:1
ISSN号2041-8205
DOI10.3847/2041-8213/ad21e6
产权排序第6完成单位
文献子类Article
英文摘要High-latitude (divided by b divided by > 30 degrees) molecular clouds have virial parameters that exceed 1, but whether these clouds can form stars has not been studied systematically. Using JCMT SCUBA-2 archival data, we surveyed 70 fields that target high-latitude Planck Galactic cold clumps (HLPCs) to find dense cores with density of 10(5)-10(6) cm(-3) and size of <0.1 pc. The sample benefits from both the representativeness of the parent sample and its coverage of the densest clumps at the high column density end (>1 x 10(21) cm(-2)). At an average rms of 15 mJy beam(-1), we detected Galactic dense cores in only one field, G6.04+36.77 (L183) while also identifying 12 extragalactic objects and two young stellar objects. Compared to the low-latitude clumps, dense cores are scarce in HLPCs. With synthetic observations, the densities of cores are constrained to be n(c) less than or similar to 10(5) cm(-3) should they exist in HLPCs. Low-latitude clumps, Taurus clumps, and HLPCs form a sequence where a higher virial parameter corresponds to a lower dense-core detection rate. If HLPCs were affected by the Local Bubble, the scarcity should favor turbulence-inhibited rather than supernova-driven star formation. Studies of the formation mechanism of the L183 molecular cloud are warranted.
学科主题天文学
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词ISOLATED STAR-FORMATION ; ALL-SKY SURVEY ; 3D DUST MAP ; MOLECULAR CLOUDS ; DARK CLOUDS ; INITIAL CONDITIONS ; CATALOG ; SCUBA-2 ; GAS ; DISTANCES
资助项目National Key R&D Program of China[2022YFA1603102]; National Key R&D Program of China[2019YFA0405100]; National Science Foundation of China[12033005]; National Science Foundation of China[11973013]; China Manned Space Project[CMS-CSST-2021-A09]; China Manned Space Project[CMS-CSST-2021-B06]; China-Chile Joint Research Fund(CCJRF)[2211]; Chinese Academy of Sciences South America Center for Astronomy (CASSACA); National Astronomical Observatories, Chinese Academy of Sciences (NAOC); Chilean Astronomy Society (SOCHIAS); International partnership program of Chinese academy of sciences[114231KYSB20200009]; Shanghai Pujiang Program[20PJ1415500]; Ministry of Science and Technology of Taiwan[80NM0018D0004]; Jet Propulsion Laboratory; Science and Technology Facilities Council of the United Kingdom; Chinese Academy of Sciences (CAS); Canada Foundation for Innovation; NRC Canada; NSERC Discovery grant; ANID BASAL project[FB210003]; European Council, under the European Community[JP22H01271]; KAKENHI[JP23H01221]; KAKENHI[NRF-2019R1A2C1010851]; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology[348342]; Emeritus Fellowship from The Leverhulme Trust; Research Council of Finland[112-2112-M-007 -011]; NOIRLab; National Science Foundation; National Science and Technology Council (NSTC) of Taiwan
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:001176142300001
资助机构National Key R&D Program of China[2022YFA1603102, 2019YFA0405100] ; National Science Foundation of China[12033005, 11973013] ; China Manned Space Project[CMS-CSST-2021-A09, CMS-CSST-2021-B06] ; China-Chile Joint Research Fund(CCJRF)[2211] ; Chinese Academy of Sciences South America Center for Astronomy (CASSACA) ; National Astronomical Observatories, Chinese Academy of Sciences (NAOC) ; Chilean Astronomy Society (SOCHIAS) ; International partnership program of Chinese academy of sciences[114231KYSB20200009] ; Shanghai Pujiang Program[20PJ1415500] ; Ministry of Science and Technology of Taiwan[80NM0018D0004] ; Jet Propulsion Laboratory ; Science and Technology Facilities Council of the United Kingdom ; Chinese Academy of Sciences (CAS) ; Canada Foundation for Innovation ; NRC Canada ; NSERC Discovery grant ; ANID BASAL project[FB210003] ; European Council, under the European Community[JP22H01271] ; KAKENHI[JP23H01221, NRF-2019R1A2C1010851] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology[348342] ; Emeritus Fellowship from The Leverhulme Trust ; Research Council of Finland[112-2112-M-007 -011] ; NOIRLab ; National Science Foundation ; National Science and Technology Council (NSTC) of Taiwan[2017YFA0402700] ; [742719] ; [NSTC 111-2112-M-001-060]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26559]  
专题云南天文台_其他
作者单位1.Department of Physics and Astronomy, University of Victoria, 3800 Finnerty Road, Elliot Building, Victoria, BC, V8P 5C2, Canada;
2.Institute of Physics and Astronomy, Eötvös Lorànd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
3.Indian Institute of Astrophysics, II Block, Koramangala, Bengaluru 560034, India;
4.Jet Propulsion Laboratory, California Institute of Technology, Pasadena CA 91109, USA;
5.NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC, V9E 2E7, Canada;
6.Departamento de Astronomía, Universidad de Chile, Las Condes, 7591245 Santiago, Chile;
7.Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, CAS, Beijing 100101, People's Republic of China;
8.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People's Republic of China;
9.Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland;
10.Armagh Observatory and Planetarium, College Hill, Armagh, BT61 9DB, UK;
推荐引用方式
GB/T 7714		 Xu, Fengwei,Wang, Ke,Liu, Tie,et al. On the Scarcity of Dense Cores (n > 105 cm-3) in High-latitude Planck Galactic Cold Clumps[J]. ASTROPHYSICAL JOURNAL LETTERS,2024,963(1).
APA Xu, Fengwei.,Wang, Ke.,Liu, Tie.,Eden, David.,Liu, Xunchuan.,...&Tóth, L. Viktor.(2024).On the Scarcity of Dense Cores (n > 105 cm-3) in High-latitude Planck Galactic Cold Clumps.ASTROPHYSICAL JOURNAL LETTERS,963(1).
MLA Xu, Fengwei,et al."On the Scarcity of Dense Cores (n > 105 cm-3) in High-latitude Planck Galactic Cold Clumps".ASTROPHYSICAL JOURNAL LETTERS 963.1(2024).

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