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, Fengwei36,37; Wang, Ke37; Liu, Tie35; Eden, David34; Liu, Xunchuan35; Juvela, Mika33; He, Jinhua30,31,32; Johnstone, Doug28,29; Goldsmith, Paul27; Garay, Guido30 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 963期号:1页码:L9 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ad21e6 |
| 产权排序 | 37 |
| 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. |
| 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 RAMP ; D Program of China[2022YFA1603102] ; National Key RAMP ; 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[2017YFA0402700] ; [742719] ; [NSTC 111-2112-M-001-060] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001176142300001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key RAMP ; D Program of China ; National Science Foundation of China ; China Manned Space Project ; China-Chile Joint Research Fund(CCJRF) ; 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 ; Shanghai Pujiang Program ; Ministry of Science and Technology of Taiwan ; 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 ; European Council, under the European Community ; KAKENHI ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology ; Emeritus Fellowship from The Leverhulme Trust ; Research Council of Finland ; NOIRLab ; National Science Foundation ; National Science and Technology Council (NSTC) of Taiwan |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5943]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Wang, Ke |
| 作者单位 | 1.IAPS INAF, Via Fosso del Cavaliere 100, I-00133 Rome, Italy 2.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 4.Chinese Acad Sci, XingJiang Astron Observ, Urumqi 830011, Peoples R China 5.Guizhou Univ, Guizhou Radio Astron Observ, Guiyang 550000, Peoples R China 6.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 7.Natl Inst Nat Sci, Nobeyama Radio Observ, Natl Astron Observ Japan, 462-2 Nobeyama, Minamimaki, Nagano 3841305, Japan 8.Univ Sci & Technol Korea UST, 217 Gajeong Ro, Daejeon 34113, South Korea 9.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea 10.Chinese Acad Sci, Natl Astron Observ, Datun Rd A20, Beijing, Peoples R China |
| 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):L9. |
| APA | Xu, Fengwei.,Wang, Ke.,Liu, Tie.,Eden, David.,Liu, Xunchuan.,...&Toth, 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),L9. |
| 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):L9. |
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