NAOC Open IR
TRAO Survey of the Nearby Filamentary Molecular Clouds, the Universal Nursery of Stars (TRAO FUNS). II. Filaments and Dense Cores in IC 5146
Chung, Eun Jung1,2; Lee, Chang Won2,3; Kim, Shinyoung2,3; Gopinathan, Maheswar4; Tafalla, Mario5; Caselli, Paola6; Myers, Philip C.7; Liu, Tie8; Yoo, Hyunju2; Kim, Kyoung Hee2; Kim, Mi-Ryang2; Soam, Archana9; Cho, Jungyeon1; Kwon, Woojin10,11; Lee, Changhoon2; Kang, Hyunwoo2
2021-09-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume919Issue:1Pages:32
AbstractWe present the results on the physical properties of filaments and dense cores in IC 5146, as a part of the TRAO FUNS project. We carried out on-the-fly mapping observations using the Taeduk Radio Astronomy Observatory (TRAO) 14 m telescope covering about 1 square degree of the area of IC 5146 using various molecular lines. We identified 14 filaments (24 in total, including sub-filaments) from the (CO)-O-18 (1-0) data cube and 22 dense cores from the N2H+ (1-0) data. We examined the filaments' gravitational criticality, turbulence properties, accretion rate from filaments to dense cores, and relative evolutionary stages of cores. Most filaments in IC 5146 are gravitationally supercritical within the uncertainty, and most dense cores are formed in them. We found that dense cores in the hubs show a systemic velocity shift of similar to 0.3 km s(-1) between the N2H+ and (CO)-O-18 gas. Besides, these cores are subsonic or transonic, while the surrounding filament gas is transonic or supersonic, indicating that the cores in the hubs are likely formed by the dissipation of turbulence in the colliding turbulent filaments and the merging is still ongoing. We estimated a mass accretion rate of 15-35 M (circle dot) Myr(-1) from the filaments to the dense cores, and the required timescales to collect the current core mass are consistent with the lifetime of the dense cores. The structures of filaments and dense cores in the hub can form from a collision of turbulent converging flows, and mass flow along the filaments to the dense cores may play an important role in forming dense cores.
Funding OrganizationNational Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF
DOI10.3847/1538-4357/ac0881
WOS KeywordPERSISTENT COSMIC WEB ; GOULD BELT SURVEY ; STARLESS CORES ; MAGNETIC-FIELDS ; FORMING COMPLEX ; INFALL MOTIONS ; DARK CLOUDS ; CS 2-1 ; GAS ; N2H+
Language英语
Funding ProjectNational Research Foundation of Korea (NRF) - Korea government (MSIT)[NRF-2019R1I1A1A01042480] ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology[NRF2019R1A2C1010851] ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT)[WISET-2019-288] ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT)[WISET2020-247] ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT)[WISET-2021-080] ; NSF[AST-1715876]
Funding OrganizationNational Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; center for Women In Science, Engineering and Technology (WISET) - Ministry of Science and ICT (MSIT) ; NSF ; NSF
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000696374300001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75622
Collection中国科学院国家天文台
Corresponding AuthorChung, Eun Jung
Affiliation1.Chungnam Natl Univ, Dept Astron & Space Sci, 99 Daehak Ro, Daejeon 34134, South Korea
2.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea
3.Univ Sci & Technol, Korea UST, 217 Gajeong Ro, Daejeon 34113, South Korea
4.Indian Inst Astrophys, Kormangala IIA, Bangalore 560034, Karnataka, India
5.Observ Astron Nacl IGN, Alfonso XII 3, E-28014 Madrid, Spain
6.Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany
7.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
8.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
9.NASA, SOFIA Sci Ctr, USRA, Ames Res Ctr, MS-12,N232, Moffett Field, CA 94035 USA
10.Seoul Natl Univ, Dept Earth Sci Educ, 1 Gwanak Ro, Seoul 08826, South Korea
11.Seoul Natl Univ, SNU Astron Res Ctr, 1 Gwanak Ro, Seoul 08826, South Korea
Recommended Citation
GB/T 7714
Chung, Eun Jung,Lee, Chang Won,Kim, Shinyoung,et al. TRAO Survey of the Nearby Filamentary Molecular Clouds, the Universal Nursery of Stars (TRAO FUNS). II. Filaments and Dense Cores in IC 5146[J]. ASTROPHYSICAL JOURNAL,2021,919(1):32.
APA Chung, Eun Jung.,Lee, Chang Won.,Kim, Shinyoung.,Gopinathan, Maheswar.,Tafalla, Mario.,...&Kang, Hyunwoo.(2021).TRAO Survey of the Nearby Filamentary Molecular Clouds, the Universal Nursery of Stars (TRAO FUNS). II. Filaments and Dense Cores in IC 5146.ASTROPHYSICAL JOURNAL,919(1),32.
MLA Chung, Eun Jung,et al."TRAO Survey of the Nearby Filamentary Molecular Clouds, the Universal Nursery of Stars (TRAO FUNS). II. Filaments and Dense Cores in IC 5146".ASTROPHYSICAL JOURNAL 919.1(2021):32.
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