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| JCMT BISTRO Survey: Magnetic Fields within the Hub-filament Structure in IC 5146 | |
Wang, Jia-Wei1,2; Lai, Shih-Ping1,2; Eswaraiah, Chakali1,2,3; Pattle, Kate1,2; Di Francesco, James4,5; Johnstone, Doug4,5; Koch, Patrick M.6; Liu, Tie7,8; Tamura, Motohide9,10,11; Furuya, Ray S.12,13; Onaka, Takashi10; Ward-Thompson, Derek14; Soam, Archana7,15; Kim, Kee-Tae7; Lee, Chang Won7,16; Lee, Chin-Fei6; Mairs, Steve8; Arzoumanian, Doris17; Kim, Gwanjeong18; Hoang, Thiem7,16; Hwang, Jihye7,16; Liu, Sheng-Yuan6; Berry, David8; Bastien, Pierre19,20; Hasegawa, Tetsuo9; Kwon, Woojin7,16; Qiu, Keping21,22; Andre, Philippe23; Aso, Yusuke10; Byun, Do-Young7,16; Chen, Huei-Ru1,2,6; Chen, Michael C.5; Chen, Wen Ping24; Ching, Tao-Chung3,25; Cho, Jungyeon26; Choi, Minho7; Chrysostomou, Antonio27; Chung, Eun Jung7; Coude, Simon28; Doi, Yasuo29; Dowell, C. Darren30; Drabek-Maunder, Emily31; Duan, Hao-Yuan1,2; Eyres, Stewart P. S.14; Falle, Sam32; Fanciullo, Lapo6; Fiege, Jason33; Franzmann, Erica33; Friberg, Per8; Friesen, Rachel K.34; Fuller, Gary35; Gledhill, Tim27; Graves, Sarah F.8; Greaves, Jane S.31; Griffin, Matt J.31; Gu, Qilao36; Han, Ilseung7,16; Hatchell, Jennifer37; Hayashi, Saeko S.38; Holland, Wayne39,40; Houde, Martin41; Inoue, Tsuyoshi17; Inutsuka, Shu-ichiro17; Iwasaki, Kazunari42; Jeong, Il-Gyo7; Kanamori, Yoshihiro29; Kang, Ji-hyun7; Kang, Miju7; Kang, Sung-ju7; Kataoka, Akimasa43; Kawabata, Koji S.44,45,46; Kemper, Francisca6; Kim, Jongsoo7,16; Kim, Kyoung Hee47; Kim, Mi-Ryang7; Kim, Shinyoung7,16; Kirk, Jason M.14; Kobayashi, Masato I. N.48; Konyves, Vera14; Kwon, Jungmi10; Lacaille, Kevin M.49,50; Lee, Hyeseung26; Lee, Jeong-Eun51; Lee, Sang-Sung7,16; Lee, Yong-Hee51; Li, Dalei52 ; Li, Di3,53; Li, Hua-bai36; Liu, Hong-Li54; Liu, Junhao21,22; Lyo, A-Ran7; Matsumura, Masafumi55,56; Matthews, Brenda C.4,5; Moriarty-Schieven, Gerald H.4; Nagata, Tetsuya57; Nakamura, Fumitaka43,58; Nakanishi, Hiroyuki59; Ohashi, Nagayoshi38; Park, Geumsook7; Parsons, Harriet8; Pascale, Enzo31; Peretto, Nicolas31; Pon, Andy41; Pyo, Tae-Soo38,58; Qian, Lei3; Rao, Ramprasad6; Rawlings, Mark G.8; Retter, Brendan31; Richer, John60,61; Rigby, Andrew31; Robitaille, Jean-Francois62; Sadavoy, Sarah63; Saito, Hiro64; Savini, Giorgio65; Scaife, Anna M. M.35; Seta, Masumichi66; Shinnaga, Hiroko59; Tang, Ya-Wen6; Tomisaka, Kohji43,58; Tsukamoto, Yusuke59; Van Loo, Sven67; Wang, Hongchi68; Whitworth, Anthony P.31; Yen, Hsi-Wei6; Yoo, Hyunju7; Yuan, Jinghua25; Yun, Hyeong-Sik51; Zenko, Tetsuya57; Zhang, Chuan-Peng25; Zhang, Guoyin3; Zhang, Ya-Peng36; Zhou, Jianjun52; Zhu, Lei3
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| 2019-05-01 | |
| Source Publication | ASTROPHYSICAL JOURNAL
 |
| ISSN | 0004-637X |
| Volume | 876Issue:1Pages:42 |
| Contribution Rank | 50 |
| Abstract | We present the 850 mu m polarization observations toward the IC 5146 filamentary cloud taken using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) and its associated polarimeter (POL-2), mounted on the James Clerk Maxwell Telescope, as part of the B-fields In STar forming Regions Observations. This work is aimed at revealing the magnetic field morphology within a core-scale (less than or similar to 1.0 pc) hub-filament structure (HFS) located at the end of a parsec-scale filament. To investigate whether the observed polarization traces the magnetic field in the HFS, we analyze the dependence between the observed polarization fraction and total intensity using a Bayesian approach with the polarization fraction described by the Rice likelihood function, which can correctly describe the probability density function of the observed polarization fraction for low signal-to-noise ratio data. We find a power-law dependence between the polarization fraction and total intensity with an index of 0.56 in A(v) similar to 20-300 mag regions, suggesting that the dust grains in these dense regions can still be aligned with magnetic fields in the IC 5146 regions. Our polarization maps reveal a curved magnetic field, possibly dragged by the contraction along the parsec-scale filament. We further obtain a magnetic field strength of 0.5 +/- 0.2 mG toward the central hub using the Davis-Chandrasekhar-Fermi method, corresponding to a mass-to-flux criticality of similar to 1.3 +/- 0.4 and an Alfvenic Mach number of <0.6. These results suggest that gravity and magnetic field are currently of comparable importance in the HFS and that turbulence is less important. |
| Keyword | ISM: individual objects (IC 5146) ISM: magnetic fields ISM: structure polarization radio continuum: ISM stars: formation |
| DOI | 10.3847/1538-4357/ab13a2 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | GOULD BELT SURVEY ; LINEAR-POLARIZATION ; INFRARED POLARIMETRY ; INTERSTELLAR CLOUDS ; RADIATIVE TORQUES ; MOLECULAR CLOUDS ; GRAIN ALIGNMENT ; STAR-FORMATION ; SCUBA-2 ; CONTAMINATION |
| Funding Project | Science and Technology Facilities Council of the United Kingdom ; Ministry of Finance (MOF) of China ; National Key R&D Program of China[2017YFA0402700] ; Canada Foundation for Innovation ; East Asian Observatory, JCMT Project[M16AL004] ; Ministry of Science and Technology (MOST) of Taiwan[MOST 105-2119-M-007-021-MY3] ; Ministry of Science and Technology (MOST) of Taiwan[105-2119-M-007-024] ; Ministry of Science and Technology (MOST) of Taiwan[106-2119-M-007-021-MY3] ; MOST of Taiwan[MOST 105-2119-M-007-022-MY3] ; National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning[NRF-2015R1C1A1A01052160] ; NRF - Ministry of Education, Science and Technology[NRF-2016R1A2B4012593] ; NRF[NRF-2016R1C1B2013642] ; National Research Council of Canada ; NSERC Discovery Grant |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000466800100004 |
| Publisher | IOP PUBLISHING LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/2655 |
| Collection | 射电天文研究室_恒星形成与演化研究团组 |
| Corresponding Author | Wang, Jia-Wei |
| Affiliation | 1.Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan 2.Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan 3.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing, Peoples R China 4.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada 5.Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada 6.Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan 7.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea 8.East Asian Observ, 660 N Aohoku Pl, Hilo, HI 96720 USA 9.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan 10.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan 11.Natl Inst Nat Sci, Astrobiol Ctr, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 12.Tokushima Univ, Minami Jousanajima Machi 1-1, Tokushima 7708502, Japan 13.Tokushima Univ, Inst Liberal Arts & Sci, Minami Jousanajima Machi 1-1, Tokushima 7708502, Japan 14.Univ 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China 37.Univ Exeter, Phys & Astron, Stocker Rd, Exeter EX4 4QL, Devon, England 38.Natl Astron Observ Japan, Subaru Telescope, 650 N Aohoku Pl, Hilo, HI 96720 USA 39.Royal Observ, UK Astron Technol Ctr, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland 40.Univ Edinburgh, Inst Astron, Royal Observ, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland 41.Univ Western Ontario, Dept Phys & Astron, 1151 Richmond St, London, ON N6A 3K7, Canada 42.Doshisha Univ, Dept Environm Syst Sci, Miyakodani 1-3, Kyoto 6100394, Japan 43.Natl Astron Observ Japan, Div Theoret Astron, Mitaka, Tokyo 1818588, Japan 44.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Kagamiyama 1-3-1, Hiroshima 7398526, Japan 45.Hiroshima Univ, Dept Phys, Kagamiyama 1-3-1, Hiroshima 7398526, Japan 46.Hiroshima Univ, Core Res Energet Universe CORE U, Kagamiyama 1-3-1, Hiroshima 7398526, Japan 47.Korea Natl Univ Educ, Dept Earth Sci Educ, 250 Taeseongtabyeon Ro, Cheongju 28173, Chungbuk, South Korea 48.Osaka Univ, Grad Sch 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England 61.Univ Cambridge, Kavli Inst Cosmol, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England 62.Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France 63.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA 64.Tokyo Gakugei Univ, Dept Astron & Earth Sci, Koganei, Tokyo 1848501, Japan 65.UCL, Dept Phys & Astron, OSL, London WC1E 6BT, England 66.Kwansei Gakuin Univ, Sch Sci & Technol, Dept Phys, 2-1 Gakuen, Sanda, Hyogo 6691337, Japan 67.Univ Leeds, Sch Phys & Astron, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England 68.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Jia-Wei,Lai, Shih-Ping,Eswaraiah, Chakali,et al. JCMT BISTRO Survey: Magnetic Fields within the Hub-filament Structure in IC 5146[J]. ASTROPHYSICAL JOURNAL,2019,876(1):42. |
| APA | Wang, Jia-Wei.,Lai, Shih-Ping.,Eswaraiah, Chakali.,Pattle, Kate.,Di Francesco, James.,...&Zhu, Lei.(2019).JCMT BISTRO Survey: Magnetic Fields within the Hub-filament Structure in IC 5146.ASTROPHYSICAL JOURNAL,876(1),42. |
| MLA | Wang, Jia-Wei,et al."JCMT BISTRO Survey: Magnetic Fields within the Hub-filament Structure in IC 5146".ASTROPHYSICAL JOURNAL 876.1(2019):42. |
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