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The JCMT BISTRO Survey: The Magnetic Field in the Starless Core rho Ophiuchus C
Liu, Junhao1,2,3; Qiu, Keping1,2; Berry, David4; Di Francesco, James5,6; Bastien, Pierre7,8; Koch, Patrick M.9; Furuya, Ray S.10,11; Kim, Kee-Tae12; Coude, Simon8,13; Lee, Chang Won12,14; Soam, Archana12,13; Eswaraiah, Chakali15,16; Li, Di17,18; Hwang, Jihye12,14; Lyo, A-Ran12,14; Pattle, Kate15,16; Hasegawa, Tetsuo20; Kwon, Woojin12,14; Lai, Shih-Ping9,15,16; Ward-Thompson, Derek21; Ching, Tao-Chung17,19; Chen, Zhiwei22; Gu, Qilao23; Li, Dalei24; Li, Hua-bai23; Liu, Hong-Li23; Qian, Lei17; Wang, Hongchi22; Yuan, Jinghua19; Zhang, Chuan-Peng17,19; Zhang, Guoyin17; Zhang, Ya-Peng23; Zhou, Jianjun24; Zhu, Lei17; Andre, Philippe25; Arzoumanian, Doris26; Aso, Yusuke27; Byun, Do-Young12,14; Chen, Michael Chun-Yuan6; Chen, Huei-Ru Vivien15,16; Chen, Wen Ping28; Cho, Jungyeon29; Choi, Minho12; Chrysostomou, Antonio30; Chung, Eun Jung12; Doi, Yasuo31; Drabek-Maunder, Emily32; Dowell, C. Darren33; Eyres, Stewart P. S.21; Falle, Sam34; Fanciullo, Lapo9; Fiege, Jason35; Franzmann, Erica35; Friberg, Per4; Friesen, Rachel K.36; Fuller, Gary37; Gledhill, Tim30; Graves, Sarah F.4; Greaves, Jane S.32; Griffin, Matt J.32; Han, Ilseung12,14; Hatchell, Jennifer38; Hayashi, Saeko S.39; Hoang, Thiem12,14; Holland, Wayne40,41; Houde, Martin42; Inoue, Tsuyoshi26; Inutsuka, Shu-ichiro26; Iwasaki, Kazunari43; Jeong, Il-Gyo12; Johnstone, Doug5,6; Kanamori, Yoshihiro31; Kang, Ji-hyun12; Kang, Miju12; Kang, Sung-ju12; Kataoka, Akimasa44; Kawabata, Koji S.45,46,47; Kemper, Francisca9; Kim, Gwanjeong12,14,48; Kim, Jongsoo12,14; Kim, Kyoung Hee49; Kim, Mi-Ryang12; Kim, Shinyoung12,14; Kirk, Jason M.21; Kobayashi, Masato I. N.26; Kusune, Takayoshi26; Kwon, Jungmi50; Lacaille, Kevin M.51,52; Lee, Chin-Fei9,53; Lee, Jeong-Eun54; Lee, Hyeseung29; Lee, Sang-Sung12,14; Liu, Sheng-Yuan9; Liu, Tie4,12; van Loo, Sven55; Mairs, Steve4; Matsumura, Masafumi56; Matthews, Brenda C.5,6; Moriarty-Schieven, Gerald H.5; Nagata, Tetsuya57; Nakamura, Fumitaka44,58; Nakanishi, Hiroyuki59; Ohashi, Nagayoshi39; Onaka, Takashi27; Parker, Josh21; Parsons, Harriet4; Pascale, Enzo32; Peretto, Nicolas32; Pon, Andy42; Pyo, Tae-Soo39,58; Rao, Ramprasad9; Rawlings, Mark G.4; Retter, Brendan32; Richer, John60,61; Rigby, Andrew32; Robitaille, Jean-Francois37; Sadavoy, Sarah3; Saito, Hiro62; Savini, Giorgio63; Scaife, Anna M. M.37; Seta, Masumichi64; Shinnaga, Hiroko59; Tamura, Motohide20,27,65; Tang, Ya-Wen9; Tomisaka, Kohji44,58; Tsukamoto, Yusuke59; Wang, Jia-Wei15,16; Whitworth, Anthony P.32; Yen, Hsi-Wei9,66; Yoo, Hyunju12; Zenko, Tetsuya57
2019-05-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume877Issue:1Pages:17
Corresponding AuthorQiu, Keping(kpqiu@nju.edu.cn)
AbstractWe report 850 mu m dust polarization observations of a low-mass (similar to 12 M-circle dot) starless core in the rho Ophiuchus cloud, Ophiuchus C, made with the POL-2 instrument on the James Clerk Maxwell Telescope (JCMT) as part of the JCMT B-fields In STar-forming Region Observations survey. We detect an ordered magnetic field projected on the plane of the sky in the starless core. The magnetic field across the similar to 0.1 pc core shows a predominant northeast-southwest orientation centering between similar to 40 degrees and similar to 100 degrees, indicating that the field in the core is well aligned with the magnetic field in lower-density regions of the cloud probed by near-infrared observations and also the cloud-scale magnetic field traced by Planck observations. The polarization percentage (P) decreases with increasing total intensity (I), with a power-law index of -1.03 +/- 0.05. We estimate the plane-of-sky field strength (B-pos) using modified Davis-Chandrasekhar-Fermi methods based on structure function (SF), autocorrelation function (ACF), and unsharp masking (UM) analyses. We find that the estimates from the SF, ACF, and UM methods yield strengths of 103 +/- 46 mu G, 136 +/- 69 mu G, and 213 +/- 115 mu G, respectively. Our calculations suggest that the Ophiuchus C core is near magnetically critical or slightly magnetically supercritical (i.e., unstable to collapse). The total magnetic energy calculated from the SF method is comparable to the turbulent energy in Ophiuchus C, while the ACF method and the UM method only set upper limits for the total magnetic energy because of large uncertainties.
KeywordISM: individual objects (Ophiuchus) magnetic fields polarization stars: formation
DOI10.3847/1538-4357/ab0958
WOS KeywordMOLECULAR CLOUD CORES ; GOULD BELT SURVEY ; MAIN CLOUD ; IMAGING POLARIMETRY ; INITIAL CONDITIONS ; FORMING REGIONS ; DUST OPACITIES ; SCUBA-2 ; PROTOSTARS ; EMISSION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000468874600011
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27002
Collection中国科学院紫金山天文台
Corresponding AuthorQiu, Keping
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Jiangsu, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Jiangsu, Peoples R China
3.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
4.East Asian Observ, 660 N Ohoka Pl,Univ Pk, Hilo, HI 96720 USA
5.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada
6.Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 1A1, Canada
7.Univ Montreal, Dept Phys, Inst Rech Exoplanetes iREx, CP 6128 Succ Ctr Ville, Montreal, PQ H3C 3J7, Canada
8.Univ Montreal, Dept Phys, CRAQ, CP 6128 Succ Ctr Ville, Montreal, PQ H3C 3J7, Canada
9.Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 10617, Taiwan
10.Tokushima Univ, Minami Jousanajima Machi 1-1, Tokushima 7708502, Japan
11.Tokushima Univ, Inst Liberal Arts & Sci, Minami Jousanajima Machi 1-1, Tokushima 7708502, Japan
12.Korea Astron & Space Sci Inst KASI, 776 Daedeokdae Ro, Daejeon 34055, South Korea
13.NASA, SOFIA Sci Ctr, Univ Space Res Assoc, Ames Res Ctr, MS N232-12, Moffett Field, CA 94035 USA
14.Univ Sci & Technol, Korea UST, 217 Gajeong Ro, Daejeon 34113, South Korea
15.Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan
16.Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan
17.Chinese Acad Sci, NAOC, CAS Key Lab FAST, Beijing, Peoples R China
18.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
19.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China
20.Natl Astron Observ Japan, Natl Inst Nat Sci, Mitaka, Tokyo 1818588, Japan
21.Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England
22.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
23.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
24.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
25.Univ Paris Diderot, IRFU Serv Astrophys, CEA Saclay, Lab AIM CEA DSM CNRS, F-91191 Gif Sur Yvette, France
26.Nagoya Univ, Grad Sch Sci, Dept Phys, Chikusa Ku, Nagoya, Aichi 4648602, Japan
27.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
28.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan
29.Chungnam Natl Univ, Dept Astron & Space Sci, 99 Daehak Ro, Daejeon 34134, South Korea
30.Univ Hertfordshire, Sch Phys Astron & Math, Coll Lane, Hatfield AL10 9AB, Herts, England
31.Univ Tokyo, Grad Sch Arts & Sci, Dept Earth Sci & Astron, Meguro Ku, 3-8-1 Komaba, Tokyo 1538902, Japan
32.Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales
33.Jet Prop Lab, M-S 169-506,4800 Oak Grove Dr, Pasadena, CA 91109 USA
34.Univ Leeds, Dept Appl Math, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England
35.Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada
36.Natl Radio Astron Observ, 520 Edgemt Rd, Charlottesville, VA 22903 USA
37.Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Oxford Rd, Manchester M13 9PL, Lancs, England
38.Univ Exeter, Phys & Astron, Stocker Rd, Exeter EX4 4QL, Devon, England
39.Natl Astron Observ Japan, Subaru Telescope, 650 N Aohoka Pl, Hilo, HI 96720 USA
40.UK Astron Technol Ctr, Royal Observ, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland
41.Univ Edinburgh, Inst Astron, Royal Observ, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland
42.Univ Western Ontario, Dept Phys & Astron, 1151 Richmond St, London, ON N6A 3K7, Canada
43.Doshisha Univ, Dept Environm Syst Sci, Miyakodani 1-3, Kyoto 6100394, Japan
44.Natl Astron Observ Japan, Div Theoret Astron, Mitaka, Tokyo 1818588, Japan
45.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Kagamiyama 1-3-1, Higashihiroshima, Hiroshima 7398526, Japan
46.Hiroshima Univ, Dept Phys, Kagamiyama 1-3-1, Higashihiroshima, Hiroshima 7398526, Japan
47.Hiroshima Univ, Core Res Energet Universe CORE U, Kagamiyama 1-3-1, Higashihiroshima, Hiroshima 7398526, Japan
48.NAOJ, NRO, Tokyo, Japan
49.Kongju Natl Univ, Dept Earth Sci Educ, 56 Gongjudaehak Ro, Gongju Si 32588, Chungcheongnam, South Korea
50.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan
51.McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
52.Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canada
53.Natl Taiwan Univ, Grad Inst Astron & Astrophys, 1,Sec 4,Roosevelt Rd, Taipei 10617, Taiwan
54.Kyung Hee Univ, Sch Space ReNarch, 1732 Deogyeong Daero, Yongin 17104, Gyeonggi Do, South Korea
55.Univ Leeds, Sch Phys & Astron, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England
56.Kagawa Univ, Saiwai Cho 1-1, Takamatsu, Kagawa 7608522, Japan
57.Kyoto Univ, Grad Sch Sci, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan
58.SOKENDAI Grad Univ Adv Studies, Hayama, Kanagawa 2400193, Japan
59.Kagoshima Univ, Grad Sch Sci & Engn, Dept Phys & Astron, 1-21-35 Korimoto, Kagoshima, Kagoshima 8900065, Japan
60.Cavendish Lab, Astrophys Grp, JJ Thomson Ave, Cambridge CB3 OHE, England
61.Univ Cambridge, Kavli Inst Cosmol, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
62.Tokyo Gakugei Univ, Dept Astron & Earth Sci, Koganei, Tokyo 1848501, Japan
63.UCL, Phys & Astron Dept, OSL, London WC1E 6BT, England
64.Kwansei Gakuin Univ, Sch Sci & Technol, Dept Phys, 2-1 Gakuen, Sanda, Hyogo 6691337, Japan
65.Astrobiol Ctr, Natl Inst Nat Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
66.ESO, Karl Schwarzschild Str 2, D-85748 Garching, Germany
Recommended Citation
GB/T 7714
Liu, Junhao,Qiu, Keping,Berry, David,et al. The JCMT BISTRO Survey: The Magnetic Field in the Starless Core rho Ophiuchus C[J]. ASTROPHYSICAL JOURNAL,2019,877(1):17.
APA Liu, Junhao.,Qiu, Keping.,Berry, David.,Di Francesco, James.,Bastien, Pierre.,...&Zenko, Tetsuya.(2019).The JCMT BISTRO Survey: The Magnetic Field in the Starless Core rho Ophiuchus C.ASTROPHYSICAL JOURNAL,877(1),17.
MLA Liu, Junhao,et al."The JCMT BISTRO Survey: The Magnetic Field in the Starless Core rho Ophiuchus C".ASTROPHYSICAL JOURNAL 877.1(2019):17.
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