A First Look at BISTRO Observations of the rho Oph-A core
文献类型：期刊论文
| 作者 | Kwon, Jungmi; Doi, Yasuo; Tamura, Motohide; Matsumura, Masafumi; Pattle, Kate; Berry, David; Sadavoy, Sarah; Matthews, Brenda C.; Ward-Thompson, Derek; Hasegawa, Tetsuo |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2018 |
| 卷号 | 859期号:1页码:4 |
| 英文摘要 | We present 850 mu m imaging polarimetry data of the rho Oph-A core taken with the Submillimeter Common-User Bolometer Array-2 (SCUBA-2) and its polarimeter (POL-2) as part of our ongoing survey project, B-fields In STar forming RegiOns (BISTRO). The polarization vectors are used to identify the orientation of the magnetic field projected on the plane of the sky at a resolution of 0.01 pc. We identify 10 subregions with distinct polarization fractions and angles in the 0.2 pc rho Oph-A core; some of them can be part of a coherent magnetic field structure in the rho Oph region. The results are consistent with previous observations of the brightest regions of rho Oph-A, where the degrees of polarization are at a level of a few percent, but our data reveal for the first time the magnetic field structures in the fainter regions surrounding the core where the degree of polarization is much higher (>5%). A comparison with previous near-infrared polarimetric data shows that there are several magnetic field components that are consistent at near-infrared and submillimeter wavelengths. Using the Davis-Chandrasekhar-Fermi method, we also derive magnetic field strengths in several subcore regions, which range from approximately 0.2 to 5 mG. We also find a correlation between the magnetic field orientations projected on the sky and the core centroid velocity components. |
| 语种 | 英语 |
| WOS记录号 | WOS:000432456000004 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/18029]  |
| 专题 | 中国科学院紫金山天文台 |
| 推荐引用方式 GB/T 7714 | Kwon, Jungmi,Doi, Yasuo,Tamura, Motohide,et al. A First Look at BISTRO Observations of the rho Oph-A core[J]. ASTROPHYSICAL JOURNAL,2018,859(1):4. |
| APA | Kwon, Jungmi.,Doi, Yasuo.,Tamura, Motohide.,Matsumura, Masafumi.,Pattle, Kate.,...&Zenko, Tetsuya.(2018).A First Look at BISTRO Observations of the rho Oph-A core.ASTROPHYSICAL JOURNAL,859(1),4. |
| MLA | Kwon, Jungmi,et al."A First Look at BISTRO Observations of the rho Oph-A core".ASTROPHYSICAL JOURNAL 859.1(2018):4. |
入库方式： OAI收割
来源：紫金山天文台
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