دورية أكاديمية
Dust polarized emission observations of NGC 6334 : BISTRO reveals the details of the complex but organized magnetic field structure of the high-mass star-forming hub-filament network
| العنوان: | Dust polarized emission observations of NGC 6334 : BISTRO reveals the details of the complex but organized magnetic field structure of the high-mass star-forming hub-filament network |
|---|---|
| المؤلفون: | Arzoumanian, D., Furuya, R., Hasegawa, T., Tahani, M., Sadavoy, S., Hull, C. L. H., Johnstone, D., Koch, P. M., Inutsuka, S. -i., Doi, Y., Hoang, T., Onaka, T., Iwasaki, K., Shimajiri, Y., Inoue, T., Peretto, N., André, P., Bastien, P., Berry, D., Chen, H. -R. V., Francesco, J. Di, Eswaraiah, C., Fanciullo, L., Fissel, L. M., Hwang, J., Kang, J. -h., Kim, G., Kim, K. -T., Kirchschlager, F., Kwon, W., Lee, C. W., Liu, H. -L., Lyo, A. -R., Pattle, K., Soam, A., Tang, X., Whitworth, A., Ching, T. -C., Coudé, S., Wang, J. -W., Ward-Thompson, D., Lai, S. -P., Qiu, K., Bourke, T. L., Byun, D. -Y., Chen, M., Chen, Z., Chen, W. P., Cho, J., Choi, Y., Choi, M., Chrysostomou, A., Chung, E. J., Dai, S., Diep, P. N., Duan, H. -Y., Duan, Y., Eden, D., Fiege, J., Franzmann, E., Friberg, P., Fuller, G., Gledhill, T., Graves, S., Greaves, J., Griffin, M., Gu, Q., Han, I., Hatchell, J., Hayashi, S., Houde, M., Jeong, I. -G., Kang, M., Kang, S. -j., Kataoka, A., Kawabata, K., Kemper, F., Kim, M. -R., Kim, K. H., Kim, J., Kim, S., Kirk, J., Kobayashi, M. I. N., Konyves, V., Kusune, T., Kwon, J., Lacaille, K., Law, C. -Y., Lee, C. -F., Lee, Y. -H., Lee, S. -S., Lee, H., Lee, J. -E., Li, H. -b., Li, D., Liu, J., Liu, T., Liu, S. -Y., Lu, X., Mairs, S., Matsumura, M., Matthews, B., Moriarty-Schieven, G., Nagata, T., Nakamura, F., Nakanishi, H., Ngoc, N. B., Ohashi, N., Park, G., Parsons, H., Pyo, T. -S., Qian, L., Rao, R., Rawlings, J., Rawlings, M., Retter, B., Richer, J., Rigby, A., Saito, H., Savini, G., Scaife, A., Seta, M., Shinnaga, H., Tamura, M., Tang, Y. -W., Tomisaka, K., Tram, L. N., Tsukamoto, Y., Viti, S., Wang, H., Xie, J., Yen, H. -W., Yoo, H., Yuan, J., Yun, H. -S., Zenko, T., Zhang, G., Zhang, C. -P., Zhang, Y., Zhou, J., Zhu, L., De Looze, Ilse, Dowell, C. D., Eyres, S., Falle, S., Friesen, R., Robitaille, J. -F., Van Loo, Sven |
| المصدر: | ASTRONOMY & ASTROPHYSICS ; ISSN: 0004-6361 ; ISSN: 1432-0746 |
| سنة النشر: | 2021 |
| المجموعة: | Ghent University Academic Bibliography |
| مصطلحات موضوعية: | Physics and Astronomy, stars, formation, submillimeter, ISM, magnetic fields, structure, polarization, ISM: clouds, MOLECULAR CLOUD CORES, PERSISTENT COSMIC WEB, GRAIN ALIGNMENT, DARK CLOUDS, INTERSTELLAR EXTINCTION, INFRARED POLARIMETRY, INITIAL HIGHLIGHTS, RADIATIVE TORQUES, ACCRETION FLOWS, HERSCHEL VIEW |
| الوصف: | Context. Molecular filaments and hubs have received special attention recently thanks to new studies showing their key role in star formation. While the (column) density and velocity structures of both filaments and hubs have been carefully studied, their magnetic field (B-field) properties have yet to be characterized. Consequently, the role of B-fields in the formation and evolution of hub-filament systems is not well constrained. Aims. We aim to understand the role of the B-field and its interplay with turbulence and gravity in the dynamical evolution of the NGC 6334 filament network that harbours cluster-forming hubs and high-mass star formation. Methods. We present new observations of the dust polarized emission at 850 mu m toward the 2 pc x 10 pc map of NGC 6334 at a spatial resolution of 0.09 pc obtained with the James Clerk Maxwell Telescope (JCMT) as part of the B-field In STar-forming Region Observations (BISTRO) survey. We study the distribution and dispersion of the polarized intensity (PI), the polarization fraction (PF), and the plane-of-the-sky B-field angle (chi(BPOS)) toward the whole region, along the 10 pc-long ridge and along the sub-filaments connected to the ridge and the hubs. We derived the power spectra of the intensity and chi(BPOS) along the ridge crest and compared them with the results obtained from simulated filaments. Results. The observations span similar to 3 orders of magnitude in Stokes I and PI and similar to 2 orders of magnitude in PF (from similar to 0.2 to similar to 20%). A large scatter in PI and PF is observed for a given value of I. Our analyses show a complex B-field structure when observed over the whole region (similar to 10 pc); however, at smaller scales (similar to 1 chi(BPOS) varies coherently along the crests of the filament network. The observed power spectrum of chi(BPOS) can be well represented with a power law function with a slope of -1.33 +/- 0.23, which is similar to 20% shallower than that of I. We find that this result is compatible with the properties ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | https://biblio.ugent.be/publication/8695007Test; http://hdl.handle.net/1854/LU-8695007Test; http://dx.doi.org/10.1051/0004-6361/202038624Test |
| DOI: | 10.1051/0004-6361/202038624 |
| الإتاحة: | https://doi.org/10.1051/0004-6361/202038624Test https://biblio.ugent.be/publication/8695007Test http://hdl.handle.net/1854/LU-8695007Test |
| رقم الانضمام: | edsbas.117AFABA |
| قاعدة البيانات: | BASE |
| DOI: | 10.1051/0004-6361/202038624 |
|---|