Submillimetre dust polarization and opacity in the HD163296 protoplanetary ring system
Submillimetre dust polarization and opacity in the HD163296 protoplanetary ring system
复制标题
HD163296 原行星环系统中的亚毫米尘埃偏振和不透明度
DOI:
--
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发表时间:
2018
影响因子:
--
通讯作者:
I. Gregorio
中科院分区:
文献类型:
--
作者:
W. Dent;C. Pinte;C. Pinte;P. Cortés;F. Ménard;Antonio Hales;E. Fomalont;I. Gregorio
We present ALMA images of the sub-mm continuum polarisation and spectral index of the protoplanetary ringed disk HD163296. The polarisation fraction at 870{\mu}m is measured to be ~0.9% in the central core and generally increases with radius along the disk major axis. It peaks in the gaps between the dust rings, and the largest value (~4%) is found between rings 1 and 2. The polarisation vectors are aligned with the disk minor axis in the central core, but become more azimuthal in the gaps, twisting by up to +/-9degrees in the gap between rings 1 and 2. These general characteristics are consistent with a model of self-scattered radiation in the ringed structure, without requiring an additional dust alignment mechanism. The 870/1300{\mu}m dust spectral index exhibits minima in the centre and the inner rings, suggesting these regions have high optical depths. However, further refinement of the dust or the disk model at higher resolution is needed to reproduce simultaneously the observed degree of polarisation and the low spectral index.
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DOI:
10.3847/1538-4357/aaa769
发表时间:
2018
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Lee, Chin-Fei;Li, Zhi-Yun;Ching, Tao-Chung;Lai, Shih-Ping;Yang, Haifeng
通讯作者:
Yang, Haifeng
DOI:
10.3847/1538-4357/aaacd2
发表时间:
2018
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Cox, Erin G.;Harris, Robert J.;Looney, Leslie W.;Li, Zhi-Yun;Yang, Haifeng;J. Tobin, John;Stephens, Ian
通讯作者:
Stephens, Ian
DOI:
10.3847/1538-4357/aa998b
发表时间:
2017
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Stephens, Ian W.;Yang, Haifeng;Li, Zhi-Yun;Looney, Leslie W.;Kataoka, Akimasa;Kwon, Woojin;Fernández-López, Manuel;Hull, Charles L.;Hughes, Meredith;Segura-Cox, Dominique
通讯作者:
Segura-Cox, Dominique
影响因子:
4.8
作者:
Yang, Haifeng;Li, Zhi-Yun;Looney, Leslie W.;Girart, Josep M.;Stephens, Ian W.
通讯作者:
Stephens, Ian W.