Mapping the three-dimensional dust extinction towards the supernova remnant S147 - the S147 dust cloud
Mapping the three-dimensional dust extinction towards the supernova remnant S147 - the S147 dust cloud
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DOI：
10.1093/mnras/stx2287
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发表时间：
2017-09
影响因子：
4.8
通讯作者：
B.-Q. Chen;X.-W. Liu;J. Ren;H.-B. Yuan;Y. Huang;B. Yu;M. Xiang;C. Wang;Z. Tian;H.-W. Zh
中科院分区：
文献类型：
--
作者：
B.-Q. Chen;X.-W. Liu;J. Ren;H.-B. Yuan;Y. Huang;B. Yu;M. Xiang;C. Wang;Z. Tian;H.-W. Zh
利用XSTPS-GAC、2 MASS和WISE的多波段光度测量数据，对超新星遗迹S147（G180.0-1.7）附近区域进行了三维消光分析。我们分离出一个以前未被识别的尘埃结构，可能与SNR S147有关。该结构，我们称之为“S147尘埃云”，估计有一个距离$d$ = 1.22 $\pm $0.21 kpc，与猜想一致，S147是与脉冲星PSR J 0538 + 2817。该云包括几个密度相对较高的消光团块，位于S147的射电壳层上，在空间上与CO和伽马射线发射特征相吻合。我们的结论是，使用CO测量跟踪的SNR相关的MCs的探测阈值，灰尘耗尽，在外银河系的距离估计的难度是不可避免的限制。3D尘埃消光图可以提供一个更好的方式来识别和研究SNR-MC相互作用。
We present a three dimensional (3D) extinction analysis in the region toward the supernova remnant (SNR) S147 (G180.0-1.7) using multi-band photometric data from the Xuyi Schmidt Telescope Photometric Survey of the Galactic Anticentre (XSTPS-GAC), 2MASS and WISE. We isolate a previously unrecognised dust structure likely to be associated with SNR S147. The structure, which we term as "S147 dust cloud", is estimated to have a distance $d$ = 1.22 $\pm$ 0.21 kpc, consistent with the conjecture that S147 is associated with pulsar PSR J0538 + 2817. The cloud includes several dense clumps of relatively high extinction that locate on the radio shell of S147 and coincide spatially with the CO and gamma-ray emission features. We conclude that the usage of CO measurements to trace the SNR associated MCs is unavoidably limited by the detection threshold, dust depletion, and the difficulty of distance estimates in the outer Galaxy. 3D dust extinction mapping may provide a better way to identify and study SNR-MC interactions.