THE CAS A-LIKE SNR 1E 0102.2-7219 IN THE SMALL MAGELLANIC CLOUD: AN ASYMMETRIC BIPOLAR EXPLOSION
THE CAS A-LIKE SNR 1E 0102.2-7219 IN THE SMALL MAGELLANIC CLOUD: AN ASYMMETRIC BIPOLAR EXPLOSION
复制标题
小麦哲伦云中的 CAS A 类 SNR 1E 0102.2-7219：不对称双极爆炸
DOI：
10.1088/0004-637x/721/1/597
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Dopita
中科院分区：
文献类型：
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作者：
F. Vogt;M. Dopita
我们使用赛丁斯普林天文台 2.3 m 望远镜上的广域摄谱仪绘制了小麦哲伦星云中年轻富氧超新星遗迹 1E 0102.2-7219 的 [O iii] λ5007 动力学图。根据所得的数据立方体，我们已经能够重建[O iii]细丝系统的完整三维结构。由此我们可以推断出喷射物具有不对称的双极结构。红移气体含有更微弱的团块，但速度比蓝移气体更高。爆炸的主轴与视线倾斜~40°。这种结构表明，超新星爆炸既受到祖星旋转的影响，也可能受到核心塌陷后全球旋转不稳定的影响。
We have used the Wide Field Spectrograph on the 2.3 m telescope at Siding Spring Observatory to map the [O iii] λ5007 dynamics of the young oxygen-rich supernova remnant 1E 0102.2-7219 in the Small Magellanic Cloud. From the resultant data cube, we have been able to reconstruct the full three-dimensional structure of the system of [O iii] filaments. From this we are able to deduce that the ejecta trace an asymmetric bipolar structure. The redshifted gas contains fainter clumps but with higher velocities than the blueshifted gas. The major axis of the explosion is inclined at ∼40° to the line of sight. This structure shows that the supernova explosion has been influenced both by the rotation of the progenitor star and, presumably, by a global rotational instability following core collapse.