论文标题
{\ sc precision}：用于高对比度成像的快速python管道 - 在红色超级巨人VX Sagitariae的球体观察中应用
{\sc precision}: A fast python pipeline for high-contrast imaging -- application to SPHERE observations of the red supergiant VX Sagitariae
论文作者
论文摘要
对极性行星的搜索驱动了仪器的快速进步，从而导致了诸如VLT的Sphere，Gemini South的Sphere，Subaru的GPI，在Subaru的Scexao，能够实现非常高的对比度（$ \ sim10^{6} $），周围有明亮的星星，带有小的内部工作gane（$ \ sim 0 \ sim 0 \ farcs c} $} $ {1}。这些工具中数据的最佳开发取决于易于使用的软件来处理和分析其数据产品。我们提出了一个纯净的Python管道，{\ sc Precision}，该管道可提供快速，记忆有效的数据，从球/IRDIS近红外成像仪中减少数据，并且可以很容易地扩展到其他仪器。我们将{\ sc precision}应用于对极红色超级vx〜sgr的观察，其内部流出被揭示到接近IR中的主机复合物，不对称结构。此外，光学偏光成像揭示了$ \ sim0.5^{\ prime \ prime} $尺度上明确的延长极化发射，随着方位角的变化很大，证实了不对称的。尽管不是结论性的，但这可能表明弹射器局限于圆盘或圆盘，尽管我们几乎可以看待，尽管其他非球形或块状配置仍然可能是可能的。 VX〜SGR没有已知的同伴，因此很难解释如此难以解释，因为系统中没有明显的角动量来源。
The search for extrasolar planets has driven rapid advances in instrumentation, resulting in cameras such as SPHERE at the VLT, GPI at Gemini South and SCExAO at Subaru, capable of achieving very high contrast ($\sim10^{6}$) around bright stars with small inner working angles ($\sim 0\farcs{1}$). The optimal exploitation of data from these instruments depends on the availability of easy-to-use software to process and analyse their data products. We present a pure-python pipeline, {\sc precision}, which provides fast, memory-efficient reduction of data from the SPHERE/IRDIS near-infrared imager, and can be readily extended to other instruments. We apply {\sc precision} to observations of the extreme red supergiant VX~Sgr, the inner outflow of which is revealed to host complex, asymmetric structure in the near-IR. In addition, optical polarimetric imaging reveals clear extended polarised emission on $\sim0.5^{\prime\prime}$ scales which varies significantly with azimuth, confirming the asymmetry. While not conclusive, this could suggest that the ejecta are confined to a disc or torus, which we are viewing nearly face on, although other non-spherical or clumpy configurations remain possible. VX~Sgr has no known companions, making such a geometry difficult to explain, as there is no obvious source of angular momentum in the system.
