SAMI的第一项科学：在ESO 185- G031中偶然发现的银河风
First Science with SAMI: A Serendipitously Discovered Galactic Wind in ESO 185-G031
摘要：
我们在英澳望远镜上展示了悉尼-AAO多目标IFS（SAMI）的第一个科学结果。这种独特的仪器部署了13个融合的纤维束（hexabundles）在一个度的视野，允许同时空间分辨光谱的13个星系。在第一次SAMI试运行期间，针对单个星系场，发现一个物体（ESO 185-G 031）具有与大规模星系风一致的电离和运动学特性的扩展短轴发射。这一结果的重要性是双重的：（i）纤维束摄谱仪能够识别由核辐射活动引起的低表面亮度发射;（ii）这种活动可能比目前假设的更常见，因为传统的多目标摄谱仪使用单孔光纤，并且这些光谱几乎总是由核辐射主导。这些早期的结果表明，在未来的星系调查的多对象hexabundle光谱的非凡潜力。
英文摘要：
We present the first scientific results from the Sydney-AAO Multi-Object IFS (SAMI) at the Anglo-Australian Telescope. This unique instrument deploys 13 fused fibre bundles (hexabundles) across a one-degree field of view allowing simultaneous spatially-resolved spectroscopy of 13 galaxies. During the first SAMI commissioning run, targeting a single galaxy field, one object (ESO 185-G031) was found to have extended minor axis emission with ionisation and kinematic properties consistent with a large-scale galactic wind. The importance of this result is two-fold: (i) fibre bundle spectrographs are able to identify low-surface brightness emission arising from extranuclear activity; (ii) such activity may be more common than presently assumed because conventional multi-object spectrographs use single-aperture fibres and spectra from these are nearly always dominated by nuclear emission. These early results demonstrate the extraordinary potential of multi-object hexabundle spectroscopy in future galaxy surveys.
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