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Hector - a modular integral field spectrograph instrument for the Anglo-Australian Telescope

机译:Hector - Anglo-Australian Telescope的模块化积分场光谱仪仪器

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Based on the success of the SAMI integral field spectrograph (IFS) instrument on the Anglo-Australian Telescope (AAT) the capacity for large IFS nearby galaxy surveys on the AAT is being substantially expanded with a new instrument called Hector. The high filling-fraction imaging fibre bundles 'hexabundles' of the type used on SAMI, are being enlarged to cover up to 30-arcsec diameter. The aim is to reach two effective radii on most galaxies, where the galaxy rotation curve flattens and >75% of the specific angular momentum of disk galaxies is accounted for. Driven by the key science case, Hector will have a 1.3A spectral resolution, enabling high-order stellar kinematics to be measured on a larger fraction of galaxies than with any other IFS instrument. Hector will be on sky in 2019. The first module of Hector, Hector-I, will have 21 hexabundles and >42 sky fibres to observe 20 galaxies and a calibration star simultaneously. It consists of new blue and red-arm spectrographs that have been designed at the Australian Astronomical Observatory (AAO; now called AAO-Macquarie), coupled to the new hexabundles and robotic positioner from AAO-USydney (formerly the Sydney Astrophotonics Instrumentation Laboratory, SAIL) at Sydney University. A novel robotic positioning concept will compensate for varying telecentricity over the 2-degree-field of the AAT to recoup the 20% loss in light at the edge of the field. Hector-I will survey 15,000 galaxies. Additional modules in the future would result in 30,000 galaxies. Hector will take integral field spectroscopy on galaxies with z<0.15 in the 4MOST WAVES-North and WAVES-South regions. The WAVES data, which will come later, will give the environment metrics necessary to relate how local and global environments influence galaxy growth through gas accretion, star formation and spins measured with Hector. The WALLABY ASKAP survey will trace HI gas across the Hector fields, which in combination with Hector will give a complete view of gas accretion and star formation.
机译:基于SAMI积分场光谱仪(IFS)仪器上的Anglo-Australian望远镜(AAT)的成功基于Anglo-Australian望远镜(AAT)的容量,AAT上附近的Galaxy调查附近的Calaxy调查是大大扩展的,并用一个名为Hector的新仪器扩展。 SAMI上使用的类型的高填充馏分成像纤维捆绑的“六支”的型号被扩大以掩盖高达30弧形的直径。目的是在大多数星系上达到两个有效的半径,其中包括银河旋转曲线平坦和> 75%的磁盘星系的特定角色势头。由关键科学案例驱动,赫克托将具有1.3A光谱分辨率,使得能够在比任何其他IFS仪器的较大分数上测量高阶恒星运动学。赫克托尔将在2019年在天空上。赫克托尔的第一个模块,赫克隆 - 我将有21个Hexabundles和> 42个天空纤维,同时观察20个星系和校准星。它由新的蓝色和红臂谱仪组成,这些射频在澳大利亚天文天文台(AAO;现在称为Aao-Macquarie),加上了来自Aao-Usydney的新的Hexabundles和机器人定位器(以前悉尼天空管学仪表实验室,航行)在悉尼大学。一种新颖的机器人定位概念将弥补在AAT的2度场上的不同远心,以恢复现场边缘的光线20%的损失。 Hector-I将调查15,000个星系。未来的其他模块将导致30,000个星系。 Hector将在最终波浪 - 北和波浪南部地区的Z <0.15上的星系上取得积分现场光谱。稍后将提到的波浪数据将提供有必要的环境指标,以如何通过备注测量的气体吸收,星形形成和旋转来影响星系生长。啤酒askap调查将追踪良好的气体,占地面域,其与赫克托尔结合将提供一种完整的气体吸收和星形形成视图。

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