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Mapping the Properties of Blue Compact Dwarf Galaxies by Means of Integral Field Spectroscopy

机译:通过整体场光谱法绘制蓝色紧凑矮星星系的特性

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Blue Compact Dwarf (BCD) galaxies are metal-poor and gas-rich systems undergoing intense, spatially extended star-forming activity. These galaxies offer a unique opportunity to investigate dwarf galaxy formation and evolution, and probe violent star formation and its implications on the chemical, dynamical and structural properties of low-mass extragalactic systems near and far. Several fundamental questions in BCD research, such as their star formation histories and the mechanisms that control their cyclic starburst activity, are still far from well understood. In order to improve our understanding on BCD evolution, we are carrying out a comprehensive Integral Field Spectroscopic (IFS) survey of a large sample of BCDs. Integral Field Unit (IFU) spectroscopy provides simultaneously spectral and spatial information, allowing, in just one shot, to study the morphology and evolutionary status of the stellar component, and the physical properties of the warm interstellar medium (e.g., extinction, chemical abundances, kinematics). This ongoing IFS survey will supply much needed local templates that will ease the interpretation of IFS data for intermediate and high-redshift star-forming galaxies.
机译:蓝色紧凑矮人(BCD)星系是金属贫民和富含气体的系统,正在进行强烈,空间延长的星形形成活动。这些星系提供了一个独特的机会,可以调查矮星形成和演化,以及探针暴力明星的形成及其对近年来的低质量刷新系统的化学,动态和结构性质的影响。 BCD研究中的几个基本问​​题,例如他们的明星形成历史和控制循环爆炸活动的机制仍远未理解。为了提高我们对BCD演变的理解,我们正在进行一个全面的积分光谱(IFS)调查对BCD的大型样本。积分场单元(IFU)光谱学同时提供光谱和空间信息,仅在一次拍摄中,以研究恒星组分的形态和进化状态,以及暖颌骨介质的物理性质(例如,灭绝,化学丰富,运动学)。该持续的IFS调查将提供许多需要的本地模板,可以缓解对中间和高射频星形星系的IFS数据的解释。

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