论文标题
恒星形成星系的尘埃特性在最初的十亿年内
The dust properties of star-forming galaxies in the first billion years
论文作者
论文摘要
Atacama大毫米/亚毫米阵列（ALMA）正在获得对（亚）毫米波长实现的早期星系的最深刻的观察，并在宇宙历史的头十亿年中检测到年轻星系的尘埃发射，在电离时期均富含宇宙历史。在这里，我回顾了这些观察结果的一些最新结果，特别关注叛军大型计划，该计划针对Z〜7时40个星形星系的样本。阿尔玛（Alma）在非常年轻的星系中检测到大量的灰尘，而这种灰尘可能具有不同的红移星系中的灰尘。我描述了这一点的证据，并讨论了解释这些年轻星系的尘埃特性的理论/建模工作。最后，我描述了叛乱分子调查中出现的两个其他令人惊讶的结果：（i）Z〜7时完全尘埃刺激的星系的全新人群，以及（ii）紫外线和红外线发射之间的空间偏移率的流行率，紫外线，高雷德，高降低的恒星形成星系。
The Atacama Large Millimetre/Sub-millimetre Array (ALMA) is obtaining the deepest observations of early galaxies ever achieved at (sub-)millimetre wavelengths, and detecting the dust emission of young galaxies in the first billion years of cosmic history, well in the epoch of reionization. Here I review some of the latest results from these observations, with special focus on the REBELS large programme, which targets a sample of 40 star-forming galaxies at z~7. ALMA detects significant amounts of dust in very young galaxies, and this dust might have different properties to dust in lower-redshift galaxies. I describe the evidence for this, and discuss theoretical/modelling efforts to explain the dust properties of these young galaxies. Finally, I describe two additional surprising results to come out of the REBELS survey: (i) a new population of completely dust-obscured galaxies at z~7, and (ii) the prevalence of spatial offsets between the ultraviolet and infrared emission of UV-bright, high-redshift star-forming galaxies.
