Research data supporting 'Measurement of the Small-Scale Structure of the Intergalactic Medium Using Close Quasar Pairs'

These data includes observations conducted with the MagE spectrograph at 'Las Campanas' observatory, in April 2008 and March 2009. They were obtained targeting quasar pairs separated by small angles in the sky and are not publicly available in other archives. These quasar pair spectra are part of a larger dataset used to measure the transverse coherence in the absorption due to the effect of thermal pressure in the intergalactic medium of the ancient universe.

The repository contains both science and calibration frames, as marked in the header of each files. More information about the targets and the observing run can be found in Prochaska, Hennawi et al,2013 ApJ, 776, 136

本数据集收录了于2008年4月及2009年3月，在'Las Campanas'天文台使用MagE光谱仪进行的观测数据。这些观测旨在针对天空中小角度分隔的类星体对，且在其他档案中并未公开。这些类星体对的光谱数据是更大规模数据集的一部分，该数据集用于测量古老宇宙星际介质中热压力效应导致的吸收横贯相干性。数据仓库中包含了科学帧和校准帧，如每文件头部所标记。关于观测目标和观测运行的更多信息，可参考Prochaska, Hennawi等人2013年发表在《天体物理学杂志》（ApJ）第776卷第136篇文章。