Absorption Spectrum of Quasars

这一奖项将支持用Palomar和Keck望远镜进行的广泛观测计划，以便利用类星体光谱中的吸收线来研究星系间云和星际气体从起源到现在的演化。将获得非常远的类星体样本的非常高分辨率的光谱，以便详细研究这些类星体通过中间星系和星际云的光所产生的吸收光谱。这些研究的结果将被用来研究这些云的物理性质。首席调查员被认为是这一问题的世界权威。

This award will provide support for a broad program of observations to be made with the Palomar and Keck telescopes in order to use the absorption lines in the spectra of quasars to study the evolution of intergalactic clouds and the interstellar gas in galaxies from their origin to the present epoch. Very high resolution spectra will be obtained of a sample of very distant quasars in order to make detailed studies of the absorption spectra produced by the light from these quasars passing through intervening galaxies and intergalactic clouds. The results from these studies will be used to study the physical nature of these clouds. The Principal Investigator is regarded as a world authority on this subject.