Spectroscopic Observations of Active Galactic Nuclei

对许多塞弗特1型星系的光谱观测将继续进行，以确定宽发射线的时间行为。研究表明，光谱中宽谱线的变化揭示了用其他方法无法获得的关于谱线发射区域和中心能量源的重要信息。研究的主要目的是确定活动星系核中宽线发射区域的大小和运动学。在亚利桑那州洛厄尔天文台的珀金斯1.8米望远镜上，俄亥俄州立大学新的变化耦合装置（CCD）光谱仪将进行观测。其中一些观测将由国际紫外线探测器（IUE）卫星以及可能的空间望远镜进行的紫外线观测加以补充。这些同时的光学和紫外光谱将用于与当前光电离模型的预测进行比较。

Spectroscopic observations of a number of Seyfert type 1 galaxies will be continued to determine the temporal behavior of the broad emission lines. It has been shown that the variability of the broad-lines in the spectra reveals important information about the line-emitting regions and the central energy sources that cannot be obtained in any other way. The primary purpose of the research is to determine the size and kinematics of the broad-line emitting regions in active galactic nuclei. Observations will be made with the new Ohio State University Change-Coupled Device (CCD) Spectrograph on the Perkins 1.8-m telescope at Lowell Observatory in Arizona. Some of these will be supplemented with ultraviolet observations made with the International Ultraviolet Explorer (IUE) satellite and possibly with the Space Telescope. These simultaneous optical and ultraviolet spectra will be used in comparisons with the predictions of current photoionization models.