The Structure of the Broad-Line Region in Active Galactic Nuclei

光谱中宽发射线的变化 活动星系核揭示了 线发射的结构和运动学 区域和关于中心源的性质， 不能以任何其他方式获得。 这个程序 决定了宽线的结构和运动学 活动星系核中的发射区 对有限来源的观察。 我们非常 提高我们持续监测的时间分辨率， 项目利用一个远程观测设施， 已开发用于与帕金斯1.8米望远镜。 此外，个别观察结果的质量将 通过使用新的CCD摄谱仪， CCD摄谱仪通过光纤与望远镜相连- 光学馈送，使我们能够使用光谱仪进行部分 晚上没有完全改变仪器在凯斯- 望远镜的颗粒焦点。 这使我们能够观察到一些 选择的来源往往对其他科学影响最小， 固定程序。

The variability of the broad emission lines in the spectra of active galactic nuclei reveals fundamental information about the structure and kinematics of the line-emitting region and about the nature of the central source that cannot be obtained in any other way. This program determines the structure and kinematics of the broad-line emitting regions in active galactic nuclei through repeated observations of a limited number of sources. We greatly improve the temporal resolution of our on-going monitoring project by making use of a Remote Observing Facility which has been developed for use with the Perkins 1.8 m telescope. Furthermore, the quality of the individual observations will be greatly improved through the use of a new CCD spectrograph. The CCD spectrograph is interfaced to the telescope with a fiber- optic feed which enables us to use the spectrograph for partial nights without a complete change of instrumentation at the Casse- grain focus of the telescope. This allows us to observe a few selected sources frequently with minimal impact on other scien- tific programs.