NGC4151的光变周期分析(英)

ANALYSIS OF THE LIGHT VARIATION PERIODS OF NGC4151

本文利用地面光学望远镜对NGC4151进行国际联测所得的结果，通过周期日方法和逐步回归方法得到了该目标的一些较为明显的光变周期．结果表明，NGC4151存在两个主要光变周期．一个是所有光学波段存在约14天的周期，另一个是连续谱存在约30天周期，而对于Hα和Hβ则分别为24和38天的周期．

Based on the international AGN watch of NGC4151 groundbased optical observational data. some significant periods of NGC4151 light variation are obtained by means of the Periodogram Analysis and stepwise Regression Analysis. There exist two major periods. One is about 14 days for all bands. Another is about 30 days for all continuum bands, but 24 and 38 days for Ha and HP, respechvely.