Long-term profile variability of double-peaked emission lines in AGNs

被引：0
|
作者：
Lewis, KT [1 ]
Eracleous, M [1 ]
Halpern, JP [1 ]
Storchi-Bergmann, T [1 ]
机构：
[1] Penn State Univ, Davey Lab 525, Dept Astron & Astrophys, University Pk, PA 16802 USA
来源：
INTERPLAY AMONG BLACK HOLES, STARS AND ISM IN GALACTIC NUCLEI | 2004年 / 222期
关键词：
D O I：
10.1017/S11743921304001668
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
An increasing number of AGNs exhibit broad, double-peaked Balmer emission lines, which arise from the outer regions of the accretion disk which fuels the AGN. The line profiles vary on timescales of 5-10 years. Our group has monitored a set of 20 double-peaked emitters for the past 8 years (longer for some objects). Here we describe a project to characterize the variability patterns of the double-peaked H alpha line profiles and compare with those of two simple models: a circular disk with a spiral arm and an elliptical disk.
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收藏
页码：107 / 108
页数：2
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