Keplerian motion of broad-line region gas as evidence for supermassive black holes in active galactic nuclei

被引：334
|
作者：
Peterson, BM
Wandel, A
机构：
[1] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA
[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[3] Hebrew Univ Jerusalem, Racah Inst, IL-91904 Jerusalem, Israel
来源：
ASTROPHYSICAL JOURNAL | 1999年 / 521卷 / 02期
关键词：
galaxies : active; galaxies : individual (NGC 5548); galaxies : Seyfert; quasars : emission lines;
D O I：
10.1086/312190
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Emission-line variability data on NGC 5548 argue strongly for the existence of a mass of order 7 x 10(7) M. within the inner few light-days of the nucleus in the Seyfert 1 galaxy NGC 5548. The time-delayed response of the emission lines to continuum variations is used to inf'er the size of the line-emitting region, and these determinations are combined with measurements of the Doppler widths of the variable line components to estimate a virial mass. The data for several different emission lines spanning an order of magnitude in distance from the central source show the expected V proportional to r(-1/2) correlation and are consistent with a single value for the mass.
引用
收藏
页码：L95 / L98
页数：4
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