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

页码：L95 / L98

页数：4

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