A comparison between the narrow-line regions of Seyfert 1 and Seyfert 2 galaxies

被引：124

作者：

Schmitt, HR

Kinney, AL

机构：

[1] UNIV FED RIO GRANDE SUL,IF,DEPT ASTRON,BR-91501970 PORTO ALEGRE,RS,BRAZIL

[2] SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 463卷 / 02期

关键词：

galaxies; active; Seyfert; structure;

D O I：

10.1086/177264

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present high-resolution narrow-band [O III] images of Seyfert 1 and Seyfert 2 galaxies, obtained in the Hubble Space Telescope Data Archive. The continuum-subtracted [O III] images were used to measure the narrow-line region (NLR) sizes and compare them with the predictions from the Unified Scheme. This paper shows that the Seyfert 1 NLR sizes are much smaller than the NLR sizes of the Seyfert 2's if they were observed pole-on. We propose that the Unified Scheme is not wrong but rather that the Seyfert 1's may have their torus axes aligned close to the galaxy plane axis.

引用

页码：498 / &

页数：18

共 54 条

[1] UNIFIED MODELS FOR ACTIVE GALACTIC NUCLEI AND QUASARS [J].