A group of quasi-stellar objects closely associated with NGC 1068

被引：23

作者：

Burbidge, EM

机构：

[1] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 511卷 / 01期

关键词：

galaxies : individual (NGC 1068); galaxies : Seyfert; quasars : general; X-rays : galaxies;

D O I：

10.1086/311832

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is shown that three of the compact X-ray sources detected by ROSAT close to the nearby classical Seyfert galaxy NGC 1068 are quasi-stellar objects (QSOs) with redshifts z = 0.261, 0.385, and 0.655. Also, using previous optical studies, we show that a total of II QSOs brighter than V = 19 mag and with redshifts that range from 0.261 to 2.108 lie within a radius of 50' of NGC 1068. The distribution and very high surface density of these QSOs strongly suggest that they are physically associated with NGC 1068 and were ejected from it.

引用

页码：L9 / L11

页数：3

共 26 条

[21]

Sandage A., 1961, HUBBLE ATLAS GALAXIE

[22] Nuclear emission in spiral nebulae [J].