THE ENVIRONMENT OF THE BL LACERTAE OBJECT PKS 2155-304

被引：83

作者：

FALOMO, R ^{[1
]}

PESCE, JE ^{[1
]}

TREVES, A ^{[1
]}

机构：

[1] ISAS,SISSA,I-34014 TRIESTE,ITALY

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 411卷 / 02期

关键词：

BL LACERTAE OBJECTS; INDIVIDUAL; (PKS; 2155-304); GALAXIES; CLUSTERING;

D O I：

10.1086/186913

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on direct imaging and spectroscopy of the field around the BL Lac object PKS 2155-304. An analysis of the richness of galaxies in the field shows that the source is located in a poor cluster of galaxies. Spectra of three galaxies indicate that they are at redshift z approximately 0.116, and the spectrum of the nebulosity surrounding the BL Lac object, yielding z = 0.116, shows that the BL Lac object belongs to the cluster. The galaxy environment of BL Lac objects, together with those of F-R I radio sources, the proposed parent objects in the beaming hypothesis, is briefly discussed.

引用

页码：L63 / L66

页数：4

共 35 条

[1]

Abell G. O., 1958, ASTROPHYS J SUPPL S, V3, P211, DOI [10.1086/190036, DOI 10.1086/190036]

[2] ULTRAVIOLET POLARIMETRY AND SPECTROSCOPY OF THE BL LACERTAE OBJECT PKS-2155-304 [J].