THE HIGH-LUMINOSITY BL LACERTAE OBJECT PKS 0823-22

被引：18

作者：

FALOMO, R

机构：

[1] Osservatorio Astronomico di Padova, 35122-Padova, Vicolo dell'Osservatorio

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 353卷 / 01期

关键词：

BL Lacertae objects; Galaxies: individual (PKS 0823 - 22); Galaxies: redshifts; Gravitational lenses;

D O I：

10.1086/168595

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Simultaneous infrared, optical, and UV observations of the BL Lacertae object PKS 0823-22 are presented. The identification of the observed absorption doublet at λλ5341, 5355 with Mg II λλ2796, 2803 gives an absorption redshift zabs = 0.910. At this redshift, the object is one of the most luminous of its class with Mv ≲ -29.4. The spectral flux distribution of the source and the properties of intervening absorbing matter are discussed. Analogies with other sources suggest that the object may be gravitationally lensed.

引用

页码：114 / 117

页数：4

共 29 条

[1]

Adam G., 1985, Astronomy & Astrophysics Supplement Series, V61, P225

[2] THE NEAR-INFRARED CONTINUA OF BL LACERTAE OBJECTS [J].