Discovery of four X-ray quasars behind the Large Magellanic Cloud

被引：22

作者：

Dobrzycki, A ^{[1
]}

Groot, PJ ^{[1
]}

Macri, LM ^{[1
]}

Stanek, KZ ^{[1
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 569卷 / 01期

关键词：

Magellanic Clouds; quasars : individual (QSO J050736.52-684751.7; QSO J050833.29-685427.5; QSO J050924.05-672124.1; QSO J051853.19-690217.7); X-rays : general;

D O I：

10.1086/340539

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the discovery of four X-ray quasars (z(em) = 0.26, 0.53, 0.61, and 1.63) located behind the Large Magellanic Cloud; three of them are located behind the bar of the LMC. The quasars were identified via spectroscopy of optical counterparts to X-ray sources found serendipitously by the Chandra X-Ray Observatory satellite. All four quasars have archival VI photometry from the second phase of the Optical Gravitational Lensing Experiment (OGLE-II); one of them was found by OGLE to be variable. We present the properties of the quasars and discuss their possible applications.

引用

页码：L15 / L18

页数：4

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