类星体的多波段观测(英文)

MULTI-WAVELENGTH OBSERVATION OF QUASARS

在发现类星体的方法中 ,最有效的 4种方法是颜色方法、无缝光谱方法、射电方法和X射线方法 ,覆盖的波段为射电波段、光学波段和X射线波段 .将 4种方法联合在一起 ,应用于 4个UKST天区 .其目的是尽量减少选择效应 ,建立更完备的类星体巡天样本 .从 10 0 2天区开始 ,已完成了X射线选和部分光学选的分光观测工作 .发现了 1颗B =15.1的亮类星体和 1个Seyfert星系对 .

In order to reduce the selection effects and obtain highly complete samples, combined methods are used in recent quasar surveys. The MWQS (multi wavelength quasar survey) combines four selection methods (radio selection, color selection, slitless spectroscopy selection, and X ray selection) in three wavelengths (radio, optical, and X ray) to reduce the selection effects. During the MWQS program, a bright quasar RXJ 11315+1243 was discovered in field 1002 with magnitude B =15.1 and redshift z =0.09. During a program of identifying the RASS bright sources in 'blank fields', it is found that the RXJ 00031-0419 is a pair of Seyfert galaxies. It is the first interacting system known with a bright X flux.