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首页> 外文期刊>The Astrophysical journal >PROPERTIES OF RADIO-SELECTED BROAD ABSORPTION LINE QUASARS FROM THE FIRST BRIGHT QUASAR SURVEY
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PROPERTIES OF RADIO-SELECTED BROAD ABSORPTION LINE QUASARS FROM THE FIRST BRIGHT QUASAR SURVEY

机译：第一次亮态拟态调查中的无线电选择宽带吸收线拟态的性质

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摘要

In a spectroscopic follow-up to the VLA FIRST survey, the FIRST Bright Quasar Survey (FBQS) has found 29 radio-selected broad absorption line (BAL) quasars. This sample provides the first opportunity to study the properties of radio-selected BAL quasars. Contrary to most previous studies, we establish that a significant population of radio-loud BAL quasars exists. Radio-selected BAL quasars display compact radio morphologies and possess both steep and flat radio spectra. Quasars with low-ionization BALs have a color distribution redder than that of the FBQS sample as a whole. The frequency of BAL quasars in the FBQS is significantly greater, perhaps by as much as a factor of 2, than that inferred from optically selected samples. The frequency of BAL quasars appears to have a complex dependence on radio loudness. The properties of this sample appear to be inconsistent with simple unified models in which BAL quasars constitute a subset of quasars seen edge-on.
机译：在对VLA FIRST调查的光谱跟踪中，FIRST明亮类星体调查（FBQS）发现了29个无线电选择的宽吸收线（BAL）类星体。该样本为研究无线电选择的BAL类星体的性质提供了第一个机会。与大多数先前的研究相反，我们确定存在大量的无线电大声BAL类星体。无线电选择的BAL类星体显示紧凑的无线电形态，并具有陡峭和平坦的无线电频谱。具有低电离BAL的类比的颜色分布总体上比FBQS样本的颜色分布更红。 FBQS中BAL类星体的频率比从光学选择的样本推断的频率大得多，可能高2倍。 BAL类星体的频率似乎对无线电响度具有复杂的依赖性。该样本的属性似乎与简单的统一模型不一致，在该模型中，BAL类星体构成了边缘类星体的子集。

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