论文标题
在子毫米目录中选择完整的Blazars样本
Selecting a complete sample of blazars in sub-millimetre catalogues
论文作者
论文摘要
\ textit {Herschel}天体物理Terahertz大面积调查（H-ATLAS），覆盖约642平方英尺。在从100到500 $μ\ rm m $的5个频段中，可以在亚MM波长下选择盲量限制的大机。但是，Blazars构成了H-ATLAS来源的一小部分，因此识别它们并不是一项琐碎的任务。使用H-ATLAS检测到的已知Blazars的数据，我们定义了一个500 \，$μ$ M选择的Blazars的基因座，并利用它来选择H-ATLAS字段中的Blazar候选者。 H-Atlas赤道和南部银河杆田中的候选人和已知的Blazars跟踪了澳大利亚望远镜紧凑型阵列（ATCA）或Karl G. Jansky非常大的阵列（VLA），并与现有的无线电和MM-Catalogues相匹配，以重建至少6阶的光谱范围。我们确定了一种选择方法，该方法结合了子-MM和无线电域中的信息，有效地列出了真正的Blazars。这样，我们确定了39个Blazar的样本，比$ s_ {500μ\ rm m} = 35 \，$ mjy在H-ATLAS字段中。测试使与大型Blazar候选人目录相交的H-ATLAS目录表明样品已完成。将派生的计数与模型预测进行比较，发现与C2EX模型的一致性良好，并基于ALMA数据的估计。
The \textit{Herschel} Astrophysical Terahertz Large Area Survey (H-ATLAS), that has covered about 642 sq. deg. in 5 bands from 100 to 500 $μ\rm m$, allows a blind flux-limited selection of blazars at sub-mm wavelengths. However, blazars constitute a tiny fraction of H-ATLAS sources and therefore identifying them is not a trivial task. Using the data on known blazars detected by the H-ATLAS we have defined a locus for 500\,$μ$m selected blazars and exploited it to select blazar candidates in the H-ATLAS fields. Candidates and known blazars in the H-ATLAS equatorial and South Galactic Pole fields were followed up with the Australia Telescope Compact Array (ATCA) or with the Karl G. Jansky Very Large Array (VLA), and matched with existing radio- and mm-catalogues to reconstruct the spectral behaviour over at least 6 orders of magnitude in frequency. We identified a selection approach that, combining the information in the sub-mm and radio domains, efficiently singles out genuine blazars. In this way, we identified a sample of 39 blazars brighter than $S_{500μ\rm m} = 35\,$mJy in the H-ATLAS fields. Tests made cross-matching the H-ATLAS catalogues with large catalogues of blazar candidates indicate that the sample is complete. The derived counts are compared with model predictions finding good consistency with the C2Ex model and with estimates based on ALMA data.
