论文标题
对货物字段(超级商品)的亚略列表。 V.深450微米成像
A Submillimeter Perspective on the GOODS Fields (SUPER GOODS). V. Deep 450 Micron Imaging
论文作者
论文摘要
我们介绍了两个商品字段的深层水肺-2 450微米成像,对于商品-N的中央RMS为1.14 mjy和1.86 mjy,用于商品-S。对于每个字段,我们给出一个> 4个sigma检测的目录(分别为79和16个来源)。我们构建了450微米的数量,与文献中的其他人找到了极好的一致性。我们将450微米的源与20厘米数据(磁场)和ALMA 870微米数据(Goods-S)匹配,以评估450微米位置的准确性。我们使用该场上可用的大量红移信息来测试如何从简单的通量比(450微米/850微米和20厘米/850微米)中估计的红移,发现紧密的相关性。我们提供了候选高红移亚毫米星系的目录。我们通过拟合源的光谱能量分布来寻找尘埃温度的演变,但是在考虑到远红外光度之后,我们没有发现任何明显的红移演化。我们找不到450微米选择的证据,而不是850微米选择。我们发现,一个450微米选择的样品仅增加了850微米样本以外的低降射(z <1.5)星系。
We present deep SCUBA-2 450 micron imaging of the two GOODS fields, achieving a central rms of 1.14 mJy for the GOODS-N and 1.86 mJy for the GOODS-S. For each field, we give a catalog of >4-sigma detections (79 and 16 sources, respectively). We construct the 450 micron number counts, finding excellent agreement with others from the literature. We match the 450 micron sources to 20 cm data (both fields) and ALMA 870 micron data (GOODS-S) to gauge the accuracy of the 450 micron positions. We use the extensive redshift information available on the fields to test how well redshift can be estimated from simple flux ratios (450 micron/850 micron and 20 cm/850 micron), finding tight correlations. We provide a catalog of candidate high-redshift submillimeter galaxies. We look for evolution in dust temperature with redshift by fitting the spectral energy distributions of the sources, but we do not find any significant redshift evolution after accounting for the far-infrared luminosity. We do not find evidence for 450 micron selection picking out warmer sources than 850 micron selection. We find that a 450 micron selected sample only adds low-redshift (z<1.5) galaxies beyond an 850 micron sample.