论文标题
E-Merlin Galaxy Evolution Evolution Survey（E-Merge）：概述和调查描述
The e-MERLIN Galaxy Evolution Survey (e-MERGE): Overview and Survey Description
论文作者
论文摘要
我们介绍了Emerlin Galaxy Evolution Evolution Survey（Emerge）数据版本1（DR1）的概述和描述，这是一项高分辨率高分辨率的1.5 GHz无线电观察，对商品-N场的观察结果包括$ \ sim140 $ \ sim140 $ $ hour the Emerlin和$ \ sim40 $ the ligat the Gimte and and the ligat the Grone Array（VLA）。我们将Emerlin（提供高角度分辨率）的长基线与VLA的相对紧密包装的天线（提供出色的表面亮度敏感性）相结合，以产生深入的1.5 GHz无线电调查，并具有敏感性（$ \ sim1.5μ$ jy $ jy beam $ $^{ - 1} $^{ - 1} $ - yembular Solutive（$ 0.2 $ 0.2 $ 0.2 $ -0.7”（$ 0.7”（$ 0.7”（$ 0.7”（$ -0.7”（$''（$ -0.7）（$'”（$''（$'）（$'”（$'（$'）（$'”（$'（$'）（$ 0.7”（$''（$'） \ times 15' $）以$ z \ gtrsim 1 $检测和空间解决星形星系和AGN。 Emerge的目的是在深度，亚弧形无线电天空中提供新的约束，该限制将由SKA1-MID进行调查。在此首次出版物中，我们讨论了我们的数据分析技术，包括为$ \ sim20 $年基线建模的步骤，以及在$ uv $飞机中无缝合并Emerlin和VLA数据的新点差异功能/主要光束模型的开发。我们提出了早期的科学结果，包括对亮度的测量和/或线性尺寸为$ \ sim500 $ palaxes，以1.5 GHz选择。 In combination with deep Hubble Space Telescope observations, we measure a mean radio-to-optical size ratio of $r_{\rm eMERGE}/r_{\rm HST}\sim1.02\pm0.03$, suggesting that in most high-redshift galaxies, the $\sim$GHz continuum emission traces the stellar light seen in optical imaging.这是一系列论文中的第一篇，它将探讨$ \ sim $ kpc尺度的无线电属性，在Emerge DR1观察到的商品-N场中，星形星系和AGN的广播属性。
We present an overview and description of the eMERLIN Galaxy Evolution survey (eMERGE) Data Release 1 (DR1), a large program of high-resolution 1.5 GHz radio observations of the GOODS-N field comprising $\sim140$ hours of observations with eMERLIN and $\sim40$ hours with the Very Large Array (VLA). We combine the long baselines of eMERLIN (providing high angular resolution) with the relatively closely-packed antennas of the VLA (providing excellent surface brightness sensitivity) to produce a deep 1.5 GHz radio survey with the sensitivity ($\sim 1.5μ$Jy beam$^{-1}$), angular resolution ($0.2"$--$0.7"$) and field-of-view ($\sim15' \times 15'$) to detect and spatially resolve star-forming galaxies and AGN at $z\gtrsim 1$. The goal of eMERGE is to provide new constraints on the deep, sub-arcsecond radio sky which will be surveyed by SKA1-mid. In this initial publication, we discuss our data analysis techniques, including steps taken to model in-beam source variability over a $\sim20$ year baseline and the development of new point spread function/primary beam models to seamlessly merge eMERLIN and VLA data in the $uv$ plane. We present early science results, including measurements of the luminosities and/or linear sizes of $\sim500$ galaxes selected at 1.5 GHz. In combination with deep Hubble Space Telescope observations, we measure a mean radio-to-optical size ratio of $r_{\rm eMERGE}/r_{\rm HST}\sim1.02\pm0.03$, suggesting that in most high-redshift galaxies, the $\sim$GHz continuum emission traces the stellar light seen in optical imaging. This is the first in a series of papers which will explore the $\sim$kpc-scale radio properties of star-forming galaxies and AGN in the GOODS-N field observed by eMERGE DR1.
