宇宙演化图先导巡天
宇宙学与河外天体物理
2021-09-15 v1 天体物理仪器与方法
摘要
我们展示了宇宙演化图（EMU）首次先导巡天的数据与初步结果，该巡天使用澳大利亚平方公里阵列探路者（ASKAP）望远镜在 944 MHz 观测。巡天覆盖暗能量巡天所覆盖区域中的 270 \sqdeg，在空间分辨率 11--18 arcsec 下达到 25--30 \ujybm\ rms 的深度，由此产生一个包含 220,000 个源的光源表，其中 180,000 个为单分量源。在此我们给出单分量源星表，以及（在可用时）光学与红外交叉证认、分类和红移。与以往巡天相比，本巡天探索了参数空间的新区域。具体而言，EMU 先导巡天具有高密度源，且对低表面亮度辐射具有高灵敏度。这些特性导致探测到以往巡天中罕见或缺失的源类型。我们在此展示其中一些新结果。
引用
@article{arxiv.2108.00569,
title = {The Evolutionary Map of the Universe Pilot Survey},
author = {Ray P. Norris and Joshua Marvil and J. D. Collier and Anna D. Kapinska and Andrew N. O'Brien and L. Rudnick and Heinz Andernach and Jacobo Asorey and Michael J. I. Brown and Marcus Bruggen and Evan Crawford and Jayanne English and Syed Faisal ur Rahman and Miroslav D. Filipovic and Yjan Gordon and Gulay Gurkan and Catherine Hale and Andrew M. Hopkins and Minh T. Huynh and Kim HyeongHan and M. James Jee and Baerbel S. Koribalski and Emil Lenc and Kieran Luken and David Parkinson and Isabella Prandoni and Wasim Raja and Thomas H. Reiprich and Christopher J. Riseley and Stanislav S. Shabala and Jaimie R. Sheil and Tessa Vernstrom and Matthew T. Whiting and James R. Allison and C. S. Anderson and Lewis Ball and Martin Bell and John Bunton and T. J. Galvin and Neeraj Gupta and Aidan Hotan and Colin Jacka and Peter J. Macgregor and Elizabeth K. Mahony and Umberto Maio and Vanessa Moss and M. Pandey-Pommier and Maxim A. Voronkov},
journal= {arXiv preprint arXiv:2108.00569},
year = {2021}
}
备注
Accepted by PASA