LOFAR 两米巡天 (LoTSS) 第三篇：首次数据发布——光学/红外证认与增值星表
摘要
LOFAR 两米巡天 (LoTSS) 是一项正在进行的对北天区灵敏、高分辨率 120-168 MHz 巡天，具有多样且宏大的科学目标。LoTSS 的许多科学目标依赖于或将受益于把有时被错误编目的射电成分关联或分离为不同的射电源，以及这些源的光学对应体的证认与表征。在此我们给出首次数据发布中源的关联以及光学和/或红外证认，其采用统计技术与视觉关联和证认相结合的方法完成。我们详细记录了用于统计证认的与颜色和星等相关的似然比方法，以及用于视觉分类的名为 LOFAR Galaxy Zoo 的 Zooniverse 项目。我们描述了为各 LoTSS 源选择这两种不同方法中哪一种最合适的过程。最终呈现的 LoTSS-DR1-IDs 增值星表包含 318,520 个射电源，其中 231,716 个（73%）在 Pan-STARRS 和 WISE 中具有光学和/或红外证认。该增值星表作为本次数据发布的一部分可在 https://lofar-surveys.org/ 在线获取。
引用
@article{arxiv.1811.07927,
title = {The LOFAR Two-metre Sky Survey (LoTSS) III. First Data Release: optical/IR identifications and value-added catalogue},
author = {W. L. Williams and M. J. Hardcastle and P. N. Best and J. Sabater and J. H. Croston and K. J. Duncan and T. W. Shimwell and H. J. A. Röttgering and D. Nisbet and G. Gürkan and L. Alegre and R. K. Cochrane and A. Goyal and C. L. Hale and N. Jackson and M. Jamrozy and R. Kondapally and M. Kunert-Bajraszewska and V. H. Mahatma and B. Mingo and L. K. Morabito and I. Prandoni and C. Roskowinski and A. Shulevski and D. J. B. Smith and C. Tasse and S. Urquhart and B. Webster and G. J. White and R. J. Beswick and J. R. Callingham and K. T. Chyży and F. de Gasperin and J. J. Harwood and M. Hoeft and M. Iacobelli and J. P. McKean and A. P. Mechev and G. K. Miley and D. J. Schwarz and R. J. van Weeren},
journal= {arXiv preprint arXiv:1811.07927},
year = {2019}
}
备注
8 figures, 5 tables and 23 pages. This paper is part of the LOFAR surveys data release 1 and has been accepted for publication in a special edition of A&A that will appear in Feb 2019, volume 622. The catalogues and images from the data release will be publicly available at https://lofar-surveys.org/ upon publication in the journal