暗能量巡天第三年结果：用于宇宙学研究的测光数据集
宇宙学与河外天体物理
2021-05-28 v2 星系天体物理
天体物理仪器与方法
摘要
我们描述了由前三年科学观测 assembled 以支持暗能量巡天（DES）第三年宇宙学分析而组装的暗能量巡天（DES）测光数据集，并提供面向广大天体物理学界的使用说明。Y3 Gold 在 DES 先前的发布版本 Y1 Gold 与数据发布 1（DES DR1）基础上做了改进，呈现了一个经过扩展和筛选的数据集，其中融入了图像去趋势与处理、测光定标以及天体分类等方面的算法进展。Y3 Gold 包含南银冠约 5000 平方度的 grizY 波段成像，涵盖近 3.9 亿个天体，对延展天体深度达到 S/N ~ 10 直至 ，且大气顶端的测光均匀性 mmag。与 DR1 相比，相对于 Gaia 的测光残差降低了 ，并引入了逐天体色度修正。Y3 Gold 在 DES DR1 基础上增加了对多历元测光的同步拟合，以获得更稳健的星系颜色测量及相应的测光红移估计。Y3 Gold 具备改进的形态学星–星系分类，对 的星系分类效率 、纯度 。此外，它还包括逐天体质量信息，以及配套的足迹覆盖图、掩蔽区域图、成像深度图、巡天条件图和天体物理前景图，用于选取宇宙学分析样本。本文将由在线资源作为补充。
引用
@article{arxiv.2011.03407,
title = {Dark Energy Survey Year 3 Results: Photometric Data Set for Cosmology},
author = {I. Sevilla-Noarbe and K. Bechtol and M. Carrasco Kind and A. Carnero Rosell and M. R. Becker and A. Drlica-Wagner and R. A. Gruendl and E. S. Rykoff and E. Sheldon and B. Yanny and A. Alarcon and S. Allam and A. Amon and A. Benoit-Lévy and G. M. Bernstein and E. Bertin and D. L. Burke and J. Carretero and A. Choi and H. T. Diehl and S. Everett and B. Flaugher and E. Gaztanaga and J. Gschwend and I. Harrison and W. G. Hartley and B. Hoyle and M. Jarvis and M. D. Johnson and R. Kessler and R. Kron and N. Kuropatkin and B. Leistedt and T. S. Li and F. Menanteau and E. Morganson and R. L. C. Ogando and A. Palmese and F. Paz-Chinchón and A. Pieres and C. Pond and M. Rodriguez-Monroy and J. Allyn-Smith and K. M. Stringer and M. A. Troxel and D. L. Tucker and J. de Vicente and W. Wester and Y. Zhang and T. M. C. Abbott and M. Aguena and J. Annis and S. Avila and S. Bhargava and S. L. Bridle and D. Brooks and D. Brout and F. J. Castander and R. Cawthon and C. Chang and C. Conselice and M. Costanzi and M. Crocce and L. N. da Costa and M. E. E. Pereira and T. M. Davis and S. Desai and J. P. Dietrich and P. Doel and K. Eckert and A. E. Evrard and I. Ferrero and P. Fosalba and J. García-Bellido and D. W. Gerdes and T. Giannantonio and D. Gruen and G. Gutierrez and S. R. Hinton and D. L. Hollowood and K. Honscheid and E. M. Huff and D. Huterer and D. J. James and T. Jeltema and K. Kuehn and O. Lahav and C. Lidman and M. Lima and H. Lin and M. A. G. Maia and J. L. Marshall and P. Martini and P. Melchior and R. Miquel and J. J. Mohr and R. Morgan and E. Neilsen and A. A. Plazas and A. K. Romer and A. Roodman and E. Sanchez and V. Scarpine and M. Schubnell and S. Serrano and M. Smith and E. Suchyta and G. Tarle and D. Thomas and C. To and T. N. Varga and R. H. Wechsler and J. Weller and R. D. Wilkinson},
journal= {arXiv preprint arXiv:2011.03407},
year = {2021}
}
备注
see https://www.darkenergysurvey.org/des-year-3-cosmology-results-papers/ for the full DES Y3 cosmology release