暗能量巡天第六年结果：用于宇宙学的光度数据集
宇宙学与河外天体物理
2025-01-14 v2
摘要
我们描述了暗能量巡天（DES）六年观测所组装的光度数据集，用于静态天空宇宙学分析。DES Y6 Gold是一个从DES数据发布2（DR2）中整理的数据集，包含了改进的测量、光度校准、目标分类和增值信息。Y6 Gold覆盖了南银冠近5000平方度的成像，包含6.69亿个天体，对于延展天体在信噪比~10时深度达到等，大气顶层光度均匀性。Y6 Gold通过同时拟合多历元测光来增强DES DR2，以获得更稳健的星系形状、颜色和光度红移估计。Y6 Gold具有改进的形态学星-星系分类，对于的星系，效率为，污染率为。此外，它还包括每个天体的质量信息，以及用于宇宙学分析的覆盖足迹、掩蔽区域、成像深度、巡天条件和天体物理前景的伴随地图。经过质量选择后，基准样本包含4.48亿个星系和1.2亿颗恒星。本文将通过在线数据访问和文档进行补充。
引用
@article{arxiv.2501.05739,
title = {Dark Energy Survey Year 6 Results: Photometric Data Set for Cosmology},
author = {K. Bechtol and I. Sevilla-Noarbe and A. Drlica-Wagner and B. Yanny and R. A. Gruendl and E. Sheldon and E. S. Rykoff and J. De Vicente and M. Adamow and D. Anbajagane and M. R. Becker and G. M. Bernstein and A. Carnero Rosell and J. Gschwend and M. Gorsuch and W. G. Hartley and M. Jarvis and T. Jeltema and R. Kron and T. A. Manning and J. O'Donnell and A. Pieres and M. Rodríguez-Monroy and D. Sanchez Cid and M. Tabbutt and L. Toribio San Cipriano and D. L. Tucker and N. Weaverdyck and M. Yamamoto and T. M. C. Abbott and M. Aguena and A. Alarcón and S. Allam and A. Amon and F. Andrade-Oliveira and S. Avila and P. H. Bernardinelli and E. Bertin and J. Blazek and D. Brooks and D. L. Burke and J. Carretero and F. J. Castander and R. Cawthon and C. Chang and A. Choi and C. Conselice and M. Costanzi and M. Crocce and L. N. da Costa and T. M. Davis and S. Desai and H. T. Diehl and S. Dodelson and P. Doel and C. Doux and A. Ferté and B. Flaugher and P. Fosalba and J. Frieman and J. García-Bellido and M. Gatti and E. Gaztanaga and G. Giannini and D. Gruen and G. Gutierrez and K. Herner and S. R. Hinton and D. L. Hollowood and K. Honscheid and D. Huterer and N. Jeffrey and E. Krause and K. Kuehn and O. Lahav and S. Lee and C. Lidman and M. Lima and H. Lin and J. L. Marshall and J. Mena-Fernández and R. Miquel and J. J. Mohr and J. Muir and J. Myles and R. L. C. Ogando and A. Palmese and A. A. Plazas Malagón and A. Porredon and J. Prat and M. Raveri and A. K. Romer and A. Roodman and S. Samuroff and E. Sanchez and V. Scarpine and M. Smith and M. Soares-Santos and E. Suchyta and G. Tarle and M. A. Troxel and V. Vikram and A. R. Walker and J. Weller and P. Wiseman and Y. Zhang},
journal= {arXiv preprint arXiv:2501.05739},
year = {2025}
}
备注
Data products and documentation are publicly available at https://des.ncsa.illinois.edu/releases