暗能量巡天第一年结果：用于宇宙学的测光数据集
宇宙学与河外天体物理
2018-05-04 v2 天体物理仪器与方法
摘要
我们描述了暗能量巡天（DES）内部第一年宇宙学数据集Y1A1 GOLD的创建、内容和验证，以支持即将进行的宇宙学分析。Y1A1 GOLD数据集由多个观测历元的DES成像数据汇编而成，包含校准的测光零点、天体目录以及辅助数据产品——例如巡天深度和观测条件图、恒星-星系分类和测光红移估计——这些都是精确宇宙学分析所必需的。Y1A1 GOLD广域天体目录包含约1.37亿个在DES grizY滤光片下覆盖约1800平方度的叠加图像中探测到的天体。星系的10σ极限星等为g = 23.4，r = 23.2，i = 22.5，z = 21.8，Y = 20.1。Y1A1 GOLD的测光校准通过结合每晚零点解与恒星色迹回归进行，整个巡天区域的绝对校准精度优于2%。DES Y1A1 GOLD是迄今为止在达到的深度上最大的测光数据集，能够精确测量z ≲ 1处的宇宙加速膨胀。
引用
@article{arxiv.1708.01531,
title = {Dark Energy Survey Year 1 Results: Photometric Data Set for Cosmology},
author = {A. Drlica-Wagner and I. Sevilla-Noarbe and E. S. Rykoff and R. A. Gruendl and B. Yanny and D. L. Tucker and B. Hoyle and A. Carnero Rosell and G. M. Bernstein and K. Bechtol and M. R. Becker and A. Benoit-Levy and E. Bertin and M. Carrasco Kind and C. Davis and J. de Vicente and H. T. Diehl and D. Gruen and W. G. Hartley and B. Leistedt and T. S. Li and J. L. Marshall and E. Neilsen and M. M. Rau and E. Sheldon and J. Smith and M. A. Troxel and S. Wyatt and Y. Zhang and T. M. C. Abbott and F. B. Abdalla and S. Allam and M. Banerji and D. Brooks and E. Buckley-Geer and D. L. Burke and D. Capozzi and J. Carretero and C. E. Cunha and C. B. D'Andrea and L. N. da Costa and D. L. DePoy and S. Desai and J. P. Dietrich and P. Doel and A. E. Evrard and A. Fausti Neto and B. Flaugher and P. Fosalba and J. Frieman and J. Garcia-Bellido and D. W. Gerdes and T. Giannantonio and J. Gschwend and G. Gutierrez and K. Honscheid and D. J. James and T. Jeltema and K. Kuehn and S. Kuhlmann and N. Kuropatkin and O. Lahav and M. Lima and H. Lin and M. A. G. Maia and P. Martini and R. G. McMahon and P. Melchior and F. Menanteau and R. Miquel and R. C. Nichol and R. L. C. Ogando and A. A. Plazas and A. K. Romer and A. Roodman and E. Sanchez and V. Scarpine and R. Schindler and M. Schubnell and M. Smith and R. C. Smith and M. Soares-Santos and F. Sobreira and E. Suchyta and G. Tarle and V. Vikram and A. R. Walker and R. H. Wechsler and J. Zuntz},
journal= {arXiv preprint arXiv:1708.01531},
year = {2018}
}
备注
43 pages, 28 figures, 8 tables; updated to match published version