DES 科学验证期弱引力透镜剪切星表
天体物理仪器与方法
2016-05-25 v3 宇宙学与河外天体物理
摘要
我们展示了在暗能量巡天（DES）所用新型暗能量相机（DECam）的科学验证（SV）期间获取的 139 平方度数据的弱引力透镜剪切星表。我们描述了使用两个独立的剪切测量流程 IM3SHAPE 和 NGMIX 进行目标选择、点扩散函数估计和剪切测量的过程，这两个流程分别产生了包含 212 万和 344 万个星系的星表。我们详细说明了对剪切测量结果进行的一系列零检验，并发现它们满足了使用 SV 数据进行弱引力透镜科学应用所需系统误差水平的要求。我们还讨论了一些计划中的算法改进，这些改进对于为预计覆盖 5000 平方度的完整 5 年期 DES 生成足够精确的剪切星表是必要的。
引用
@article{arxiv.1507.05603,
title = {The DES Science Verification Weak Lensing Shear Catalogues},
author = {M. Jarvis and E. Sheldon and J. Zuntz and T. Kacprzak and S. L. Bridle and A. Amara and R. Armstrong and M. R. Becker and G. M. Bernstein and C. Bonnett and C. Chang and R. Das and J. P. Dietrich and A. Drlica-Wagner and T. F. Eifler and C. Gangkofner and D. Gruen and M. Hirsch and E. M. Huff and B. Jain and S. Kent and D. Kirk and N. MacCrann and P. Melchior and A. A. Plazas and A. Refregier and B. Rowe and E. S. Rykoff and S. Samuroff and C. Sánchez and E. Suchyta and M. A. Troxel and V. Vikram and T. Abbott and F. B. Abdalla and S. Allam and J. Annis and A. Benoit-Lévy and E. Bertin and D. Brooks and E. Buckley-Geer and D. L. Burke and D. Capozzi and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and J. Clampitt and M. Crocce and C. E. Cunha and C. B. D'Andrea and L. N. da Costa and D. L. DePoy and S. Desai and H. T. Diehl and P. Doel and A. Fausti Neto and B. Flaugher and P. Fosalba and J. Frieman and E. Gaztanaga and D. W. Gerdes and R. A. Gruendl and G. Gutierrez and K. Honscheid and D. J. James and K. Kuehn and N. Kuropatkin and O. Lahav and T. S. Li and M. Lima and M. March and P. Martini and R. Miquel and J. J. Mohr and E. Neilsen and B. Nord and R. Ogando and K. Reil and A. K. Romer and A. Roodman and M. Sako and E. Sanchez and V. Scarpine and M. Schubnell and I. Sevilla-Noarbe and R. C. Smith and M. Soares-Santos and F. Sobreira and M. E. C. Swanson and G. Tarle and J. Thaler and D. Thomas and A. R. Walker and R. H. Wechsler},
journal= {arXiv preprint arXiv:1507.05603},
year = {2016}
}
备注
Accepted by MNRAS; 38 pages, 29 figures; v3: minor edits based on referee's comments, switched to mnras style, added figure 8, updated info about released catalogs