利用机器学习在 DECam 本地体积探测巡天中识别星系-星系强引力透镜候选体
星系天体物理
2023-08-29 v3
摘要
我们使用应用于 DECam 本地体积探测巡天(DELVE)首次公开数据发布的成像数据的卷积神经网络(CNN)来搜寻星系-星系强透镜系统,该数据包含 亿个天体源,覆盖 南天,达到 点源深度 、、 和 mag。遵循使用 DECam 数据的类似搜寻方法,我们应用颜色和星等截断选出包含 万扩展天体源的星表。在用 CNN 评分后,得分最高的 50,000 张图像被人工检视,并按 0(肯定不是透镜)到 3(极可能是透镜)的量表打分。我们给出 581 个强透镜候选体列表,其中 562 个此前未报道过。我们根据人工分配的分数对候选体分类,得到 55 个 A 级候选体、149 个 B 级候选体和 377 个 C 级候选体。我们还从样本中强调了八个潜在的四重透镜类星体。由于我们的搜寻区域位于北银冠( 度)和南天半球( 度),我们的候选列表与其他现有地基搜寻重叠很少。在搜寻区域与其他搜寻重叠处,我们发现大量此前未识别的高质量候选体,表明我们的方法具有一定正交性。我们报告了候选体的性质,包括由图像分离估计的视星等和爱因斯坦半径。
引用
@article{arxiv.2210.10802,
title = {Identification of Galaxy-Galaxy Strong Lens Candidates in the DECam Local Volume Exploration Survey Using Machine Learning},
author = {E. A. Zaborowski and A. Drlica-Wagner and F. Ashmead and J. F. Wu and R. Morgan and C. R. Bom and A. J. Shajib and S. Birrer and W. Cerny and L. Buckley-Geer and B. Mutlu-Pakdil and P. S. Ferguson and K. Glazebrook and S. J. Gonzalez Lozano and Y. Gordon and M. Martinez and V. Manwadkar and J. O'Donnell and J. Poh and A. Riley and J. D. Sakowska and L. Santana-Silva and B. X. Santiago and D. Sluse and C. Y. Tan and E. J. Tollerud and A. Verma and J. A. Carballo-Bello and Y. Choi and D. J. James and N. Kuropatkin and C. E. Martínez-Vázquez and D. L. Nidever and J. L. Nilo Castellon and N. E. D. Noël and K. A. G. Olsen and A. B. Pace and S. Mau and B. Yanny and A. Zenteno and T. M. C. Abbott and M. Aguena and O. Alves and F. Andrade-Oliveira and S. Bocquet and D. Brooks and D. L. Burke and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and C. J. Conselice and M. Costanzi and M. E. S. Pereira and J. De Vicente and S. Desai and J. P. Dietrich and P. Doel and S. Everett and I. Ferrero and B. Flaugher and D. Friedel and J. Frieman and J. García-Bellido and D. Gruen and R. A. Gruendl and G. Gutierrez and S. R. Hinton and D. L. Hollowood and K. Honscheid and K. Kuehn and H. Lin and J. L. Marshall and P. Melchior and J. Mena-Fernández and F. Menanteau and R. Miquel and A. Palmese and F. Paz-Chinchón and A. Pieres and A. A. Plazas Malagón and J. Prat and M. Rodriguez-Monroy and A. K. Romer and E. Sanchez and V. Scarpine and I. Sevilla-Noarbe and M. Smith and E. Suchyta and C. To and N. Weaverdyck},
journal= {arXiv preprint arXiv:2210.10802},
year = {2023}
}
备注
24 pages; published version (ApJ)