Euclid：早期释放观测透镜搜索实验
星系天体物理
2025-05-05 v2 宇宙学与河外天体物理
摘要
我们研究了Euclid望远镜探测星系尺度引力透镜的能力。为此，我们对朝向英仙团方向的0.7 deg² Euclid早期释放观测数据进行了系统性的人工视觉检查，同时使用高分辨率I_E波段和较低分辨率的Y_E、J_E、H_E波段。每个在I_E波段亮度超过23星等的延展源均由41名专家人工分类器进行检查，共计12086个10″×10″的图像块。我们找到了3个A类和13个B类候选体。我们通过建模评估了这16个候选体的有效性，并检验其是否与单一源被合理质量分布透镜化的结果一致。其中5个候选体通过了检验，5个被建模排除，6个无法确定。基于成功建模的5个候选体，我们推断完整的14000 deg² Euclid宽场巡天应包含约100000^{+70000}_{-30000}个既可通过视觉检查发现又具有有效透镜模型的星系-星系透镜。这与Euclid中约1.7×10⁵个可发现星系-星系透镜的理论预言一致。我们五个建模透镜的爱因斯坦半径在0.″68 < θ_E < 1.″24范围内，但与理论预言相比其爱因斯坦半径分布偏大，这表明我们的方法可能遗漏了小爱因斯坦半径系统。虽然对完整的Euclid数据集进行人工视觉检查是不现实的，但我们的结果证实了Euclid最终将提供约10⁵个星系尺度透镜样本的前景。
引用
@article{arxiv.2408.06217,
title = {Euclid: The Early Release Observations Lens Search Experiment},
author = {J. A. Acevedo Barroso and C. M. O'Riordan and B. Clément and C. Tortora and T. E. Collett and F. Courbin and R. Gavazzi and R. B. Metcalf and V. Busillo and I. T. Andika and R. Cabanac and H. M. Courtois and J. Crook-Mansour and L. Delchambre and G. Despali and L. R. Ecker and A. Franco and P. Holloway and N. Jackson and K. Jahnke and G. Mahler and L. Marchetti and P. Matavulj and A. Melo and M. Meneghetti and L. A. Moustakas and O. Müller and A. A. Nucita and A. Paulino-Afonso and J. Pearson and K. Rojas and C. Scarlata and S. Schuldt and S. Serjeant and D. Sluse and S. H. Suyu and M. Vaccari and A. Verma and G. Vernardos and M. Walmsley and H. Bouy and G. L. Walth and D. M. Powell and M. Bolzonella and J. -C. Cuillandre and M. Kluge and T. Saifollahi and M. Schirmer and C. Stone and A. Acebron and L. Bazzanini and A. Díaz-Sánchez and N. B. Hogg and L. V. E. Koopmans and S. Kruk and L. Leuzzi and A. Manjón-García and F. Mannucci and B. C. Nagam and R. Pearce-Casey and L. Scharré and J. Wilde and B. Altieri and A. Amara and S. Andreon and N. Auricchio and C. Baccigalupi and M. Baldi and A. Balestra and S. Bardelli and A. Basset and P. Battaglia and R. Bender and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and A. Caillat and S. Camera and G. P. Candini and V. Capobianco and C. Carbone and J. Carretero and S. Casas and M. Castellano and G. Castignani and S. Cavuoti and A. Cimatti and C. Colodro-Conde and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and L. Corcione and M. Cropper and A. Da Silva and H. Degaudenzi and G. De Lucia and J. Dinis and F. Dubath and X. Dupac and S. Dusini and M. Farina and S. Farrens and S. Ferriol and M. Frailis and E. Franceschi and S. Galeotta and B. Garilli and K. George and W. Gillard and B. Gillis and C. Giocoli and P. Gómez-Alvarez and A. Grazian and F. Grupp and L. Guzzo and S. V. H. Haugan and H. Hoekstra and W. Holmes and I. Hook and F. Hormuth and A. Hornstrup and M. Jhabvala and B. Joachimi and E. Keihänen and S. Kermiche and A. Kiessling and B. Kubik and M. Kunz and H. Kurki-Suonio and D. Le Mignant and S. Ligori and P. B. Lilje and V. Lindholm and I. Lloro and G. Mainetti and E. Maiorano and O. Mansutti and S. Marcin and O. Marggraf and M. Martinelli and N. Martinet and F. Marulli and R. Massey and E. Medinaceli and M. Melchior and Y. Mellier and E. Merlin and G. Meylan and M. Moresco and L. Moscardini and E. Munari and R. Nakajima and C. Neissner and R. C. Nichol and S. -M. Niemi and J. W. Nightingale and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and W. J. Percival and V. Pettorino and S. Pires and G. Polenta and M. Poncet and L. A. Popa and L. Pozzetti and F. Raison and R. Rebolo and A. Renzi and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and E. Rossetti and R. Saglia and Z. Sakr and A. G. Sánchez and D. Sapone and P. Schneider and T. Schrabback and A. Secroun and G. Seidel and S. Serrano and C. Sirignano and G. Sirri and J. Skottfelt and L. Stanco and J. Steinwagner and P. Tallada-Crespí and D. Tavagnacco and A. N. Taylor and I. Tereno and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and E. A. Valentijn and L. Valenziano and T. Vassallo and Y. Wang and J. Weller and E. Zucca and C. Burigana and V. Scottez and M. Viel and D. Scott and S. Vegetti},
journal= {arXiv preprint arXiv:2408.06217},
year = {2025}
}
备注
Replacement after peer review. 16 pages, 17 figures, Zenodo appendix at https://zenodo.org/records/14946028