欧几里得准备计划：XXII. 基于机器学习的从模拟测光中选宁静星系
天体物理仪器与方法
2023-03-15 v2 星系天体物理
摘要
欧几里得空间望远镜将在光学和近红外波段提供深场成像，以及无缝近红外光谱，覆盖约 15,000 平方度的天区。预计欧几里得将探测到约 120 亿个天体源，从而促进宇宙学、星系演化及诸多其他课题的新见解。为最优地利用这一预期中的极大数据集，有必要开发适当的方法与软件。本文提出一种基于机器学习的新方法，利用宽波段欧几里得 I_E、Y_E、J_E、H_E 测光，结合其他巡天的多波段测光来选宁静星系。ARIADE 流水线使用元学习将决策树集成、最近邻和深度学习方法融合为单一分类器，其精度显著高于任一单独学习方法。该流水线具有“稀疏感知”能力，因此缺失的测光值仍可为分类提供信息。我们的流水线借助“伪标注”半监督方法，为选出的宁静星系推导测光红移。在应用离群值滤波器后，相对于 COSMOS2015 测光红移，我们的流水线实现了约 < 0.03 的归一化平均绝对偏差和约 < 0.02 的灾难性离群值比例。我们将分类流水线应用于对应于三种主要情景的模拟星系测光星表：(i) 具有辅助 ugriz、WISE 和射电数据的欧几里得深场巡天；(ii) 具有辅助 ugriz、WISE 和射电数据的欧几里得宽场巡天；(iii) 仅欧几里得宽场巡天。除欧几里得 I_E-Y_E、J_E-H_E 和 u-I_E、I_E-J_E 颜色-颜色方法外，我们的分类流水线优于 UVJ 选择，完备性和 F1 分数提升高达 2 倍。（删节）
引用
@article{arxiv.2209.13074,
title = {Euclid preparation: XXII. Selection of Quiescent Galaxies from Mock Photometry using Machine Learning},
author = {Euclid Collaboration and A. Humphrey and L. Bisigello and P. A. C. Cunha and M. Bolzonella and S. Fotopoulou and K. Caputi and C. Tortora and G. Zamorani and P. Papaderos and D. Vergani and J. Brinchmann and M. Moresco and A. Amara and N. Auricchio and M. Baldi and R. Bender and D. Bonino and E. Branchini and M. Brescia and S. Camera and V. Capobianco and C. Carbone and J. Carretero and F. J. Castander and M. Castellano and S. Cavuoti and A. Cimatti and R. Cledassou and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and L. Corcione and F. Courbin and M. Cropper and A. Da Silva and H. Degaudenzi and M. Douspis and F. Dubath and C. A. J. Duncan and X. Dupac and S. Dusini and S. Farrens and S. Ferriol and M. Frailis and E. Franceschi and M. Fumana and P. Gomez-Alvarez and S. Galeotta and B. Garilli and W. Gillard and B. Gillis and C. Giocoli and A. Grazian and F. Grupp and L. Guzzo and S. V. H. Haugan and W. Holmes and F. Hormuth and K. Jahnke and M. Kummel and S. Kermiche and A. Kiessling and M. Kilbinger and T. Kitching and R. Kohley and M. Kunz and H. Kurki-Suonio and S. Ligori and P. B. Lilje and I. Lloro and E. Maiorano and O. Mansutti and O. Marggraf and K. Markovic and F. Marulli and R. Massey and S. Maurogordato and H. J. McCracken and E. Medinaceli and M. Melchior and M. Meneghetti and E. Merlin and G. Meylan and L. Moscardini and E. Munari and R. Nakajima and S. M. Niemi and J. Nightingale and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and V. Pettorino and S. Pires and M. Poncet and L. Popa and L. Pozzetti and F. Raison and A. Renzi and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and E. Rossetti and R. Saglia and D. Sapone and B. Sartoris and R. Scaramella and P. Schneider and M. Scodeggio and A. Secroun and G. Seidel and C. Sirignano and G. Sirri and L. Stanco and P. Tallada-Crespi and D. Tavagnacco and A. N. Taylor and I. Tereno and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and L. Valenziano and T. Vassallo and Y. Wang and J. Weller and A. Zacchei and J. Zoubian and S. Andreon and S. Bardelli and A. Boucaud and R. Farinelli and J. Gracia-Carpio and D. Maino and N. Mauri and S. Mei and N. Morisset and F. Sureau and M. Tenti and A. Tramacere and E. Zucca and C. Baccigalupi and A. Balaguera-Antolinez and A. Biviano and A. Blanchard and S. Borgani and E. Bozzo and C. Burigana and R. Cabanac and A. Cappi and C. S. Carvalho and S. Casas and G. Castignani and C. Colodro-Conde and A. R. Cooray and J. Coupon and H. M. Courtois and O. Cucciati and S. Davini and G. De Lucia and H. Dole and J. A. Escartin and S. Escoffier and M. Fabricius and M. Farina and F. Finelli and K. Ganga and J. Garcia-Bellido and K. George and F. Giacomini and G. Gozaliasl and I. Hook and M. Huertas-Company and B. Joachimi and V. Kansal and A. Kashlinsky and E. Keihanen and C. C. Kirkpatrick and V. Lindholm and G. Mainetti and R. Maoli and S. Marcin and M. Martinelli and N. Martinet and M. Maturi and R. B. Metcalf and G. Morgante and A. A. Nucita and L. Patrizii and A. Peel and J. E. Pollack and V. Popa and C. Porciani and D. Potter and P. Reimberg and A. G. Sanchez and M. Schirmer and M. Schultheis and V. Scottez and E. Sefusatti and J. Stadel and R. Teyssier and C. Valieri and J. Valiviita and M. Viel and F. Calura and H. Hildebrandt},
journal= {arXiv preprint arXiv:2209.13074},
year = {2023}
}
备注
37 pages (including appendices), 26 figures; accepted for publication in Astronomy & Astrophysics