Euclid准备工作：使用CatBoost链式回归器进行银河物理性质估计
星系天体物理
2025-10-15 v1 天体物理仪器与方法
摘要
Euclid将在可见光和近红外波段 imaging 大约14000平方度的外银河天空，提供前所未有的规模和丰富性的数据集，将促进对银河演化进行多种研究。在绝大多数情况下，主要信息来源将来自宽带图像及其数据产品。因此，有迫切需要识别或开发可扩展且可靠的方法，使用Euclid的宽带光度学数据（可选包括地面光学数据）来估计银河的红移和物理性质。为此，我们提出了一种新方法，用于估计银河的红移、恒星质量、星形成率、比特星形成率、E(B-V)以及年龄，方法利用模拟的Euclid和地面光度学数据。我们性质估计管道的主要新颖之处在于其使用CatBoost实现的梯度提升树，结合链式回归和对训练数据的智能、自动优化。该管道还包括一种计算效率高的方法，用于估计预测不确定性；在缺乏真实标签的情况下，还能为模型性能指标（最高达z~2）提供准确的预测。我们将我们的管道应用于多个由模拟Euclid宽带光度学数据和模拟地面ugriz光度学数据组成的数据集，以评估我们方法在估计Euclid宽广调查中检测到的银河红移和物理性质方面的性能。我们的光度学红移和物理性质估计质量总体上具有高度竞争力，验证了我们建模方法的有效性。我们发现，地面光学光度学数据的加入显著提高了性质估计的质量，凸显了将Euclid数据与其他地面光学数据相结合的重要性。
引用
@article{arxiv.2504.13020,
title = {Euclid preparation. Estimating galaxy physical properties using CatBoost chained regressors with attention},
author = {Euclid Collaboration and A. Humphrey and P. A. C. Cunha and L. Bisigello and C. Tortora and M. Bolzonella and L. Pozzetti and M. Baes and B. R. Granett and A. Amara and S. Andreon and N. Auricchio and C. Baccigalupi and M. Baldi and S. Bardelli and A. Biviano and C. Bodendorf and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and G. Cañas-Herrera and V. Capobianco and C. Carbone and J. Carretero and S. Casas and M. Castellano and G. Castignani and S. Cavuoti and K. C. Chambers and A. Cimatti and C. Colodro-Conde and G. Congedo and C. J. Conselice and L. Conversi and Y. Copin and F. Courbin and H. M. Courtois and A. Da Silva and H. Degaudenzi and G. De Lucia and J. Dinis and F. Dubath and X. Dupac and S. Dusini and S. Escoffier and M. Farina and R. Farinelli and S. Farrens and S. Ferriol and M. Frailis and E. Franceschi and S. Galeotta and K. George and B. Gillis and C. Giocoli and A. Grazian and F. Grupp and L. Guzzo and S. V. H. Haugan and W. Holmes and I. Hook and F. Hormuth and A. Hornstrup and K. Jahnke and B. Joachimi and E. Keihänen and S. Kermiche and A. Kiessling and M. Kilbinger and B. Kubik and M. Kümmel and M. Kunz and H. Kurki-Suonio and S. Ligori and P. B. Lilje and V. Lindholm and I. Lloro and G. Mainetti and D. Maino and E. Maiorano and O. Mansutti and O. Marggraf and K. Markovic and M. Martinelli and N. Martinet and F. Marulli and R. Massey and H. J. McCracken and E. Medinaceli and S. Mei and M. Melchior and Y. Mellier and M. Meneghetti and E. Merlin and G. Meylan and M. Moresco and L. Moscardini and E. Munari and R. Nakajima and S. -M. Niemi and J. W. Nightingale and C. Padilla and S. Paltani and F. Pasian and K. Pedersen and V. Pettorino and S. Pires and G. Polenta and M. Poncet and L. A. Popa 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 R. Scaramella and P. Schneider and T. Schrabback and M. Scodeggio and A. Secroun and E. Sefusatti and G. Seidel and S. Serrano and P. Simon and C. Sirignano and A. Spurio Mancini and L. Stanco and J. Steinwagner and P. Tallada-Crespí and A. N. Taylor and I. Tereno and S. Toft and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and L. Valenziano and J. Valiviita and T. Vassallo and A. Veropalumbo and Y. Wang and J. Weller and G. Zamorani and J. Zoubian and E. Zucca and A. Boucaud and E. Bozzo and C. Burigana and M. Calabrese and N. Mauri and V. Scottez and M. Tenti and M. Viel and M. Wiesmann and Y. Akrami and V. Allevato and S. Anselmi and M. Ballardini and A. Blanchard and S. Borgani and S. Bruton and R. Cabanac and A. Calabro and A. Cappi and C. S. Carvalho and T. Castro and S. Contarini and A. R. Cooray and J. Coupon and O. Cucciati and G. Desprez and A. Díaz-Sánchez and S. Di Domizio and J. A. Escartin Vigo and A. G. Ferrari and P. G. Ferreira and I. Ferrero and F. Fornari and L. Gabarra and K. Ganga and J. García-Bellido and E. Gaztanaga and F. Giacomini and G. Gozaliasl and A. Gregorio and A. Hall and H. Hildebrandt and J. Hjorth and J. J. E. Kajava and V. Kansal and D. Karagiannis and C. C. Kirkpatrick and L. Legrand and G. Libet and A. Loureiro and G. Maggio and M. Magliocchetti and F. Mannucci and R. Maoli and C. J. A. P. Martins and S. Matthew and L. Maurin and R. B. Metcalf and P. Monaco and C. Moretti and G. Morgante and Nicholas A. Walton and J. Odier and L. Patrizii and M. Pöntinen and V. Popa and C. Porciani and D. Potter and I. Risso and P. -F. Rocci and M. Sahlén and A. Schneider and M. Sereno and C. Tao and G. Testera and R. Teyssier and S. Tosi and A. Troja and M. Tucci and C. Valieri and D. Vergani and G. Verza},
journal= {arXiv preprint arXiv:2504.13020},
year = {2025}
}
备注
22 pages, 13 figures, 4 tables. Accepted for publication by Astronomy & Astrophysics