欧几里得准备工作。LVIII. 检测欧几里得调查中的星际球状团
星系天体物理
2025-01-22 v3
摘要
外银河系球状团（EGC）是丰富且强大的星系动力学和形成过程的探针，其自身的形成和演化也在广泛讨论中。由于球状团的紧凑特性，意味着它们在本地星系之外难以在空间上分辨，从而进行研究。本文我们检查了 EGC 在欧几里得望远镜图像中将如何被检测，使用了模拟的 pre-launch 图像以及来自 Fornax 星系团的首次 early-release 观测。欧几里得宽广调查将提供高空间分辨率的 VIS 成像（广义 IE 带）以及近红外光度（YE、JE 和 HE）。我们估计在欧几里得调查范围内的星系中约有 83 万颗 EGC，其中约 35 万颗在调查的检测极限内。对于约一半的 EGC，还可获得三条红外颜色。对于距离 50 万光年以内的任何星系，其 GC 亮度函数的亮度部分将被欧几里得宽广调查检测到。EGC 的可检测性主要受其宿主星系残余面积亮度的驱动。我们发现，基于真实的 Fornax 星系数据开发的自动化机器学习 EGC 分类方法提供了一种高纯度和高完整性 GC 候选人目录的有效方法。我们确认 EGC 在 Fornax 的 VIS 图像中相对于纯点源在空间上被分辨。我们的分析表明，无论是模拟数据还是首次实测数据，欧几里得都将大幅度增加可获得高分辨率成像的星系数量，这将使我们能够研究宿主星系外缘的星系。欧几里得在空间上不偏斜且一致的 manner 下系统性地研究 EGC 是独一无二的，并且已准备好改进我们对许多尚未充分研究的 GC 天体物理的理解。
引用
@article{arxiv.2405.14015,
title = {Euclid preparation. LVIII. Detecting globular clusters in the Euclid survey},
author = {Euclid Collaboration and K. Voggel and A. Lançon and T. Saifollahi and S. S. Larsen and M. Cantiello and M. Rejkuba and J. -C. Cuillandre and P. Hudelot and A. A. Nucita and M. Urbano and E. Romelli and M. A. Raj and M. Schirmer and C. Tortora and Abdurro'uf and F. Annibali and M. Baes and P. Boldrini and R. Cabanac and D. Carollo and C. J. Conselice and P. -A. Duc and A. M. N. Ferguson and L. K. Hunt and J. H. Knapen and P. Lonare and F. R. Marleau and M. Paolillo and M. Poulain and R. Sánchez-Janssen and E. Sola and S. Andreon and N. Auricchio and C. Baccigalupi and M. Baldi and S. Bardelli and C. Bodendorf and D. Bonino and E. Branchini and M. Brescia and J. Brinchmann and S. Camera and V. Capobianco and C. Carbone and R. G. Carlberg 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 L. Conversi and Y. Copin and F. Courbin and H. M. Courtois and M. Cropper and A. Da Silva and H. Degaudenzi and G. De Lucia and A. M. Di Giorgio and J. Dinis and F. Dubath and X. Dupac and S. Dusini and M. Farina and S. Farrens and S. Ferriol and S. Fotopoulou and M. Frailis and E. Franceschi and M. Fumana and S. Galeotta and K. George and W. Gillard and B. Gillis and C. Giocoli and P. Gómez-Alvarez and A. Grazian and F. Grupp and S. V. H. Haugan and H. Hoekstra and W. Holmes and I. Hook and F. Hormuth and A. Hornstrup and K. Jahnke and E. Keihänen and S. Kermiche and A. Kiessling and M. Kilbinger and R. Kohley and B. Kubik and M. Kümmel and M. Kunz and H. Kurki-Suonio and R. Laureijs and P. Liebing and S. Ligori and P. B. Lilje and V. Lindholm and I. Lloro 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 S. Maurogordato and E. Medinaceli and S. Mei 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 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 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 M. Roncarelli and E. Rossetti and R. Saglia and Z. Sakr and D. Sapone and B. Sartoris and R. Scaramella and P. Schneider and T. Schrabback and A. Secroun and E. Sefusatti and G. Seidel and S. Serrano and C. Sirignano and G. Sirri and L. Stanco and J. Steinwagner and C. Surace and P. Tallada-Crespí and H. I. Teplitz and I. Tereno and R. Toledo-Moreo and F. Torradeflot and I. Tutusaus and E. A. Valentijn and L. Valenziano and T. Vassallo and A. Veropalumbo and Y. Wang and J. Weller and G. Zamorani and E. Zucca and A. Biviano and M. Bolzonella and E. Bozzo and C. Burigana and M. Calabrese and D. Di Ferdinando and J. A. Escartin Vigo and R. Farinelli and J. Gracia-Carpio 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 M. Bethermin and A. Blanchard and L. Blot and S. Borgani and A. S. Borlaff and S. Bruton and A. Calabro and G. Canas-Herrera and A. Cappi and C. S. Carvalho and T. Castro and K. C. Chambers and S. Contarini and A. R. Cooray and B. De Caro and G. Desprez and A. Díaz-Sánchez and S. Di Domizio and H. Dole and S. Escoffier and I. Ferrero and F. Finelli and F. Fornari and L. Gabarra and K. Ganga and J. García-Bellido and V. Gautard and E. Gaztanaga and F. Giacomini and G. Gozaliasl and A. Hall and H. Hildebrandt and J. Hjorth and O. Ilbert 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 J. Macias-Perez 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 L. Patrizii and A. Pezzotta and M. Pöntinen and V. Popa and C. Porciani and D. Potter and P. Reimberg and I. Risso and P. -F. Rocci and M. Sahlén and A. Schneider and M. Sereno and P. Simon and A. Spurio Mancini and G. Testera and R. Teyssier and S. Toft and S. Tosi and A. Troja and M. Tucci and J. Valiviita and D. Vergani and G. Verza and I. A. Zinchenko and G. A. Mamon and D. Scott},
journal= {arXiv preprint arXiv:2405.14015},
year = {2025}
}
备注
Accepted in A&A