Euclid准备：I. Euclid广域巡天
宇宙学与河外天体物理
2022-06-29 v1 天体物理仪器与方法
摘要
Euclid是欧空局的一项任务，旨在通过弱引力透镜和星系成团来约束暗能量和引力的性质。它将在可见光和近红外波段进行广域成像和光谱巡天(EWS)，覆盖约15000平方度的河外天区，为期六年。广角望远镜和仪器针对原始点扩散函数和减少杂散光进行了优化，可产生非常清晰的图像。本文介绍了Euclid参考巡天的构建：EWS指向序列、深场、用于校准的辅助场，以及Euclid在拉格朗日L2点轨道上以步进凝视模式运行时的航天器运动序列。每个EWS指向有四个抖动帧；我们在像素级模拟抖动模式以分析有效覆盖范围。我们使用最新的天空背景模型来定义Euclid感兴趣区域(RoI)。参考巡天的构建受到校准节奏、航天器约束和背景水平的严格限制；还考虑了与地面覆盖的协同作用。通过专门构建的软件，优化优先选择最佳天区、产生紧凑覆盖并确保热稳定性，我们生成了辅助场和深场观测的时间表，并安排了RoI的EWS过境观测。由此产生的参考巡天RSD_2021A满足所有约束，是最终解决方案的良好代理。其广域巡天覆盖14500平方度。在其覆盖范围内达到的极限AB星等(5σ点源)估计为26.2(可见光)和24.5(近红外)；对于光谱，Hα线通量极限在1600 nm处为2×10⁻¹⁶ erg cm⁻² s⁻¹；对于弥散发射，表面亮度极限为29.8(可见光)和28.4(近红外) mag arcsec⁻²。
引用
@article{arxiv.2108.01201,
title = {Euclid preparation: I. The Euclid Wide Survey},
author = {R. Scaramella and J. Amiaux and Y. Mellier and C. Burigana and C. S. Carvalho and J. -C. Cuillandre and A. Da Silva and A. Derosa and J. Dinis and E. Maiorano and M. Maris and I. Tereno and R. Laureijs and T. Boenke and G. Buenadicha and X. Dupac and L. M. Gaspar Venancio and P. Gómez-Álvarez and J. Hoar and J. Lorenzo Alvarez and G. D. Racca and G. Saavedra-Criado and J. Schwartz and R. Vavrek and M. Schirmer and H. Aussel and R. Azzollini and V. F. Cardone and M. Cropper and A. Ealet and B. Garilli and W. Gillard and B. R. Granett and L. Guzzo and H. Hoekstra and K. Jahnke and T. Kitching and M. Meneghetti and L. Miller and R. Nakajima and S. M. Niemi and F. Pasian and W. J. Percival and M. Sauvage and M. Scodeggio and S. Wachter and A. Zacchei and N. Aghanim and A. Amara and T. Auphan and N. Auricchio and S. Awan and A. Balestra and R. Bender and C. Bodendorf and D. Bonino and E. Branchini and S. Brau-Nogue and M. Brescia and G. P. Candini and V. Capobianco and C. Carbone and R. G. Carlberg and J. Carretero and R. Casas 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 A. Costille and F. Courbin and H. Degaudenzi and M. Douspis and F. Dubath and C. A. J. Duncan and S. Dusini and S. Farrens and S. Ferriol and P. Fosalba and N. Fourmanoit and M. Frailis and E. Franceschi and P. Franzetti and M. Fumana and B. Gillis and C. Giocoli and A. Grazian and F. Grupp and S. V. H. Haugan and W. Holmes and F. Hormuth and P. Hudelot 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 S. Ligori and P. B. Lilje and I. Lloro and O. Mansutti and O. Marggraf and K. Markovic and F. Marulli and R. Massey and S. Maurogordato and M. Melchior and E. Merlin and G. Meylan and J. J. Mohr and M. Moresco and B. Morin and L. Moscardini and E. Munari and R. C. Nichol and C. Padilla and S. Paltani and J. Peacock and K. Pedersen and V. Pettorino and S. Pires and M. Poncet and L. Popa and L. Pozzetti and F. Raison and R. Rebolo and J. Rhodes and H. -W. Rix and M. Roncarelli and E. Rossetti and R. Saglia 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. L. Starck and P. Tallada-Crespí and D. Tavagnacco and A. N. Taylor and H. I. Teplitz and R. Toledo-Moreo and F. Torradeflot and M. Trifoglio and E. A. Valentijn and L. Valenziano and G. A. Verdoes Kleijn and Y. Wang and N. Welikala and J. Weller and M. Wetzstein and G. Zamorani and J. Zoubian and S. Andreon and M. Baldi and S. Bardelli and A. Boucaud and S. Camera and G. Fabbian and R. Farinelli and J. Graciá-Carpio and D. Maino and E. Medinaceli and S. Mei and C. Neissner and G. Polenta and A. Renzi and E. Romelli and C. Rosset and F. Sureau and M. Tenti and T. Vassallo and E. Zucca and C. Baccigalupi and A. Balaguera-Antolínez and P. Battaglia and A. Biviano and S. Borgani and E. Bozzo and R. Cabanac and A. Cappi and S. Casas and G. Castignani and C. Colodro-Conde and J. Coupon and H. M. Courtois and J. Cuby and S. de la Torre and S. Desai and D. Di Ferdinando and H. Dole and M. Fabricius and M. Farina and P. G. Ferreira and F. Finelli and P. Flose-Reimberg and S. Fotopoulou and S. Galeotta and K. Ganga and G. Gozaliasl and I. M. Hook and E. Keihanen and C. C. Kirkpatrick and P. Liebing and V. Lindholm and G. Mainetti and M. Martinelli and N. Martinet and M. Maturi and H. J. McCracken and R. B. Metcalf and G. Morgante and J. Nightingale and A. Nucita and L. Patrizii and D. Potter and G. Riccio and A. G. Sánchez and D. Sapone and J. A. Schewtschenko and M. Schultheis and V. Scottez and R. Teyssier and I. Tutusaus and J. Valiviita and M. Viel and W. Vriend and L. Whittaker},
journal= {arXiv preprint arXiv:2108.01201},
year = {2022}
}
备注
43 pages, 51 figures, submitted to A&A