欧几里得：ERO——仅NISP源与对明亮$z=6-8$星系的搜寻
星系天体物理
2025-04-30 v1 宇宙学与河外天体物理
摘要
本文介绍了从欧几里得早期释放观测计划“放大透镜”中搜寻高红移星系的结果。双Abell透镜星系团场覆盖的1.5平方度区域，其大小与COSMOS等其他少数深度近红外巡天相当，因此为显著增加已知的z≈6-8处稀有紫外明亮星系（M_UV≲-22）样本提供了机会。除了它们在再电离中仍不确定的作用外，这些紫外明亮星系是研究星系形成和约束紫外光度函数亮端的理想实验室。在从组合的Y_E、J_E和H_E NISP探测图像检测到的501,994个源中，有168个没有明显的VIS/I_E流量。这些天体在光谱颜色上范围很广，分为两类：139个极红源；以及29个莱曼断裂星系候选体。最佳拟合红移和光谱模板表明，前者由z≳5的尘埃恒星形成星系和z≈1-3的宁静系统组成。后者由更均匀的z≈6-8的莱曼断裂星系组成。在这两种情况下，仅凭欧几里得图像无法排除L型和T型矮星的污染。使用新颖的时间序列分析研究了来自仪器持久性的额外污染。这项工作为未来在欧几里得深场中的搜寻奠定了基础，届时将识别出数千个z≳6的莱曼断裂系统和极红源。
引用
@article{arxiv.2405.13505,
title = {Euclid: ERO -- NISP-only sources and the search for luminous $z=6-8$ galaxies},
author = {J. R. Weaver and S. Taamoli and C. J. R. McPartland and L. Zalesky and N. Allen and S. Toft and D. B. Sanders and H. Atek and R. A. A. Bowler and D. Stern and C. J. Conselice and B. Mobasher and I. Szapudi and P. R. M. Eisenhardt and G. Murphree and I. Valdes and K. Ito and S. Belladitta and P. A. Oesch and S. Serjeant and D. J. Mortlock and N. A. Hatch and M. Kluge and B. Milvang-Jensen and G. Rodighiero and E. Bañados and J. M. Diego and R. Gavazzi and G. Congedo and M. Shuntov and H. Dole and P. -F. Rocci and T. Saifollahi and M. Miluzio and M. Ezziati and A. C. N. Hughes and J. -C. Cuillandre and R. Laureijs and S. Paltani and M. Schirmer and C. Stone and N. Aghanim and B. Altieri and A. Amara and S. Andreon and N. Auricchio and M. Baldi and A. Balestra and S. Bardelli and R. Bender 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 V. F. Cardone and J. Carretero and S. Casas and F. J. Castander and M. Castellano and S. Cavuoti and A. Cimatti and L. Conversi and Y. Copin and L. Corcione and F. Courbin and H. M. Courtois and A. Da Silva and H. Degaudenzi and A. M. Di Giorgio and J. Dinis and M. Douspis and F. Dubath and X. Dupac and A. Ealet and M. Farina and S. Farrens and S. Ferriol and S. Fotopoulou and M. Frailis and E. Franceschi and P. Franzetti and S. Galeotta 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 J. Hoar and H. Hoekstra and W. Holmes and I. Hook and F. Hormuth and A. Hornstrup and P. Hudelot and K. Jahnke and M. Jhabvala and E. Keihänen and S. Kermiche and A. Kiessling and T. Kitching and B. Kubik and M. Kümmel and M. Kunz and H. Kurki-Suonio and O. Lahav and D. Le Mignant 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 N. Martinet and F. Marulli and R. Massey and D. C. Masters and S. Maurogordato 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 J. J. Mohr and M. Moresco and L. Moscardini and R. Nakajima and R. C. Nichol and S. -M. Niemi and C. Padilla 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 A. Renzi and J. Rhodes and G. Riccio and E. Romelli and M. Roncarelli and E. Rossetti and R. Saglia 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 L. Stanco and P. Tallada-Crespí and A. N. Taylor and H. I. Teplitz and I. Tereno and R. Toledo-Moreo and I. Tutusaus and L. Valenziano and T. Vassallo and A. Veropalumbo and Y. Wang and J. Weller and E. Zucca and C. Burigana and G. Castignani and Z. Sakr and V. Scottez and M. Viel and P. Simon and J. Martín-Fleitas and D. Scott},
journal= {arXiv preprint arXiv:2405.13505},
year = {2025}
}
备注
22 pages, 13 figures, paper submitted as part of the A&A special issue `Euclid on Sky', which contains Euclid key reference papers and first results from the Euclid Early Release Observations