Euclid 快速数据发布 (Q1) 深空域北区超低温矮星
太阳与恒星天体物理
2025-03-31 v1 地球与行星天体物理
星系天体物理
天体物理仪器与方法
摘要
超低温矮星 (UCD) 包含最低质量的恒星和棕矮星，定义了恒星亚星际边界。它们在理解亚星际物理方面具有重要潜力；然而，这些物体因低亮度而具有检测挑战。Euclid 调查的广阔覆盖范围和深层灵敏度将使确认和特征化的 UCD 数量提高几个数量级。在本研究中，我们利用 Euclid 快速数据发布 (Q1) 尤其是深入查看已知和新的 UCD 在 Euclid 深空域北区（22.9 平方度，下至 JE = 24.5 幅度）中，以了解利用无孔 Euclid 光谱的优势。我们编译了已知 UCD 的比较样本，并使用其光谱演示 Euclid 能够通过模板匹配方法推导光谱类型。该方法随后应用于新识别候选者的光谱。我们确认其中 33 个候选者为新的 UCD，光谱类型范围为 M7 到 T1，JE 为 17 到 21 幅度。我们查看它们在颜色-颜色图中的位置，并将其与 QSOs 的预期颜色进行比较。提供了一个机器可读目录供进一步研究，包含比较样本和新识别的 UCD，以及它们的光谱分类，其中 Q1 光谱质量允许可置信地确定。
引用
@article{arxiv.2503.22559,
title = {Euclid Quick Data Release (Q1) Ultracool dwarfs in the Euclid Deep Field North},
author = {A. Mohandasan and R. L. Smart and C. Reylé and V. Le Brun and A. Pérez-Garrido and E. Bañados and B. Goldman and S. L. Casewell and M. R. Zapatero Osorio and T. Dupuy and M. Rejkuba and E. L. Martín and C. Dominguez-Tagle and M. {Ž}erjal and N. Huélamo and N. Lodieu and P. Cruz and R. Rebolo and M. W. Phillips and J. -Y. Zhang and N. Aghanim and B. Altieri and A. Amara and S. Andreon and N. Auricchio and C. Baccigalupi and M. Baldi and A. Balestra and S. Bardelli and P. Battaglia and A. Biviano and A. Bonchi 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 A. Costille and F. Courbin and H. M. Courtois and M. Cropper and A. Da Silva and H. Degaudenzi and G. De Lucia and H. Dole and M. Douspis and F. Dubath and X. Dupac and S. Dusini and S. Escoffier and M. Farina and F. Faustini and S. Ferriol and S. Fotopoulou and M. Frailis and E. Franceschi and S. Galeotta and K. George and W. Gillard and B. Gillis and C. Giocoli and J. Gracia-Carpio and B. R. Granett and A. Grazian and F. Grupp and S. V. H. Haugan and J. Hoar and W. Holmes and I. M. Hook and F. Hormuth and A. Hornstrup and K. Jahnke and M. Jhabvala and E. Keihänen and S. Kermiche and A. Kiessling and B. Kubik and K. Kuijken and M. Kümmel and M. Kunz and H. Kurki-Suonio and Q. Le Boulc'h and A. M. C. Le Brun and D. Le Mignant 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 S. Marcin and O. Marggraf and M. Martinelli and N. Martinet and F. Marulli and R. Massey and E. Medinaceli and S. Mei and Y. Mellier and M. Meneghetti and E. Merlin and G. Meylan and A. Mora and M. Moresco and L. Moscardini and R. Nakajima and C. Neissner and S. -M. Niemi and C. Padilla and S. Paltani 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 R. Saglia and Z. Sakr and D. Sapone and B. Sartoris and J. A. Schewtschenko and M. Schirmer and P. Schneider and T. Schrabback and A. Secroun and G. Seidel and S. Serrano and P. Simon and C. Sirignano and G. Sirri and L. Stanco and J. Steinwagner and C. Surace and P. Tallada-Crespí and A. N. Taylor and I. Tereno and R. Toledo-Moreo and F. Torradeflot and A. Tsyganov and I. Tutusaus and L. Valenziano and J. Valiviita and T. Vassallo and G. Verdoes Kleijn and A. Veropalumbo and D. Vibert and Y. Wang and J. Weller and A. Zacchei and G. Zamorani and F. M. Zerbi and E. Zucca and J. Martín-Fleitas and V. Scottez},
journal= {arXiv preprint arXiv:2503.22559},
year = {2025}
}
备注
14 pages, 9 figures, 2 tables