Euclid: ERO -- NISP-only sources and the search for luminous $z=6-8$ galaxies
Creators: name: Weaver, J. R.
name: Taamoli, S.
name: McPartland, C. J. R.
name: Zalesky, L.
name: Allen, N.
name: Toft, S.
name: Sanders, D. B.
name: Atek, H.
name: Bowler, R. A. A.
name: Stern, D.
name: Conselice, C. J.
name: Mobasher, B.
name: Szapudi, I.
name: Eisenhardt, P. R. M.
name: Murphree, G.
name: Valdes, I.
name: Ito, K.
name: Belladitta, S.
name: Oesch, P. A.
name: Serjeant, S.
name: Mortlock, D. J.
name: Hatch, N. A.
name: Kluge, M.
name: Milvang-Jensen, B.
name: Rodighiero, G.
name: Bañados, E.
name: Diego, J. M.
name: Gavazzi, R.
name: Congedo, G.
name: Shuntov, M.
name: Dole, H.
name: Rocci, P. -F.
name: Saifollahi, T.
name: Miluzio, M.
name: Ezziati, M.
name: Hughes, A. C. N.
name: Cuillandre, J. -C.
name: Laureijs, R.
name: Paltani, S.
name: Schirmer, M.
name: Stone, C.
name: Aghanim, N.
name: Altieri, B.
name: Amara, A.
name: Andreon, S.
name: Auricchio, N.
name: Baldi, M.
name: Balestra, A.
name: Bardelli, S.
name: Bender, R.
name: Bodendorf, C.
name: Bonino, D.
name: Branchini, E.
name: Brescia, M.
name: Brinchmann, J.
name: Camera, S.
name: Capobianco, V.
name: Carbone, C.
name: Cardone, V. F.
name: Carretero, J.
name: Casas, S.
name: Castander, F. J.
name: Castellano, M.
name: Cavuoti, S.
name: Cimatti, A.
name: Conversi, L.
name: Copin, Y.
name: Corcione, L.
name: Courbin, F.
name: Courtois, H. M.
name: Da Silva, A.
name: Degaudenzi, H.
name: Di Giorgio, A. M.
name: Dinis, J.
name: Douspis, M.
name: Dubath, F.
name: Dupac, X.
name: Ealet, A.
name: Farina, M.
name: Farrens, S.
name: Ferriol, S.
name: Fotopoulou, S.
name: Frailis, M.
name: Franceschi, E.
name: Franzetti, P.
name: Galeotta, S.
name: Gillard, W.
name: Gillis, B.
name: Giocoli, C.
name: Gómez-Alvarez, P.
name: Grazian, A.
name: Grupp, F.
name: Guzzo, L.
name: Haugan, S. V. H.
name: Hoar, J.
name: Hoekstra, H.
name: Holmes, W.
name: Hook, I.
name: Hormuth, F.
name: Hornstrup, A.
name: Hudelot, P.
name: Jahnke, K.
name: Jhabvala, M.
name: Keihänen, E.
name: Kermiche, S.
name: Kiessling, A.
name: Kitching, T.
name: Kubik, B.
name: Kümmel, M.
name: Kunz, M.
name: Kurki-Suonio, H.
name: Lahav, O.
name: Mignant, D. Le
name: Ligori, S.
name: Lilje, P. B.
name: Lindholm, V.
name: Lloro, I.
name: Maino, D.
name: Maiorano, E.
name: Mansutti, O.
name: Marggraf, O.
name: Markovic, K.
name: Martinet, N.
name: Marulli, F.
name: Massey, R.
name: Masters, D. C.
name: Maurogordato, S.
name: McCracken, H. J.
name: Medinaceli, E.
name: Mei, S.
name: Melchior, M.
name: Mellier, Y.
name: Meneghetti, M.
name: Merlin, E.
name: Meylan, G.
name: Mohr, J. J.
name: Moresco, M.
name: Moscardini, L.
name: Nakajima, R.
name: Nichol, R. C.
name: Niemi, S. -M.
name: Padilla, C.
name: Pasian, F.
name: Pedersen, K.
name: Percival, W. J.
name: Pettorino, V.
name: Pires, S.
name: Polenta, G.
name: Poncet, M.
name: Popa, L. A.
name: Pozzetti, L.
name: Raison, F.
name: Renzi, A.
name: Rhodes, J.
name: Riccio, G.
name: Romelli, E.
name: Roncarelli, M.
name: Rossetti, E.
name: Saglia, R.
name: Sapone, D.
name: Schneider, P.
name: Schrabback, T.
name: Secroun, A.
name: Seidel, G.
name: Serrano, S.
name: Sirignano, C.
name: Sirri, G.
name: Stanco, L.
name: Tallada-Crespí, P.
name: Taylor, A. N.
name: Teplitz, H. I.
name: Tereno, I.
name: Toledo-Moreo, R.
name: Tutusaus, I.
name: Valenziano, L.
name: Vassallo, T.
name: Veropalumbo, A.
name: Wang, Y.
name: Weller, J.
name: Zucca, E.
name: Burigana, C.
name: Castignani, G.
name: Sakr, Z.
name: Scottez, V.
name: Viel, M.
name: Simon, P.
name: Martín-Fleitas, J.
name: Scott, D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: This paper presents a search for high redshift galaxies from the Euclid Early Release Observations program "Magnifying Lens." The 1.5 deg$^2$ area covered by the twin Abell lensing cluster fields is comparable in size to the few other deep near-infrared surveys such as COSMOS, and so provides an opportunity to significantly increase known samples of rare UV-bright galaxies at $z\approx6-8$ ($M_{\rm UV}\lesssim-22$). Beyond their still uncertain role in reionisation, these UV-bright galaxies are ideal laboratories from which to study galaxy formation and constrain the bright-end of the UV luminosity function. Of the 501994 sources detected from a combined $Y_{\rm E}$, $J_{\rm E}$, and $H_{\rm E}$ NISP detection image, 168 do not have any appreciable VIS/$I_{\rm E}$ flux. These objects span a range in spectral colours, separated into two classes: 139 extremely red sources; and 29 Lyman-break galaxy candidates. Best-fit redshifts and spectral templates suggest the former is composed of both $z\gtrsim5$ dusty star-forming galaxies and $z\approx1-3$ quiescent systems. The latter is composed of more homogeneous Lyman break galaxies at $z\approx6-8$. In both cases, contamination by L- and T-type dwarfs cannot be ruled out with Euclid images alone. Additional contamination from instrumental persistence is investigated using a novel time series analysis. This work lays the foundation for future searches within the Euclid Deep Fields, where thousands more $z\gtrsim6$ Lyman break systems and extremely red sources will be identified.
description: 22 pages, 13 figures, paper submitted as part of the A&amp;A special issue `Euclid on Sky', which contains Euclid key reference papers and first results from the Euclid Early Release Observations