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Jones, Hannah \\\"Ubler, Hans-Walter Rix, Irene Shivaei, Jacopo Chevallard, Jan Scholtz, Joris Witstok, Kevin Hainline, Kristan Boyett, Lester Sandles, Marcia Rieke, Michael V. Maseda, Michele Perna, Mirko Curti, Peter Jakobsen, Pierre Ferruit, Rachana Bhatawdekar, Rebecca Bowler, Renske Smit, Ryan Endsley, Ryan Hausen, Sandro Tacchella, Santiago Arribas, Stefano Carniani, Stephane Charlot, Tim Rawle, Tobias J. Looser, William M. Baker, Zhiyuan Ji, Zuyi Chen","submitted_at":"2023-02-24T18:31:44Z","abstract_excerpt":"We report the discovery of a remarkable Ly$\\alpha$ emitting galaxy at z = 7.2782, JADES-GS-z7-LA, with EW$_0$(Ly$\\alpha$) $= 388.0 \\pm 88.8$\\AA and UV magnitude -17.0. The spectroscopic redshift is confirmed via rest-frame optical lines [O II], H$\\beta$ and [O III] in its JWST/NIRSpec Micro-Shutter Assembly (MSA) spectrum. The Ly$\\alpha$ line is detected in both lower resolution PRISM as well as medium resolution G140M grating spectra. 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