Searching for Emission Lines at z>11: The Role of Damped Lyman-α and Hints About the Escape of Ionizing Photons

We describe new ultra-deep James Webb Space Telescope (JWST) NIRSpec PRISM and grating spectra for the galaxies JADES-GS-z11-0 (z_{\mathrm{spec}} = 11.122^{+0.005}_{-0.003}) and JADES-GS-z13-0 (z_{\mathrm{spec}} = 13.20^{+0.03}_{-0.04}), the most distant spectroscopically-confirmed galaxy discovered in the first year of JWST observations. The extraordinary depth of these observations (75 hours and 56 hours,... Show more