2024/09/10 by Gareth C. Jones, Andrew J. Bunker, Jones, Gareth C. +40 · 1 citation
Engineering · #Calibration and Measurement Techniques
paper · pdf · doi:10.48550/arxiv.2409.06405
Lyα is the transition to the ground state from the first excited state of hydrogen (the most common element). Resonant scattering of this line by neutral hydrogen greatly impedes its emergence from galaxies, so the fraction of galaxies emitting Lyα is a tracer of the neutral fraction of the intergalactic medium (IGM), and thus the history of reionisation. In previous works, we used early JWST/NIRSpec data from the JWST Advanced Deep Extragalactic Survey (JADES) to classify and characterise Lyα emitting galaxies (LAEs). This survey is approaching completion, and the current sample is nearly an order of magnitude larger. From a sample of 795 galaxies in JADES at 4.0