New $z>7$ Lyman-alpha Emitters in EGS: Evidence of an Extended Ionized Structure at $z\sim 7.7$

Intae Jung, Steven L. Finkelstein, Rebecca L. Larson +21

We perform a ground-based near-infrared spectroscopic survey using the Keck/MOSFIRE spectrograph to target Ly$\alpha$ emission at $7.0<z<8.2$ from 61 galaxies to trace the ionization st…