An H{\alpha} Impression of Ly{\alpha} Galaxies at $z\simeq6$ with Deep JWST/NIRCam Imaging

Understand

We present a study of seven spectroscopically confirmed (Ly$\alpha$ emitting) galaxies at redshift $z\simeq6$ using the $JWST$/NIRCam imaging data.

• These galaxies, with a wide range of Ly$\alpha$ luminosities, were recently observed in a series of NIRCam broad- and medium-bands.
• We constrain the rest-frame UV/optical continua and measure the H$\alpha$ line emission of the galaxies using the combination of the $JWST$/NIRCam and archival $HST$/WFC3 infrared photometry.
• We further estimate their escape fractions of Ly$\alpha$ photons ($f_{\rm esc}^{\rm Ly\alpha}$) and the production efficiency of ionizing photons ($\xi_{\rm ion}$).