New constraints on the average escape fraction of Lyman continuum radiation in z ∼ 4 galaxies from the VIMOS Ultra Deep Survey (VUDS)
Determining the average fraction of Lyman continuum (LyC) photons escaping
high redshift galaxies is essential for understanding how reionization
proceeded in the z>6 Universe. We want to measure the LyC signal from a sample
of sources in the Chandra Deep Field South (CDFS) and COSMOS fields for which
ultra-deep VIMOS spectroscopy as well as multi-wavelength Hubble Space
Telescope (HST) imaging are available.
We select a sample of 46 galaxies at