We propose to conduct the first complete and comprehensive census of massive galaxies at very high redshift: 4 < z < 6. We will use two nights with Gemini/FLAMINGOS2 to obtain very deep imaging in two new, purpose-built medium-band NIR filters. By eradicating the largest source of low-z interlopers from a 4 < zphot < 6 selected sample, these new medium band data enable reliable and robust identification of 4 < z < 6 galaxies, which cannot be done with existing data. When combined with existing data from ZFOURGE and other legacy surveys, these new medium band filters are the key to constructing the first representative sample of massive galaxies in this regime.
Publications using this program's data
[data][ADS] Introducing the FLAMINGOS-2 Split-K Medium-band Filters: The Impact on Photometric Selection of High-z Galaxies in the FENIKS-pilot survey