The Fourstar Galaxy Evolution Survey (
ZFOURGE) is a
medium-band infrared imaging survey targeting galaxies at z>1 in the CDFS,
COSMOS, and UDS fields. The medium-band filters bracket the 4000Å break
at these redshifts allowing for precise photometric redshift determinations
Straatman et al., 2016,
Nanayakkara et al, 2016).
Following the methods of
Kriek, et al., 2011
, we use photometry from the ZFOURGE survey to construct
composite SEDs. We group galaxies together based on synthetic rest frame
EAZY. The observed photometry from these 'analogs' are
then all de-redshifted and scaled to provide impressive wavelength coverage of
the intrinsic SED. This allows for many research possibilities normally only
accessible with spectroscopy.
2016 letter, we use these composites to explore the
IRX-β relation, parameterizing the efficiency of dust reprocessing of UV
light for a large, mass-selected sample of galaxies at z~2.