conclude the paper in Section \[sec:summary\] by describing further improvements needed in the field to determine the IMF of the galaxies in the high redshift universe. Throughout the paper we refer to the IMF slope of $\Gamma=-1.35$ computed by @Salpeter1955 as the Salpeter IMF. We assume various IMFs and a cosmology with [[*Hubble*]{}]{}$= 70$ km/s/Mpc, $\Omega_\Lambda=0.7$ and $\Omega_m= 0.3$. All magnitudes are expressed using the AB system.

Observations & Data {#sec:EW_calc}
===================

Galaxy Sample Selection {#sec:sample_selection}
-----------------------

The sample used in this study was selected from the ZFIRE [@Nanayakkara2016] spectroscopic survey, which also consists of photometric data from the ZFOURGE survey [@Straatman2016]. In this section, we describe the sample selection process from the ZFIRE survey for our analysis.

ZFIRE is a spectroscopic redshift survey of star-forming galaxies at $1.5<z<2.5$, which utilized the MOSFIRE instrument [@McLean2012] on Keck-I to primarily study galaxy properties in rich environments. ZFIRE has observed $\sim300$ galaxy redshifts with typical absolute accuracy of $\mathrm{\sim15\ kms^{-1}}$ and derived basic galaxy properties using multiple emission line diagnostics. @Nanayakkara2016 give full details on the ZFIRE survey. In this study we use the subset of ZFIRE galaxies observed in the COSMOS field [@Scoville2007] based on a stellar mass limited sample reaching 