Reconciling the Results of the z~2 MOSDEF and KBSS-MOSFIRE Surveys
  The combination of the MOSDEF and KBSS-MOSFIRE surveys represents the largest
joint investment of Keck/MOSFIRE time to date, with ~3000 galaxies at
1.4<=z<=3.8, roughly half of which are at z~2. MOSDEF is photometric- and
spectroscopic-redshift selected with a rest-optical magnitude limit, while
KBSS-MOSFIRE is primarily selected based on rest-UV colors and a rest-UV
magnitude limit. Analyzing the two surveys in a uniform manner with consistent
spectral-energy-distribution (SED) models, we find that the MOSDEF z~2 targeted
sample has a higher median M_* and redder rest U-V color than the KBSS-MOSFIRE
z~2 targeted sample, and a smaller median SED-based SFR and sSFR (SFR(SED) and
sSFR(SED)). Specifically, MOSDEF targeted a larger population of red galaxies
with U-V and V-J >=1.25, while KBSS-MOSFIRE contains more young galaxies with
intense star formation. Despite these differences in the z~2 targeted samples,
the subsets of the surveys with multiple emission lines detected and analyzed
in previously published work are much more similar. All median host-galaxy
properties with the exception of stellar population age -- i.e., M_*, SFR(SED),
sSFR(SED), A_V, and UVJ colors -- agree within the uncertainties. Additionally,
when uniform emission-line fitting and stellar Balmer absorption correction
techniques are applied, there is no significant offset between the two samples
in the [OIII]$\lambda$5008/H$\beta$ vs. [NII]$\lambda$6585/H$\alpha$ diagnostic
diagram, in contrast to previously-reported discrepancies. We can now combine
the MOSDEF and KBSS-MOSFIRE surveys to form the largest z~2 sample with
moderate-resolution rest-optical spectra and construct the fundamental scaling
relations of star-forming galaxies during this important epoch.
