PRIMUS+DEEP2: The Dependence of Galaxy Clustering on Stellar Mass and
  Specific Star Formation Rate at 0.2 < z < 1.2
  We present results on the clustering properties of galaxies as a function of
both stellar mass and specific star formation rate (sSFR) using data from the
PRIMUS and DEEP2 galaxy redshift surveys spanning 0.2 < z < 1.2. We use
spectroscopic redshifts of over 100,000 galaxies covering an area of 7.2 deg^2
over five separate fields on the sky, from which we calculate cosmic variance
errors. We find that the galaxy clustering amplitude is as strong of a function
of sSFR as of stellar mass, and that at a given sSFR, it does not significantly
depend on stellar mass within the range probed here. We further find that
within the star-forming population and at a given stellar mass, galaxies above
the main sequence of star formation with higher sSFR are less clustered than
galaxies below the main sequence with lower sSFR. We also find that within the
quiescent population, galaxies with higher sSFR are less clustered than
galaxies with lower sSFR, at a given stellar mass. We show that the galaxy
clustering amplitude smoothly increases with both increasing stellar mass and
decreasing sSFR, implying that galaxies likely evolve across the main sequence,
not only along it, before galaxies eventually become quiescent. These results
imply that the stellar mass to halo mass relation, which connects galaxies to
dark matter halos, likely depends on sSFR.
