Remnant mass, spin, and recoil from spin aligned black-hole binaries II: New simulations, recoil fit and hangup studies

We present the results of 40 new simulations of nonprecessing black hole binaries with mass ratios $q=m_1/m_2$ in the range of $1/2 \leq q\leq 1$ and individual spins covering the parameter space $-1<\alpha_{1,2}<1$. This allows us to assess the accuracy of our formulae for the remnant black hole mass, spin and recoil. We find excellent agreement (typical errors $\sim0.1\%$) for the mass and spin, but $\sim5\%$ for the recoil. We hence perform 10 additional simulations of nonspinning black hole binaries with mass ratios covering the range of $1/10 < q < 1$ and find an improved fitting for the recoil velocity.