ALMA-IM. IX. SiO outflows in massive protoclusters

We find median outflow masses, momenta, and kinetic energies of ~0.3M_{sun}_, 4M_{sun}_km/s, and 10^45^erg, respectively. Median outflow lifetimes are 6000 yr, yielding median mass, momentum, and energy rates of dM/dt=10^-4.4^M_{sun}_/yr, dP/dt=10^-3.2^M_{sun}_km.s^-1^.yr^-1^, and dE/dt=1L_{sun}_.

We analyze these outflow properties in the aggregate in each field. We find correlations between field-aggregated SiO outflow properties and total mass in cores (~3{sigma}-5{sigma}), and no correlations above 3{sigma} with clump mass, clump luminosity, or clump luminosity-to-mass ratio. We perform a linear regression analysis and find that the correlation between field-aggregated outflow mass and total clump mass-which has been previously described in the literature-may actually be mediated by the relationship between outflow mass and total mass in cores.