AdS 4 solutions of massive IIA from dyonic ISO(7) supergravity

Explicit formulae are given for the consistent truncation of massive type iia supergravity on the six-sphere to the su(3)-invariant sector of d = 4 $$ mathcal{n}=8 $$ supergravity with dyonic iso(7) gauging. these formulae are then used to construct ads4 solutions of massive type iia via uplift on s 6 of the critical points of the d = 4 supergravity with at least su(3) symmetry. we find a new $$ mathcal{n}=1 $$ solution with su(3) symmetry, a new non-supersymmetric solution with so(6) symmetry, and recover previously known solutions. we quantise the fluxes, calculate the gravitational free energies of the solutions and discuss the stability of the non-supersymmetric ones. among these, a (previously known) g2-invariant solution is found to be stable.