N = (8,0) AdS vacua of three-dimensional supergravity

We give a classification of fully supersymmetric chiral N = (8, 0) AdS(3) vacua in general three-dimensional half-maximal gauged supergravities coupled to matter. These theories exhibit a wealth of supersymmetric vacua with background isometries given by the supergroups OSp(8 vertical bar 2, R), F(4), SU(4 vertical bar 1, 1), and OSp(4*vertical bar 4), respectively. We identify the associated embedding tensors and the structure of the associated gauge groups. We furthermore compute the mass spectra around these vacua. As an off-spin we include results for a number of N = (7, 0) vacua with supergroups OSp(7 vertical bar 2, R) and G(3), respectively. We also comment on their possible higher-dimensional uplifts.