AdS6/CFT5 with O7-planes

Type IIB AdS6 solutions with orientifold 7-planes are constructed. The geometry is a warped product of AdS6 and S2 over a Riemann surface Σ and the O7-planes correspond to a particular type of puncture on Σ. The solutions are identified as near- horizon limits of (p, q) 5-brane webs with O7-planes. The dual 5d SCFTs have relevant deformations to linear quiver gauge theories which have SO(·) or USp(·) nodes or SU(·) nodes with hypermultiplets in symmetric or antisymmetric representations, in addition to SU(·) nodes with fundamental hypermultiplets. The S5 free energies are obtained holographically and matched to field theory computations using supersymmetric localization to support the proposed dualities.