Vertex operators forAdS 3 background with Ramond-Ramondflux

Inorder tostudy vertex operatorsfortheType IIBsuperstring onAdS space, we derive supersymmetric constraint equations for the vertex operators in AdS3S 3 backgrounds with Ramond-Ramond flux, using Berkovits-Vafa-Witten variables. These constraints are solved to compute the vertex operators and show that they satisfy the linearizedD=6,N=(2;0) equations of motion for a super- gravity and tensor multiplet expanded around theAdS3S 3 spacetime.