Former President Barack Obama is now officially a resident of Martha’s Vineyard, after having closed on the Edgartown estate of Boston Celtics owner Wyc Grousbeck. The 29-acre Edgartown property on Turkeyland Cove Road was purchased by Turkeyland Cove Nominee Trust for $11.75 million, according to Dukes County Registry of Deeds records. The property had been on the market for $14.8 million, and was assessed at $15.1 million.