Would you lay this down?

So I was playing in a 1/2 NL cash game, max 250 buyin last night. I was UTG and was dealt AA. I raise to 10, pretty standard raise at this table. Folds around to the CO, who calls, and button who calls and the blinds fold. Flop comes 579 rainbow. I lead out for 30, CO folds, button calls. Turn is a 3, putting two to a flush on the board. I lead out for 75, button reraises all in for an additional 90, I have 81 dollars left, having started the hand with 180 or so. Would you lay down your AA? Note that I do not have a read on this opponent due to the fact that he was a relatively new player to the table and I hadn't noticed anything particular about his play yet.

Ryan