AQo hand - turn decision (playalong)

[NAU_Player]

I'm posting this hand primarily as a learning tool for the inexperienced players on the boards. Please grunch on your first post, then see what other people say.

This is the first orbit at the table for you, and the first time you've seen the villian in a hand.

Party Poker 0.5/1 Hold'em (8 handed) converter

Preflop: Hero is UTG with Q[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises</font>, <font color="#666666">4 folds</font>, Button calls, <font color="#666666">2 folds</font>.

Flop: (5.50 SB) 9[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, Button calls.

Turn: (3.75 BB) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>

What is your action for the rest of the hand, and why?
What range of hands do you think villian has, and why?