$27s AQ with TPTK on flop

[imsobroke]

I am lost in this hand, after the turn bet I'm pretty certain I'm beat but I just couldn't let it go on the flop.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Hand History converter Courtesy of PokerZion.com

Hero (t1500)
CO (t1490)
Button (t1400)
SB (t2190)
BB (t1200)
UTG (t1220)
UTG+1 (t1500)
MP1 (t1500)
MP2 (t1500)

Preflop: Hero is MP3 with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to t80</font>, <font color="#CC3333">CO raises to t140</font>, <font color="#666666">3 folds</font>, Hero calls t60.

Flop: (t310) 4[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t160</font>, <font color="#CC3333">CO raises to t320</font>, Hero calls t160.

Turn: (t950) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets t400</font>, Hero folds.

Final Pot: t1350