Stars $11 Rebuy aq with a raise behind

[Eagles]

PokerStars No-Limit Hold'em Tourney, Big Blind is t1600 (9 handed) converter

MP2 (t45875)
MP3 (t58020)
CO (t25246)
Hero (t54555)
SB (t47189)
BB (t26435)
UTG (t52186)
UTG+1 (t51520)
MP1 (t52064)

Preflop: Hero is Button with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img].
UTG calls t1600, <font color="#666666">4 folds</font>, <font color="#CC3333">CO raises to t6475</font>, <font color="#666666"> Hero?</font>

No reads on the raiser just got moved to the table do I shove or do I fold?