I hit my ace on the turn, but it's a fold?

[iheartponeez]

$0.25/$0.5 No Limit Holdem
6 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$10.10</font>)
Hero (<font color="#0000cc">$50.75</font>)
CO (<font color="#0000cc">$40.25</font>)
BTN (<font color="#0000cc">$46.35</font>)
SB (<font color="#0000cc">$7.25</font>)
BB (<font color="#0000cc">$49.00</font>)

Pre-flop: ($0.75, 6 players) Hero is UTG+1 J[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/spade.gif[/img]
<font color="#777777">1 fold</font>, <font color="#cc0000">Hero raises to $2</font>, <font color="#777777">1 fold</font>, BTN calls $2, <font color="#777777">1 fold</font>, BB calls $1.5

Flop: 3[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img] ($6.25, 3 players)
BB checks, <font color="#cc0000">Hero bets $4.5</font>, BTN calls $4.5, <font color="#777777">BB folds</font>

Turn: A[img]/images/graemlins/club.gif[/img] ($15.25, 2 players)
<font color="#cc0000">Hero bets $9</font>, <font color="#cc0000">BTN goes all-in $39.85</font>


This has to be a regular style laydown, right? Baluga? Probably 2pair?