Call down with TPNK?

[MexKrax]

Button just sat down at the table so I have no reads on him. SB is loose an passive 40/7/0.63.

Was just calling down here the right play? I kinda felt like I was behind to an ace with a better kicker after getting 3 bet preflop and then raised on the flop, but I wasn't sure enough to fold.

Party Poker 3/6 Hold'em (6 max, 6 handed) converter

Preflop: Hero is CO with A[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">Button 3-bets</font>, SB calls, <font color="#666666">1 fold</font>, Hero calls.

Flop: (10 SB) A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, SB folds, Hero calls.

Turn: (7 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero calls.

River: (9 BB) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

Final Pot: 9 BB