\begin{table}%t3 
\caption{Adopted [Fe/H] values for the Cepheids in the sample.} 
\begin{tabular}{rrrr} \hline \hline 
Name       & [ Fe/H]  & Name       & [ Fe/H] \\  
\hline 
\par
AQ Pup   & $-0.14$ (5)  &  SZ Aql   & +0.17 $\pm$ 0.04 (2) \\
BB Sgr   & +0.08 (6)  & SZ Tau   & +0.08 (4) \\ %  +0.07 MOT -0.01 FC
beta Dor & $-0.01$ (4)  &  T Mon    & +0.15 $\pm$ 0.03 (2) \\
BF Oph   & +0.00 (6)  & TT Aql   & +0.10 $\pm$ 0.02 (2) \\
BG Lac   & $-0.01$ (4)  & T Vel    & $-0.02$ (5) \\ %  +0.10 MOT -0.02 LEM
BN Pup   & +0.01 (4)  &  T Vul    & +0.01 $\pm$ 0.02 (3) \\
CD Cyg   & +0.11 $\pm$ 0.05 (2)  & U Car    & +0.23 (7) \\ % +0.17 \\
CV Mon   & $-0.03$ (4)  &  U Nor    & +0.13 (7) \\ % +0.07\\
del Cep  & +0.08 (4,6)  &  U Sgr    & +0.08 $\pm$ 0.02 (1) \\
DT Cyg   & +0.11 (4)  & UU Mus   & +0.17 (7) \\ %   +0.11\\
eta Aql  & +0.08 $\pm$ 0.02 (1)  & U Vul    & +0.11 $\pm$ 0.03 (1) \\
FF Aql   & +0.02 (4) & V340 Nor & +0.00 (4) \\ %  -0.18 FC
FM Aql   & +0.08 (4) & V350 Sgr & +0.18 (6) \\
FN Aql   & $-0.02$ (4)  & V496 Aql & +0.05 (4)\\
KN Cen   & +0.23 (7)  &  V Car    & +0.02 (7,8) \\ % MOT -0.07, LEM -0.06
KQ Sco   & +0.16 (4)  &  V Cen    & +0.04 (4) \\  %  +0.04MOT  -0.14 FC
l Car    & +0.13 (7,8)  &  VW Cen   & +0.04 (7) \\ %     -0.02\\
LS Pup   & $-0.10$ (7)  &  VY Car   & +0.03 (8) \\ %  -0.06\\
RS Pup   & +0.17 (5)  &  VZ Cyg   & +0.05 (6) \\
RT Aur   & +0.06 (4) & VZ Pup   & $-0.15$ (4) \\  %-0.17 MOT -0.37 LEM
RU Sct   & +0.01 (4) & W Sgr    & +0.03 $\pm$ 0.03 (1) \\
RY Sco   & +0.09 (6)  & WZ Car   & +0.14 (7) \\ %     +0.08\\
RY Vel   & $-0.03$ (5)  & WZ Sgr   & +0.20 $\pm$ 0.05 (2)\\
RZ Vel   & $-0.07$ (5)  &     X Cyg    & +0.10 $\pm$ 0.03 (2) \\
S Mus    & +0.19 (7)  &   X Lac    & $-0.02$ (6) \\
S Nor    & +0.05 (4)  &   X Pup    & $-0.03$ $\pm$ 0.03 (2) \\
S Sge    & +0.10 $\pm$ 0.02 (1) & X Sgr    & -0.29 (4)\\
SS Sct   & +0.06 (6)  & XX Cen   & +0.10 (7) \\ %  +0.04\\
SU Cas   & $-0.01$ (4)  & Y Lac    & $-0.04$ $\pm$ 0.06 (3)\\
SU Cyg   & $-0.03$ $\pm$ 0.04 (3)  & Y Oph    & +0.05 (4) \\
S Vul    & $-0.03$ $\pm$ 0.03 (2)  & Y Sgr    & +0.05 $\pm$ 0.03 (3)\\
SV Vul   & +0.05 $\pm$ 0.04 (2)  & YZ Sgr   & +0.08 (1) \\
SW Vel   & $-0.03$ (4,5)  &  zeta Gem & +0.04 (4) \\ % -0.19 (MOT, -0.13), +0.00 (LEM, +0.07) \\
SX Vel   & $-0.03$ (5)  &   Z Lac    & +0.01 $\pm$ 0.03 (2) \\
\hline 
\end{tabular} 
\smallskip
\par
1 = Luck \& Andrievsky (\cite{Luck2004});
2 = Kovtyukh et~al. (\cite{Kovtyukh2005b});
3 = Andrievsky et~al. (\cite{Andrievsky2005});
%
4 = Andrievsky et~al. (\cite{Andrievsky2003}); % AN, 324, 532
5 = Luck et~al. (\cite{Luck2003}); % A&A 401, 939
6 = Luck et~al. (\cite{Luck2006}); % AJ, 132, 902
%
7 = Mottini et~al. (\cite{Mottini2008});
8 = Lemasle et~al. (\cite{Lemasle2007}).
%= Fry \& Carney (1997);
\label{Tab-metal}
\end{table}