\begin{table}%t1
\caption{\label{tab1}Characteristics of the source in the considered sample}
%\centerline
 {\begin{tabular}{cccccc} 
\hline \hline
 Object  & log~($T_{\rm stellar}$) & Sp. type & Disk evolution & Age (Myr)& Ref.\\
\hline
HD 135~344              &   3.810 & F4Ve & Transition & $8 \pm 4$& 1, 3, 11\\
HD 169~142              &   3.914  & A5Ve & Transition & $\rm 6^{+6}_{-3}$ & 1, 4, 12\\
HD 34~282               &   3.941  & A3Vne &  Thin & 5 & 1, 5, 13\\
HD 97~048 	       &   4.000  & A0/B9Ve+sh & Thick & $4\pm 1$ & 1, 6\\
HD 34~700               &   3.774  & G0IVe &  Thick & $\rm 3 ^{+6}_{-3}$ & 1, 7\\  
RR Tau                 &   3.927  & A4e & Transition & $\rm 3^{+1}_{-2.6}$  & 1, 8, 9\\
HD 141~569              &   3.979 & A0Ve & Thin & 5 & 1, 5\\
BD +40$^{\circ}$ 4124  &   4.291 & B2Ve & Thick+Env. & $\rm 1^{+2}_{-0.9}$ & 1, 8, 14\\
CD --42$^{\circ}$ 11~721 &   4.470 & B0IVep & Thick+Env. & $\rm 0.5^{+2}_{-0.4}$ & 1, 10\\
LkH$\alpha$ 215        &   4.114 & B7  & Thick+Env. & 1 & 14\\
IRS 48	               &   ?     &  ? & Thin & $4\pm1$ & 2\\
Gomez Hamburger        &   ?    &  ? & Thick & ? & 15, 16\\
\hline
\end{tabular}}
\par
\smallskip
1: \citet{ack04},
2: \citet{gee07a},
3: \citet{dou06},
4: \citet{ram06},
5: \citet{mer04},
6: \citet{lag06},
7: \citet{tor04},
8: \citet{nat97},
9: \citet{ros99},
10: \citet{wan07},
11: \citet{bro07},
12: \citet{gra07},
13: \citet{pie03},
14: \citet{hil95},
15: \citet{rui87},
16: \citet{buj08}.
\par
\end{table}