\begin{table}%t4
 \caption{\label{tab:1}Best parameters for the BP Tau disk (CO~\jdu\ data and continuum).}
%\centerline
{
\begin{tabular}{|l|rl|l|}
 \hline\hline
 Assumed~ distance & $D$ (pc)~ = & 140 & \\
 \hline
 Systemic velocity & $V_{\rm LSR}$ (km.s$^{-1}$)~= & 6.71 & $\pm$ 0.05 \\
 Orientation & PA~ = & 57 & $\pm 4^{\circ} $ \\
 Inclination & $i$~ = & 28 & $\pm 2^{\circ} $ \\
 \hline
 Outer radius & $R_{\rm out}$ (AU)~ = & 122 & $\pm$ $10$ \\
 Turbulent linewidth  & $\Delta v$ (km~s$^{-1}$)~$=$ & 0.3&$\pm0.1$  \\
 \hline
 %\multicolumn{4}{|c|}{ } \\
 \multicolumn{4}{|c|}{Abundance \& H$_2$ density law:~~ $n(r) = n_{100} (\frac{r}{100 \rm{AU}})^{- s}$} \\[1mm]
 \dco~ reference$^{(a)}$ & $ X^{12}_{\rm TMC1}$~ = & $7\times 10^{-5}$ & - \\
  \dco~ abundance & $ X$(\dco)~ = & \bf{$4.3\times 10^{-7}$} &  $\pm$$0.4\times 10^{-7}$ \\
 \dco~ depletion &   $f$(\dco)~=         & 160  & $\pm$20 \\
 Density$^{(b)}$ & & & \\
 ~~~~ at 100 AU      & $n_{100}$ (cm$^{-3}$)~ = & $3.0\times 10^7$ & $\pm$$0.4\times 10^7$\\
 ~~~~ exponent       & $s$~=  & $3.0$ &$\pm$$0.2$ \\
 \hline
 %\multicolumn{4}{|c|}{ } \\
 \multicolumn{4}{|c|}{Temperature law:~~~ $T(r)~ = T_{100} (\frac{r}{100~\rm{AU}})^{-q}$ } \\
 Temperature$^{(c)}$   &  &  &  \\
 ~~~~ at 100 AU  & $T_{100}$ (K)~ = & 52 & $\pm$ 4\\ 
 ~~~~ exponent    & $q~\simeq$ & 0.0-0.5 &  \\
 ~~~assumed value & $q~=$ & 0.3 & \\
 \hline
 %\multicolumn{4}{|c|}{} \\
 \multicolumn{4}{|c|}{Velocity law:~~~~~~ $V(r) = V_{100} (\frac{r}{100~\rm{AU}})^{-v}$}\\
 Velocity at 100 AU    & $V_{100}$ (km~s$^{-1}$)~= & $3.35$& $\pm$0.25 \\
 Velocity exponent     & $v$~=        & $0.52$& $\pm$0.04 \\
 Stellar mass & $M_*$ ($\msun$)~= & 1.32 & $\pm$$^{0.20}_{0.12}$ \\
 \hline \hline
 %\multicolumn{4}{|c|}{ } \\
 \multicolumn{4}{|c|}{Surface density law:~~ $\Sigma(r) = \Sigma_{100} (\frac{r}{100~\rm{AU}})^{- p}$} \\
Surface Density$^{(d)}$ & & & \\
 ~~~~ at 100 AU      & $\Sigma_{100}$~ (cm$^{-2}$)~ = & $1.3\times 10^{22}$ & $0.2\times 10^{22}$ \\
 & $\Sigma_{100}$~(g~cm$^{-2}$)~=&0.06 & 0.01 \\
 ~~~~ exponent       & $p$~$\simeq$  &1.7 & $\simeq$$0.2$ \\
 \hline
%\multicolumn{4}{|c|}{ } \\
 \multicolumn{4}{|c|}{Scale height law:~~ $H(r) = H_{100} (\frac{r}{100~\rm{AU}})^{- h}$} \\
 Scale height & & & \\
 ~~~~ at 100 AU      & $H_{100}$~(AU)~ = & 17 & -\\
 ~~~~ exponent       & $h~\simeq$  &1.35 & - \\
 \hline \hline
%\multicolumn{4}{|c|}{ } \\
 \multicolumn{4}{|c|}{Dust:~~$\kappa_\nu = \kappa_o\times(\frac{\nu}
 {10^{12}~{\rm Hz}})^{\beta}$} \\
 Absorption law & $\kappa_o$~=& $0.1$ &  \\
 Dust exponent          & $\beta$~= & $0.70 $&$\pm$$0.05$ \\
 Dust disk size & $R_{\rm d}$ (AU)~~$>$ & 100 &  \\
 ~~~~~~~ total mass & $M_{\rm d}$ ($\msun$)$~\sim$ & $1.2\times 10^{-3}$ &  \\ 
 \hline
\end{tabular}}
\smallskip
The errors are the 1$\sigma$ formal errors from the $\chi^2$ fit.\\
$^{(a)}$  $X_{\rm TMC1}$, the \dco~abundance in TMC~1 is taken from Cernicharo \&
Gu\'elin \cite{cerni87}. $^{(b,c,d)}$ The temperature is given for $q=0.3$. The error on the density
and temperature do not take into account the coupling with the temperature exponent $q$. \\
The CO abundance in the disk $X(^{12}\rm{CO})$ or the depletion $f(^{12}{\rm CO}) =
X(^{12}{\rm CO)}/ X^{12}_{\rm TMC1} $ is obtained by reference to the total disk mass
measured from the continuum data (dust).
\end{table}