\begin{table}%t7
\caption{\label{tab7}Properties of M~81 and the Galaxy.}
%\centerline
{\small
\begin{tabular}{lrr}
\hline\hline
&M~81						  & MW \\
\hline
Morphological type 		&Sa &Sbc\\
Total mass [$M_{\odot}$]				& $2.3\times10^{11}$(a) & $1.8{-}3.7\times10^{11}$ (b) \\
Gas mass  [$M_{\odot}$]					&$2.9\times10^9$(c)  	& $4\times10^9$ (d)\\
Luminosity  [$L_{\odot}$]	& $1.9\times10^{10}$ (a)& $\dots$\\
Total SFR	[$M_{\odot}$ yr$^{-1}$]				&0.4--0.8 (e)				&0.35 (f)\\
Max $V_{\rm rot}$	[km s$^{-1}$]			&260 (g)				& 200 (h)	 \\
%Slope O/H gradient (t=0)	&-0.08~dex~kpc$^{-1}$$^{i}$				&-0.035~dex~kpc$^{-1}$$^{l}$\\ 
\hline
\end{tabular}}
\tablefoot{(a) Appleton et~al. (\cite{Appleton1981});
(b) Hodge \& Miller (\cite{Hodge1992});
(c) Karachentsev \& Kashibadze (\cite{Karachentsev2006});
(d) van der Kruit (\cite{Kruit1990});
(e) Gordon et~al. (\cite{Gordon2004});
(f) Walterbos \& Braun (\cite{Walterbos1994});
(g) Rohlfs  \& Krertschmann (\cite{Rohlfs1980});
(h) MD05.}
%i) GS87, present work \\
%i) SH10, Deharveng et~al. (\cite{Deharveng2000}) 
%\label{tab_m81_mw}
\end{table}