\begin{table}%t1
    \caption{Basic properties of the sample galaxies.}\label{tab:prop}
    \small%\centerline
{
        \begin{tabular}{l c c c c c c c}
        \hline\hline
        & Type & RA(1950) & Dec(1950) & Dist.& Velocity &
        Optical &  Metallicity:~ \\
        &&&&&LSR&size$^{a}$&12+log$\frac{{\rm O}}{{\rm H}}$\\
        & & & & (Mpc) & (km~s$^{-1}$) & & \\
        \hline\noalign{\smallskip}
        IC~10 & dIrr IV/BCD$^{a}$ & 00:17:44.0 & 59:00:18.0 & 1$^{1}$
        & --344 & 6.8$'\times$~5.8$'$ & 8.31~$\pm$~0.20$^{14}$ \\
        %\hline
        NGC~253$^{b}$ & SAB(s)c;H$_{{\rm II}}$, Sbrst & 00:45:05.7 &
        --25:33:38.0 & 2.5$^{18}$ & 240 & 27.5$' \times$~6.8$'$ &
        8.99~$\pm$~ 0.31$^{16}$\\
        %\hline
        IC~342 & SAB(rs)cd HII$^{a}$ & 03:41:57.2 & 67:56:27.0 &
        1.8$^{2}$ & 35 & 21.4$'\times$~20.9'& $\approx$9.30$^{15}$\\
        %\hline
        Henize~2$-$10$^{b}$ & I0 pec, Sbrst & 08:34:07.2 & --14:26:06.0 &
        6$^{17}$ & 850 & 30$'' \times$~ 40 '$'$ & $\approx$8.93$^{16}$ \\
        %\hline
        M 82 & I0;Sbrst HII$^{a}$ & 09:51:43.8 & 69:55:00.9 &
        3.2$^{3}$ & 200 & 11.2$'\times$~4.3$'$ & 9.00~$\pm$~0.12$^{14}$ \\
        %\hline
        NGC~3079 & SB(s)c;LINER Sy2$^{a}$ & 09:58:35.0 & 55:55:15.4
        &15.6$^{4}$ & 1331 & 7.9$'\times$~1.4$'$ & -- \\
        %\hline
        IRAS 10565+2448& LINER HII$^{a}$ & 10:56:36.2 & 24:48:40.0 & 172$^{5}$
        & 12~923 &0.4$'\times$~0.3$'$ & -- \\
        %\hline
        NGC~4038 & SB(s)m pec$^{a}$ & 11:59:19.0 & --18:35:23.0 &
        13.8$^{6}$ & 1634 & 5.9$'\times$~3.2$'$ & -- \\
        %\hline
        Overlap & SA(s)m pec$^{a}$ & 11:59:21.1 & --18:36:17.0 &
        13.8$^{6}$ & 1510 & 3.1$'\times$~1.6$'$ & -- \\
        %\hline
        NGC~4736 & (R)SA(r)ab;Sy2 LINER$^{a}$ & 12:48:32.4 &
        41:23:28.0 & 4.3$^{7}$ & 314 & 11.2$'\times$~9.1'&
        9.01~$\pm$~0.17$^{16}$ \\
        %\hline
        Mrk 231 & SA(rs)c? pec Sy1$^{a}$ & 12:54:05.0 & 57:08:39.0 &
        173.9$^{8}$ & 12~650& 1.3$'\times$~1.0$'$ & --\\
        %\hline
        Centaurus A & S0 pec Sy2$^{a}$ & 13:22:31.6 & --42:45:32.0 &
        3.5$^{9}$ & 550 & 25.7$'\times$~20.0'& -- \\
        %\hline
        M 51 & SA(s)bc pec; HII Sy2.5$^{a}$& 13:27:46.1 & 47:27:14.0
        & 9.6$^{10}$ & 470 & 11.2$'\times$~6.9'& 9.23~$\pm$~0.12$^{16}$ \\
        %\hline
        M~83 & SAB(s)c; HII Sbrst$^{a}$ & 13:34:11.3 & --29:36:42.6 &
        3.5$^{11}$ & 516 & 12.9$'\times$~11.5$'$ & 9.16~$\pm$~0.12$^{16}$  \\
        %\hline
        Arp 220 & S?;LINER; HII Sy2$^{a}$ & 15:32:46.7 & 23:40:08.0 &
        77$^{10}$ & 5450 & 1.5$'\times$~1.2$'$ & -- \\
        %\hline
        NGC~6090 & Sd pec HII$^{a}$ & 16:10:23.9 & 52:35:11.0 &
        118$^{12}$  & 8831 & 2.8$'\times$~1.5$'$ & -- \\
        %\hline
        NGC~6946 & SAB(rs)cd HII$^{a}$ & 20:33:48.8 & 59:58:50.0 &
        5.5$^{13}$  & 50 & 11.5$'\times$~9.8$'$ & 9.06~$\pm$~0.17$^{16}$ \\
        \hline
        \end{tabular}}
\smallskip
    References:~1:~Adopted value (see text); 2:~\citet{McCa89, Kara93};
    3:~\citet{Dumk01} consistent with the value of \citet{Tamm68}; 4:
    \citet{Sofu99}; 5:~\citet{Glen01}; 6:~\citet{Savi04}; 7:
    \citet{Tull87}; 8:~\citet{Brya99}; 9:~\citet{DeVa79}; 10:
    \citet{DeVa91}; 11:~\citet{Thim03}; 12:~Redshift from
    \citet{Geri99} with $H_{0} = 75$~km~s$^{-1}$~Mpc$^{-1}$; 13:
    \citet{Tull88}; 14:~\citet{Arim96}; 15:~\citet{Vila92, Garn98b};
    16:~\citet{Zari94}; 17:~\citet{Joha87}; 18 :~As in \citet{Maue96}
    (see \citet{Baye04}); $^{a}$:~Data from the NED database; $^{b}$:
    See \citet{Baye04} to obtain more information on the properties of
    NGC~253 and Henize~2$-$10.
   \end{table}