\begin{table}%t1
\caption{\label{obhvezpar}Stellar parameters of studied O stars.}
%\centering
\small
\begin{tabular}{rrcccccc}
\hline\hline \noalign{\smallskip}
\multicolumn{1}{c}{Star} & \multicolumn{1}{c}{HD} & Sp. & ${R_{*}}$ & $M$ &
$\Teff$ & $L$ & $\dot M$\\
& \multicolumn{1}{c}{}& type & $[{R}_{\odot}]$ &$[{M}_{\odot}]$
&  $[10^3~{\rm K}] $ & $[10^5~{L}_\odot]$ & $[\msr]$ \\
\hline
\noalign{\smallskip}
$\xi$ Per      & $24912$&O7.5IIIe& $14.0$ & $36$ & $35.0$ & $2.64$ & $4.6\times10^{-7}$\\
$\alpha$ Cam   & $30614$&O9.5Iae & $27.6$ & $43$ & $30.9$ & $6.23$ & $1.5\times10^{-6}$\\
$\lambda$ Ori A& $36861$&O8 III  & $12.3$ & $30$ & $36.0$ & $2.28$ & $5.1\times10^{-7}$\\
$\iota$ Ori A  & $37043$&O9III   & $21.6$ & $41$ & $31.4$ & $4.07$ & $6.3\times10^{-7}$\\
$\zeta$ Ori A  & $37742$&O9Iab   & $24.0$ & $34$ & $31.5$ & $5.09$ & $1.5\times10^{-6}$\\
15 Mon         & $47839$&O7Ve    &  $9.9$ & $32$ & $37.5$ & $1.74$ & $2.8\times10^{-7}$\\
               & $54662$&O7III   & $11.9$ & $38$ & $38.6$ & $2.82$ & $8.9\times10^{-7}$\\
               & $93204$&O5V     & $11.9$ & $41$ & $40.0$ & $3.25$ & $1.4\times10^{-6}$\\
$\zeta$ Oph    &$149757$&O9V     &  $8.9$ & $21$ & $32.0$ & $0.75$ & $4.6\times10^{-8}$\\
63 Oph         &$162978$&O8III   & $16.0$ & $40$ & $37.1$ & $4.35$ & $2.0\times10^{-6}$\\
68 Cyg         &$203064$&O8e     & $15.7$ & $38$ & $34.5$ & $3.13$ & $6.1\times10^{-7}$\\
19 Cep         &$209975$&O9Ib    & $22.9$ & $47$ & $32.0$ & $4.93$ & $8.6\times10^{-7}$\\
$\lambda$  Cep &$210839$&O6Iab   & $19.6$ & $51$ & $38.2$ & $7.34$ & $6.4\times10^{-6}$\\
\hline
\noalign{\smallskip}
AE Aur  &$34078$ &O9.5Ve  & $ 7.5$ & $20$ & $33.0$ & $0.60$ & $1.4\times10^{-8}$\\
$\mu$ Col      &$38666$ &O9.5V   & $ 6.6$ & $19$ & $33.0$ & $0.46$ & $7.8\times10^{-9}$\\
               &$42088$ &O6.5V   & $ 9.6$ & $31$ & $38.0$ & $1.72$ & $3.4\times10^{-7}$\\
               &$46202$ &O9V     & $ 8.4$ & $21$ & $33.0$ & $0.75$ & $2.3\times10^{-8}$\\
\hline
\end{tabular}
\end{table}