\begin{table}%t2
\caption{\label{table:2}List of results for $\log~{g}$ and $\textit{T}_{\rm eff}$ of the star HD140283 derived using different techniques.}
%%\centerline

 {\small \begin{tabular} {l l l}
 \hline\hline
 Study & Temperature & ${T}_{\rm eff}/\log~{g}$ \\
\hline
This work & Simultaneous fit & $5573/3.1^a$ \\
\cite{Asplundetal06} & Balmer line wing & $5753/3.7^b$  \\
\cite{Ryanetal96} & Photometry & $5750/3.4$ \\
\cite{Alonsoetal96} & IRFM & $5691/4.0^c$\\
\hline
\end{tabular}}
\medskip
$^a$ The uncertainties are 75~K and 0.15~dex respectively; $^b$ the uncertainties are 30~K and 0.04~dex respectively; $^c$ the uncertainties are 69~K and 0.5~dex respectively.
 \end{table}