\begin{table}%T3
\caption{\label{parametersliterature}Stellar parameters of Deneb from different sources.}
\small 
%\centering
\par
\begin{tabular}{l c c c}
\hline\hline\noalign{\smallskip}
Source						& $T_{\rm eff}$ in K	& $\log g$	& $\xi$	in km~s$^{-1}$	 \\
\hline
\emph{This work}				& 8525~$\pm$~75	& 1.10~$\pm$~0.05	& 8~$\pm$~1 \\ 
Blackwell et~al.~(\cite{blackwell1980})		& 7635			& --		& -- \\ 
Bonneau et~al.~					& 8250			& --		& -- \\
\hspace{0.5cm}	(\cite{bonneau1981})	       	& 8150~$\pm$~600	& --		& -- \\ 
Aufdenberg et~al.					& 8600~$\pm$~500	& 1.3		& 15 \\
\hspace{0.5cm}	 (\cite{aufdenberg2002})	& 8420~$\pm$~100	& 1.1$-$1.6	& -- \\ 
Albayrak (\cite{albayrak2000})			& 9000			& 1.45		& 3.6$-$11.9 \\ 
Takeda et~al.~(\cite{takeda1996})			& 9000			& 1.5		& 10 \\ 
Samedov (\cite{samedov1993})			& 9100			& 1.2		& -- \\ 
Groth (\cite{groth1961})			& 9170~$\pm$~500	& 1.13~$\pm$~0.2	& -- \\ 
Zverko (\cite{zverko1971})		& 9510			& 1		& 11 / 17 \\ 
Aydin (\cite{aydin1972})			& 9900			& 1.2~$\pm$~0.2	& 5$-$12 \\ 
Takeda (\cite{takeda1994})		& 10~000		& 1.5		& 10 \\ 
Burnashev (\cite{burnashev1980})		& 10~080		& 1.54		& -- \\
\hline
\end{tabular}
\end{table}