\begin{table}%t4
%\centering
\par
\caption{The \OI parameters for each sample source. The objects are
  listed according to their IR-SED classification. The distance to the
  source, the effective temperature, UV luminosity and bolometric
  (= integrated \textit{observed}) luminosity are given. References
  for the first two values can be found in Table 6 of AV04, unless
  otherwise indicated: $^A$ \citet{dezeeuw}; $^B$
  \citet{finkenzeller85}; $^C$ \citet{gray93}; $^D$ \citet{gray};
  $^E$ \citet{houk78}; $^F$ \citet{mora01}; $^G$ \citet{vieira03};
  $^H$ \citet{vandenancker98}. The type of \OI
  6300~\A emission profile observed in each object has been indicated;
  E: pure-emission profile, A: 6300~\A region rich in photospheric
  absorption lines, U: undetected feature (upper limit). n.s.: no spectrum
  available. The typical errors on the {\it FWHM} and centroid position are
  $\pm$8 and $\pm$15~\kms~ respectively.
  The thirth column contains the stellar radial velocity employed in
  this study. This value is estimated from the 
  available spectra, unless otherwise indicated: $^a$ \citet{arce};
  $^b$ \citet{arellanoferro}; $^c$ \citet{barbierbrossat}; $^d$
  \citet{dunkin97a}; $^e$ \citet{pietu}; $^f$ \citet{reipurth}; $^g$
  \citet[][ based on CO lines]{yonekura}. $^\dagger$ Based on Ca {\sc ii}
  lines. $\circlearrowright$ Average of radial velocities of
  stars in the same field (radius$\sim$2\arcmin). 
  The last two columns of the table give the type and {\it EW} of the
  observed \Ha profile; S: single-peaked; D: double-peaked; P: P
  Cygni-like; inv. P: inversed P Cyg-like. When no spectrum was
  available, literature 
  values were used: $^h$ \citet{arellanoferro}; $^i$ \citet{dewinter};
  $^j$ \citet{dunkin97a}; $^k$ \citet{dunkin97b}; $^l$
  \citet{finkenzeller84}; $^m$ \citet{merin04}; $^n$ \citet{perez}.
\label{samplevsOI}}
\scriptsize
%\renewcommand{\arraystretch}{1.1}
\begin{tabular}{cccccc|ccccc|cc|cc}
\hline\hline
 \multicolumn{6}{c|}{} &
 \multicolumn{5}{|c|}{\OI 6300~\A} &
 \multicolumn{2}{|c|}{\OI 6363~\A} & 
 \multicolumn{2}{|c}{\Ha}\\
 \multicolumn{1}{c}{Object} &
 \multicolumn{1}{c}{Distance} &
 \multicolumn{1}{c}{$\log T_\eff$} &
 \multicolumn{1}{c}{$\log L_\uv$} &
 \multicolumn{1}{c}{$\log L_\bol$} &
 \multicolumn{1}{c|}{$v_{\rm rad}$} &
 \multicolumn{1}{|c}{Profile} &
 \multicolumn{1}{c}{{\it EW}} &  
 \multicolumn{1}{c}{$L$} &
 \multicolumn{1}{c}{{\it FWHM}} &
 \multicolumn{1}{c|}{Centroid} &
 \multicolumn{1}{|c}{{\it EW}} &
 \multicolumn{1}{c|}{{\it FWHM}} &
 \multicolumn{1}{|c}{Profile} &
 \multicolumn{1}{c}{{\it EW}} \\ 
 \multicolumn{1}{c}{} &
 \multicolumn{1}{c}{[pc]} &
 \multicolumn{1}{c}{$\log$ [K]} &
 \multicolumn{1}{c}{$\log\ [L_\odot]$} &
 \multicolumn{1}{c}{$\log\ [L_\odot]$} &
 \multicolumn{1}{c|}{[\kms]} &
 \multicolumn{1}{|c}{} &
 \multicolumn{1}{c}{[\r{A}]} &
 \multicolumn{1}{c}{[$L_\odot$]} &
 \multicolumn{1}{c}{[\kms]} &
 \multicolumn{1}{c|}{[\kms]} &
 \multicolumn{1}{|c}{[\r{A}]} &
 \multicolumn{1}{c|}{[\kms]} &
 \multicolumn{1}{|c}{} &
 \multicolumn{1}{c}{[\r{A}]} \\
\hline
\textbf{Group I} & & & & & & & & & & & & & & \\
V376 Cas             &  630     & 4.19    &    1.60  &  2.58   & $-$28$^g$                 & E &   $-$0.7~$\pm$~0.2   & $8.6 \times 10^{-4}$  &   131  & $-$28 &$|${\it EW}$|$ $<$ 0.7  &  &  D  & $-$29.7   \\
AB Aur               &  144     & 3.98    &    1.56  &  1.71   &   9                       & E &  $-$0.16~$\pm$~0.01  & $6.4 \times 10^{-4}$  &    20  &    15 &$-$0.04  &  20	 &  P  & $-$54.0   \\
HD 34282             &  400     & 3.94    &    1.12  &  1.38   &  16$^e$                   & U & $|${\it EW}$|$ $<$ 0.07  & $<$$ 1.3 \times 10^{-4}$&        &       &   n.s.   &  n.s.	 &  D  & $-$4.7$^m$ \\
HD 34700             &  336     & 3.77    &    0.91  &  1.42   & $-$21$^b$                 & A &     0.25~$\pm$~0.05  &                       &        &       &   n.s.   &  n.s.	 &  S  &  $-$0.6$^h$ \\
HD 36112             &  204$^H$ & 3.91$^D$&    1.16  &  1.47   &  12                       & A &     0.03~$\pm$~0.01  &                       &        &       &$|${\it EW}$|$ $<$ 0.02 &  &  P  & $-$19.7   \\
HD 245185            &  336$^A$ & 3.95$^D$&    0.93  &  1.29   &  24                       & E &  $-$0.20~$\pm$~0.08  & $2.2 \times 10^{-4}$  &    26  &     8 &$|${\it EW}$|$ $<$ 0.1 &   &  D  & $-$29.5   \\
HD 97048             &  180     & 4.00    &    1.54  &  1.42   &  21                       & E &  $-$0.16~$\pm$~0.01  & $5.3 \times 10^{-4}$  &    24  &     2 &$-$0.05  &  21	 &  D  & $-$36.0   \\
HD 100453            &  112     & 3.87    &    0.66  &  1.09   &  17                       & A &     0.10~$\pm$~0.01  &                       &        &       &$|${\it EW}$|$ $<$ 0.02 &  &  D  &   1.5   \\
HD 100546            &  103     & 4.02    &    1.42  &  1.62   &  18                       & E &  $-$0.19~$\pm$~0.01  & $4.2 \times 10^{-4}$  &    25  &     3 &$-$0.06  &  21	 &  S  & $-$36.8   \\
HD 135344            &  140     & 3.82    &    0.60  &  1.01   &  $-$1                     & A &     0.07~$\pm$~0.01  &                       &        &       &$|${\it EW}$|$ $<$ 0.02 &  &  S  & $-$17.4   \\
HD 139614            &  140     & 3.89    &    0.71  &  1.03   &   5                       & A &     0.04~$\pm$~0.01  &                       &        &       &$|${\it EW}$|$ $<$ 0.02 &  &  S  &  $-$9.8   \\
HD 142527            &  145     & 3.80    &    0.83  &  1.34   &  $\circlearrowright{-9}$  & A &     0.26~$\pm$~0.02  &                       &        &       &   n.s.   &  n.s.	 &  S  & $-$17.9$^n$ \\
CD$-$42$^\circ$11721 &  400     & 4.47    &    3.93  &  3.03   & $-$84$^f$                 & E &  $-$1.77~$\pm$~0.03  & $9.8 \times 10^{-2}$  &    42  &    65 &   n.s.   &  n.s.	 &  S  &$-$199.5$^i$ \\
HD 169142            &  145     & 3.91    &    0.98  &  1.13   &  $-$3$^d$                 & E &  $-$0.05~$\pm$~0.02  & $7.6 \times 10^{-5}$  &    22  &     3 &   n.s.   &  n.s.	 &  S  & $-$14.0$^k$ \\
T Cra                &  130     & 3.86    &   --0.44  &  0.88   &   0$^f$                   & E &  $-$0.21~$\pm$~0.04  & $1.6 \times 10^{-5}$  &    25  &     0 &   n.s.   &  n.s.	 &  D  &  $-$10.7   \\
HD 179218            &  240     & 4.02    &    1.91  &  1.88   &  $-$9                     & E &  $-$0.05~$\pm$~0.01  & $3.4 \times 10^{-4}$  &    43  &    19 &$-$0.03  &  29	 &  S  &  $-$18.2   \\
BD$+$40$^\circ$4124  &  980     & 4.34    &    3.77  &  2.50   &  14                       & E &  $-$0.86~$\pm$~0.01  & $6.1 \times 10^{-2}$  &    46  & $-$38 &$-$0.26   &  41	 &  D  & $-$119.9   \\
HD 200775            &  440     & 4.29    &    3.80  &  2.84   &   8                       & E &  $-$0.09~$\pm$~0.01  & $9.3 \times 10^{-3}$  &    95  & $-$15 &$-$0.04  &  107	 &  D  & $-$74.6   \\
MWC 1080             &  2200    & 4.48    &    5.25  &  3.76   &  $-$4                     & E &  $-$0.17~$\pm$~0.02  & $1.9 \times 10^{-1}$  &    61  & $-$70 &$-$0.03  &  42	 &  P  & $-$122.8   \\
\hline		       	     		   	      					    						       	       
\textbf{Group II} & & & & & & & & & & & & & & \\
VX Cas               &  630     & 3.97    &    1.37  &  1.45   &   7                       & E &  $-$0.13~$\pm$~0.02  & $3.6 \times 10^{-4}$  &    49  & $-$25 &$-$0.07  &  59	 &  D  &  $-$12.9   \\
HD 31648             &  131     & 3.94    &    0.99  &  1.22   &  11                       & U & $|${\it EW}$|$ $<$ 0.02  & $<$$ 2.7 \times 10^{-5}$&       &       &$|${\it EW}$|$ $<$ 0.02 & &  P  & $-$18.3   \\
HD 35929             &  510$^A$ & 3.86$^D$&    1.81  &  1.95   &  15$^\dagger$             & A &     0.15~$\pm$~0.03  &                       &        &       &   n.s.   &  n.s.	 &  S  & $-$4.8   \\
HD 244604            &  336$^A$ & 3.98$^D$&    1.36  &  1.35   &  21                       & U & $|${\it EW}$|$ $<$ 0.04  & $< $$1.0 \times 10^{-4}$&       &       &$|${\it EW}$|$ $<$ 0.03 & &  D  &  $-$15.0   \\
V586 Ori             &  510$^A$ & 3.97$^C$&    1.50  &  1.61   &  26$^f$                   & E &  $-$0.06~$\pm$~0.02  & $2.3 \times 10^{-4}$  &    61  &  $-$4 &   n.s.   &  n.s.	 &  D  &  $-$17.1   \\
BF Ori               &  510     & 3.95    &    1.39  &  1.38   &  26$^f$                   & U & $|${\it EW}$|$ $<$ 0.14  & $< $$4.4 \times 10^{-4}$&       &       &   n.s.   &  n.s.	 &  D  &  $-$9.3   \\
HD 95881             &  118     & 3.95    &    0.70  &  0.99   &  36$^\dagger$             & E &  $-$0.12~$\pm$~0.02  & $7.6 \times 10^{-5}$  &    76  & $-$10 &   n.s.   &  n.s.	 &  D  & $-$21.1   \\
HD 98922            &$>$540$^H$ & 4.02$^E$&    2.86  &  2.95   & $-$15$^\dagger$           & E &  $-$0.13~$\pm$~0.01  & $7.9 \times 10^{-3}$  &    34  &    25 &   n.s.   &  n.s.	 &  P  & $-$27.9   \\
HD 101412            &  160$^A$ & 4.02$^G$&    1.53  &  1.40   &  $\circlearrowright{-3}$  & E &  $-$0.12~$\pm$~0.03  & $3.4 \times 10^{-4}$  &    63  &    26 &   n.s.   &  n.s.	 &  D  & $-$20.4   \\
HD 104237            &  116     & 3.92    &    1.36  &  1.53   &  13                       & A &     0.06~$\pm$~0.01  &                       &        &       &$|${\it EW}$|$ $<$ 0.02&   &  D  & $-$24.5   \\
HD 141569            &  99      & 3.98    &    1.16  &  1.10   &  $-$2                     & E &  $-$0.18~$\pm$~0.01  & $2.9 \times 10^{-4}$  &   154  &    10 &$-$0.09  &  158	 &  D  & $-$6.7   \\
HD 142666            &  145     & 3.88    &    0.91  &  1.03   &  3$^d$                    & A &     0.07~$\pm$~0.02  &                       &        &       &   n.s.   &  n.s.	 &  D  &  $-$3.2$^j$       \\
HD 144432            &  145     & 3.87    &    0.77  &  1.13   &  2$^d$                    & U & $|${\it EW}$|$ $<$ 0.04  & $<$$ 4.7 \times 10^{-5}$&       &       &   n.s.   &  n.s.	 &  P  &  $-$9.0$^j$       \\
HR 5999              &  210     & 3.90    &    1.74  &  1.98   &  16$^\dagger$             & U & $|${\it EW}$|$ $<$ 0.04  & $<$$ 3.8 \times 10^{-4}$&       &       &   n.s.   &  n.s.	 &  D  &  $-$11.0   \\
HD 150193            &  150     & 3.95    &    1.23  &  1.19   &  $-$6$^f$                 & U & $|${\it EW}$|$ $<$ 0.04  & $<$$ 8.8 \times 10^{-5}$&       &       &   n.s.   &  n.s.	 &  P  &  $-$5.0$^l$       \\
AK Sco               &  150     & 3.81    &    0.63  &  0.89   &  0$^f$                    & A &     0.18~$\pm$~0.03  &                       &        &       &   n.s.   &  n.s.	 &  D  &  $-$9.4   \\
HD 163296            &  122     & 3.94    &    1.22  &  1.52   &  $-$4$^c$                 & U & $|${\it EW}$|$ $<$ 0.04  & $< $$9.2 \times 10^{-5}$&       &       &   n.s.   &  n.s.	 &  D  & $-$14.5$^l$        \\
VV Ser               &  330     & 3.95    &    1.13  &  1.37   &  $-$4                     & E &  $-$0.73~$\pm$~0.04  & $1.2 \times 10^{-3}$  &    50  & $-$25 &$-$0.21   &  47	 &  D  & $-$81.3   \\
R CrA                &  130     & 3.86    &   --0.45  &  3.46   &  0$^f$                    & E &  $-$0.5~$\pm$~0.1    & $3.8 \times 10^{-5}$  &    32  & $-$20 &   n.s.   &  n.s.	 &  D  & $-$44.3   \\
WW Vul               &  440     & 3.98    &    1.32  &  1.30   &  2                        & E &  $-$0.07~$\pm$~0.02  & $1.6 \times 10^{-4}$  &    60  & $-$42 &$|${\it EW}$|$ $<$ 0.05 &  &  D  & $-$24.0   \\
HD 190073           &$>$290$^H$ & 3.95$^F$&    1.72  &  1.92   &  3                        & E &  $-$0.07~$\pm$~0.02  & $4.7 \times 10^{-4}$  &    25  & $-$12 &$-$0.01  &  13	 &  P  & $-$27.1   \\
LkH$\alpha$ 224      &  980     & 3.89    &    1.86  &  2.32   &  6                        & U & $|${\it EW}$|$ $<$ 0.15  & $<$$ 1.9 \times 10^{-3}$&       &       &$|${\it EW}$|$ $<$ 0.2  & &  P  & $-$17.6   \\
BD$+$46$^\circ$3471  &  1200    & 3.99    &    2.50  &  2.43   &  8                        & E &  $-$0.04~$\pm$~0.01  & $1.3 \times 10^{-3}$  &    48  & $-$36 &$|${\it EW}$|$ $<$ 0.04 &     &  P  & $-$21.7   \\
SV Cep               &  440     & 3.97    &    1.02  &  1.39   &  4                        & E &  $-$0.12~$\pm$~0.01  & $1.5 \times 10^{-4}$  &    63  & $-$34 &$-$0.05  &  46	 &inv. P&  $-$10.1   \\
IL Cep               &  690$^H$ & 4.27$^B$&    3.76  &  2.18   &  1                        & U & $|${\it EW}$|$ $<$ 0.02  & $<$$ 2.1 \times 10^{-3}$&       &       &$|${\it EW}$|$ $<$ 0.05 & &  D  & $-$34.5   \\
\hline		       	     		   	      					   						       	                    
\textbf{Group III} & & & & & & & & & & & & & & \\
Z CMa                &  1050    & 4.48    &    5.13  &  3.71   &  36                       & E &  $-$4.3~$\pm$~0.2    & $3.8$                 &   421  &$-$249 &$-$1.08   &  695	 &  P  & $-$45.2   \\
MWC 297              &  250     & 4.37    &    4.01  &  2.69   &  $-$16                    & E &  $-$6.91~$\pm$~0.02  & $7.1 \times 10^{-1}$  &    22  &     5 &$-$1.56   &  21	 &  S  &$-$355.3   \\
LkH$\alpha$ 225      &  980     & 3.86    &    2.37  &  3.26   &  6                        & E &  $-$0.3~$\pm$~0.1    & $1.4 \times 10^{-2}$  &    65  & $-$51 &$|${\it EW}$|$ $<$ 0.2  &  &  U  &         \\
PV Cep               &  440     & 3.91    &    0.76  &  1.92   &  $-$18$^a$                & E &  $-$2.9~$\pm$~0.1    & $2.7 \times 10^{-3}$  &   321  &$-$164 &$|${\it EW}$|$ $<$ 0.9  &  &  P  & $-$49.9   \\
V645 Cyg             &  3500    & 4.58    &    4.42  &  4.61   &  $-$14                    & E &  $-$5.4~$\pm$~0.6    & $6.5 \times 10^{-1}$  &   423  &$-$257 &$-$1.44   &  390     &  D  & $-$121.7   \\
\hline
\end{tabular}
\end{table}