\documentclass{aa}

\begin{document}
\appendix

\addtocounter{section}{2}
\begin{table*} 
\caption{{\it HRI} X-ray sources counterpart identifications in the $\rho$ Oph cloud cores A \& F.}
\scriptsize
\begin{tabular}{crrclcrrrcrrr}
\hline
\hline
\vspace{-0.1cm}\\
\multicolumn{3}{c}{ROXR}  &  & &  & &  & &  \multicolumn{4}{c}{$\log $L$_{\mathrm X}$~(d=140\,pc)}\\
\multicolumn{3}{c}{\hrulefill} & \multicolumn{1}{c}{ASCA} & \multicolumn{1}{c}{NAME} & ISO & \multicolumn{1}{c}{IR} &\multicolumn{1}{c}{A$_{\mathrm{V}}$} & \multicolumn{1}{c}{L$_{\star}$} & \multicolumn{4}{c}{\hrulefill} \\
 & \multicolumn{1}{c}{1} & \multicolumn{1}{c}{2} & &  & & \multicolumn{1}{c}{Class} & \multicolumn{1}{c}{[mag]}
 & \multicolumn{1}{c}{[L$_{\odot}$]} & \multicolumn{1}{c}{\#1} & \multicolumn{1}{c}{\#2} & \multicolumn{1}{c}{\#3} & \multicolumn{1}{c}{\#1+2+3}\\
(1) & (2) & (3) & \multicolumn{1}{c}{(4)} & \multicolumn{1}{c}{(5)} & \multicolumn{1}{c}{(6)} & \multicolumn{1}{c}{(7)} & \multicolumn{1}{c}{(8)} & \multicolumn{1}{c}{(9)} & \multicolumn{1}{c}{(10)} & \multicolumn{1}{c}{(11)} & \multicolumn{1}{c}{(12)} & \multicolumn{1}{c}{(13)} \\

\hline
\vspace{-0.25cm}\\
A1~ &  2~    			&   ---~  					& ---~		& \object{SR2}=\object{SAO184375}		&  --- 		&   III$^{\star}$\hspace{-0.055cm} 	&  0$^{\star}$\hspace{0.18cm} 	&	1.2$^{\star}$\hspace{-0.14cm}				& 30.4    \\
A2~ &  3~    			&   ---~  					& \dotfill~		&  \object{SR22}         	&  --- 		&   II$^{\star}$\hspace{-0.055cm} 	&  1.5$^{\star}$\hspace{-0.04cm}	&	0.4$^{\star}$\hspace{-0.14cm} & 29.4    \\
A3~ & \dotfill~  		&   ---~  					& \dotfill~ 	&  \object{B162538-242238} 		&   {\it red}  	&   nII~	 			&  10.9~				& 	0.2    			& 30.3    \\
A4~ &  5$^{\star}$\hspace{-0.04cm} 	&   ---~    					& \dotfill~	&  \object{IRS3}         	&   {\it red}	&   nII~	 			&  4.6~					&	0.3  				& 29.8    \\
A5~ &  8~    			&   ---~  					& 1		&  \object{ROXs4}=\object{IRS10}         		&  {\it blue}	&   nIII~	 			&  5.4~					&	1.7    			& 31.4    \\
A6~ &  9~    			&   ---~  					& \dotfill~	&  \object{SR4}          		&   {\it red}  	&   II~   	 	&  1.9~ 				&	1.5    			& 29.9   \\
A7~ & 10~    			&   ---~  					& 2		&  \object{GSS20}         		&  {\it blue}	&   III~    	 		&  4.7~					&	1.1  				& 30.5    \\
A8~ & 11~		 	&   ---~ 					& \dotfill~	&  \object{Chini8}$^{\star}$=\object{SKS3}       	&  \dotfill~	&  nIII$^{\star}$\hspace{-0.055cm}					&  0.5~				&  0.2				&  29.1 \\
A9~ & 12$^{\star}$\hspace{-0.04cm} 	&   ---~  				& \dotfill~	&  \object{B162601-242945}		&  {\it blue}  	&  nIII~	 			&  8.1~					&	0.5    			& 30.2   \\
A10 & \dotfill~  		&   ---~  					& \dotfill~	&  		              	&  \dotfill  	& 	 		&  				&			&  ?\\
\hline
\vspace{-0.25cm}\\
A11 & 13~    			&   ---~  					& 3		&  \object{DoAr21}=\object{ROXs8}              	&  {\it blue}  	&   III~	    	 &  6.0~					&	14.7   			& 31.6    \\
A12 & 14~		 	&   ---~  					& \dotfill~	&  \object{VSSG19}              		&  {\it blue}	&   nIII~	 			&  3.9~  				&	0.5    			& 29.9   \\
A13 & 15$^{\star}$\hspace{-0.04cm}	&   ---~  				& \dotfill~	&  \object{ROXC1}=\object{B162607-242742}	&  {\it blue}  	&  nIII~	 			&  20.6~				&	0.7    			& 31.3  \\
A14 & 18~    			&   ---~  					& \dotfill~	&  \object{GSS29}         		&   {\it red}	&   II~   	 			&  9.4~					&	1.4    			& 31.0    \\
A15 & 17~    			&   ---~  					& \dotfill~	&  \object{DoAr24}=\object{ROXs10A}    		&   {\it red} 	&   II~    	 			&  1.8~					&	0.7    			& 30.0    \\
A16 & ---~ 			& .\hspace{0.05cm}.$^{\star}$\hspace{-0.03cm} 	&  ---~		&  \object{WSB28}   		&  {\it blue} 	&  nIII~ 				&  4.3~					&	0.4				& 30.1\\
A17 & 22$^{\star}$\hspace{-0.04cm}   &   ---~  				& \dotfill~	&  \object{GSS30-IRS2} 			&  {\it blue}	&   III~    	 		& 19.5~					&	0.9    			& 30.9    \\
A18 & 24~    			&   ---~  					& 4		&  \object{GSS31}     			&   {\it red}  	&   II~    	 			&  6.1~					&	5.9    		& 30.4    \\
A19 & 25~    			&   ---~  					& C3		&  \object{S2}    			&   {\it red}	&   II~    	 			& 11.8~					&	3.7    			& 30.4    \\
A20 & 26~    			&   ---~  					& \dotfill~	&  \object{El24}      			&   {\it red}	&   II~    	 			& 10.0~					&	4.5    			& 30.5    \\
\hline
\vspace{-0.25cm}\\
A21 & 28~    			&   ---~  					& 5		&  \object{S1}=\object{ROXs14}        	&  {\it blue}  	&   	III$^{\star}$\hspace{-0.055cm}	    	&  12$^{\star}$\hspace{-0.04cm}					&   1100$^{\star}$\hspace{-0.04cm}	   		&  30.8   \\
A22 & \dotfill~  		&   ---~  					& \dotfill~	&  \object{B162636-241554} 		&   {\it red}  	&   nII~	 			&  7.6~					&	0.3     			& 30.2    \\
A23 & 29~    			&   ---~  					& C4		&  \object{GSS37}   			&   {\it red}	&   II~   	 			&  8.5~					&	1.6    			& 30.3    \\
A24 & ---~   			&   17~   					& \dotfill~	&  \object{VSS27}=\object{ROXs16} 		&   {\it red}	&   II~   	 			&  5.6~					&	1.9        			& 30.7    \\
A25 & 32~   			&   ---~  					& \dotfill~	&  \object{VSSG3}          		&  {\it blue}	&   III~    	 		& 15.7~					&	2.8    			& 31.2    \\
A26 & 38~   			&   ---~  					& \dotfill~	&  \object{SR21}$^{\star}$ 		&   {\it red} 	&   II~    	 			&  3.5~					&	4.0    			& 30.0    \\
%------------------------------------------------------------------------
\hline
\hline
\vspace{-0.25cm}\\
F1~ & 23~			&   ---~  					& \dotfill~	&  \object{DoAr25}$^{\star}$   		&  {\it red} 		&  II~		 			& 0.7~					&  0.8   	&  29.7  	& $\leq$29.4	& 29.8 		&	 29.6\hspace{0.45cm} \\
F2~ & 31~			&   ---~  					& \dotfill~	&  \object{GY112}    			& {\it blue} 		&nIII~		 			& 3.6~					&  0.4   	&  $\leq$30.0~~ & 30.2	     	& 30.4 		& 30.2\hspace{0.45cm} \\
F3~ & \dotfill~  		&   ---~  					& \dotfill~	&  \object{GY122}       			& {\it blue} 	& nIII~		 			& 2.7~					&  0.08   	&  $\leq$29.7~~ & $\leq$29.6 	& 29.8 		& 29.6\hspace{0.45cm} \\
F4~ & \dotfill~			&   ---~  					& \dotfill~	&  	   			&  \dotfill 	&  			& 				&  		& $\leq$	&  $\leq$    	& $\leq$	&  ?\hspace{0.45cm} \\
F5~ & \dotfill~  		&   ---~  					& \dotfill~	&  				&  \dotfill 	& 	 			& 				&  	&  ?	&  ?	&  ?	& ?\hspace{0.45cm} \\
F6~ & \dotfill~  		&   ---~  					& \dotfill~	&  	 			&  \dotfill 	& 	 			& 				&  	&  ?	&  ?	&  ?	& ?\hspace{0.45cm} \\
F7~ & 35$^{\star}$\hspace{-0.06cm}			&   ---~  		& \dotfill~	&  \object{SR24S}$^{\star}$    			&  {\it red} 	&  II~  	 			& 5.9~  				&  2.2  	&  30.1   	&  30.6		& 30.2 		& 30.3\hspace{0.45cm} \\
F8~ & \dotfill~  		&   ---~  					& \dotfill~	&  \object{GY193} 			& {\it blue} 	& nIII~		 			& 7.4~					&  0.3   	&  $\leq$30.3~~ & $\leq$30.2	& 30.0 		& 30.0\hspace{0.45cm} \\
F9~ & 36$^{\star}$\hspace{-0.06cm}     &   ---~  				& \dotfill~	&  \object{GY194} 		& {\it blue} 	& nIII~		 			& 9.1~					&  0.4   	&  30.4  	& 30.2		& 30.6 		& 30.5\hspace{0.45cm} \\
F10 & \dotfill~			&   ---~  					& \dotfill~	& 	   			&  \dotfill 	&	 			& 				&   	&  $\leq$	& $\leq$	&   $\leq$   	& ?\hspace{0.45cm} \\
\hline
\vspace{-0.25cm}\\
F11 & \dotfill~  		&   ---~  					& \dotfill~	&  	  			&  \dotfill 	& 	 			& 				&  	&  ?	& ?	&  ?	&  ?\hspace{0.45cm} \\
F12 & \dotfill~  		&   ---~  					& \dotfill~	&  {\it anonymous star}$^{\star}$ 	& ---	 	& II-III?\hspace{0cm}		& 				&  	&  $\leq$	& $\leq$	&  $\leq$    		& ?\hspace{0.45cm} \\
F13 & \dotfill~  		&   ---~  					& \dotfill~	&  	 			&  \dotfill 	& 	 			& 				&  	&  ?	& ?	&  ?	&  ?\hspace{0.45cm} \\
F14 & ---~ 			&   22$^{\star}$\hspace{-.06cm}   		& ---~		&  \object{ROXs20B} 		& --- 		& III~   	 			& 2.7~ 					&  0.3   	& 30.3   	&  30.4		& 30.4 		& 30.4\hspace{0.45cm} \\
F15 & \dotfill~  		&   ---~  					& \dotfill~	&  \object{GY238}			&  {\it red} 	& nII~		 		& 45.7~				&  0.3   	&  $\leq$32.9~~ & $\leq$32.6	& 33.0 		& $\leq$32.5\hspace{0.45cm} \\
F16 & 39~  			&   ---~  					& \dotfill~	&  \object{WL20}    			&  {\it red} 	& II~    	 			& 16.5~  				&  0.9   	&  $\leq$30.9~~ & 31.1		& 30.7 		& 30.9\hspace{0.45cm} \\
F17 & 41~     			&   ---~  					& 9A		&  \object{SR12AB}=\object{ROXs21} 			& {\it blue} 	& III~   	 			& 1.2~   				&  0.8   	&  30.7  	& 30.6		& 30.6 		& 30.6\hspace{0.45cm} \\
F18 & \dotfill~  		&   ---~  					& \dotfill~	&  \object{B162720-243820}		&  \dotfill 	& II-III?\hspace{-0.04cm}		& 				&  	&  ?	& ?	&  ?	& ?\hspace{0.45cm} \\
F19 & \dotfill~  		&   ---~  					& \dotfill~		&  \object{WSB49} 		&  \dotfill$^{\star}$		& II$^{\star}$\hspace{-0.055cm}	& 1.9~					&  0.2   	&  $\leq$29.3~~	& $\leq$29.1	& 29.3 		& $\leq$29.1\hspace{0.45cm} \\
F20 & \dotfill~  		&   ---~  					& \dotfill~	&  				&  \dotfill 	& 	 			& 				&  	&  ?	& ?	&  ?	& ?\hspace{0.45cm} \\
\hline
\vspace{-0.25cm}\\
F21 & 43$^{\star}$\hspace{-0.04cm} 	&   ---~  				& \dotfill~	&  \object{YLW15}=\object{IRS43}   	& {\it red} 	& I~   		 			& 30$^{\star}$\hspace{0.18cm}  		&10$^{\star}$\hspace{0.24cm} &  32.6 	& $\leq$31.1	&  $\leq$31.4 	& 31.9\hspace{0.45cm} \\
F22 & 44~  			&   ---~  					& \dotfill~	&  \object{VSSG25}    			& {\it red} 	& II~    	 			& 9.8~  				&  0.4   	&  $\leq$30.8~~	& 31.7		& 30.4 		& 31.3\hspace{0.45cm} \\
F23 & 46$^{\star}$\hspace{-0.06cm} 	&   ---~  				& \dotfill~	&  \object{B162728-244803}$^{\star}$   	& --- 		& II-III?\hspace{-0.04cm}		& 				&  	&  $\leq$	& $\leq$	&  $\leq$	& ?\hspace{0.45cm} \\
F24 & ---~       		&\dotfill~					& ---~		& \object{U0600-11613195}$^{\star}$ & --- 		& II-III?\hspace{-0.04cm}		& 				&  	&  ?	& ?	&  ?	& ?\hspace{0.45cm} \\
F25 & 48$^{\star}$\hspace{-0.02cm}     &   ---~  				& \dotfill~	&  \object{BBRCG50} 		&  \dotfill 	& II-III?\hspace{-0.04cm}		& 				&  	&  $\leq$	& $\leq$	& $\leq$	& ?\hspace{0.45cm} \\
F26 & \dotfill~  		&   ---~  					& \dotfill~	&   \object{B162730-244726} 		& {\it blue} 	& nIII~ 				& 10.3~					&  0.6   	& 30.6 		& 30.5		&  $\leq$30.2 	& 30.5\hspace{0.45cm} \\
F27 & 49~  			&   ---~  					& \dotfill~	&  \object{GY292}    			& {\it red} 	& II~    	 			& 10.8~					&  1.6   	& $\leq$30.6~~	& 30.7		& 30.8 		& 30.7\hspace{0.45cm} \\
F28 & \dotfill~			&   ---~  					& \dotfill~	&  \object{GY296}$^{\star}$ 		& {\it blue}	& nIII~	 			& 5.1~						&  0.08		&  	$\leq$	& $\leq$		&    $\leq$  		&  29.4\hspace{0.45cm} \\
F29 & 50~ 			&   ---~  					& \dotfill~	&  \object{IRS49}   			& {\it red} 	& II~  		 			& 10.1~ 				&  1.1  	& 31.6		& 30.4		& 30.4 		& 30.9\hspace{0.45cm} \\	
F30 & 51~			&   ---~  					& \dotfill~	&  \object{GY314}   			& {\it red} 	& II~    	 			& 6.4~   				&  0.8   	& 30.4 		& 30.4		& 30.3 		& 30.4\hspace{0.45cm} \\
\hline
\vspace{-0.25cm}\\
F31 & 52~     			&   ---~  					& 11		&  \object{SR9}=\object{ROXs29}    		& {\it red} 	& II~    	 			& 0~~~  				&  1.6   	& 29.8		& 29.2		& 29.9 		& 29.7\hspace{0.45cm} \\
F32 & \dotfill~			&   ---~  					& ---~		&  \object{GY377} 			&  {\it blue} 	& nIII~			& 	16.0~					&  0.4		&  	$\leq$	& $\leq$		&     $\leq$ 		&  30.6\hspace{0.45cm} \\
F33 & 54~     			&   ---~  					& \dotfill~	&  \object{ROXs31}=\object{IRS55}			&  {\it blue}	& III~   				& 6.0~  				&  1.8   	& 30.7		& 30.7		& 30.7 		& 30.7\hspace{0.45cm} \\
F34 & 55~  			&   ---~  					& ---~		&  \object{WSB58}    			& --- 		& II-III?\hspace{-0.04cm}		& 				&  	&  ?	& ?	&  ?	& ?\hspace{0.45cm} \\	
F35 & ---~       		&\dotfill~					& ---~		&  \object{B162800-245340}		& --- 		& II-III?\hspace{-0.04cm}		& 				&  	&  ?	& ?	&  ?	& ?\hspace{0.45cm} \\
F36 & ---~       		&\dotfill~					& ---~		&  \object{B162812-245043}		& --- 		& II-III?\hspace{-0.04cm}		& 				&  	&  ?	& ?	&  ?	& ?\hspace{0.45cm} \\
F37 & ---~       		&   34~   					& ---~		&  \object{HD148352}		& {\it blue} 	& III$^{\star}$\hspace{-0.055cm}						& 0~~~					&  	   	& 29.9		& 30.0		& 29.8 		& 29.9\hspace{0.45cm} \\
\hline
\hline
\end{tabular}
\normalsize
\vspace{0.2cm}\\
{\noindent{\bf Comments to Table~\ref{tab:ident}:}}\\
$\star$ = see notes below.
ROXRA or ROXRF = X-ray source number (this article). 
ROXR1 = Casanova et al.  (1995, ApJ 439, 752) X-ray source number. 
ROXR2 = Casanova (1994, Ph.D. thesis, Paris VI University) X-ray source number. 
ASCA = Kamata et~al. (1997, PASJ 49, 46) X-ray source number. 
Dash = out of observation field. 
Dots = unobserved source. 
{\it red} = {\it ISOCAM} source with IR excess. 
{\it blue} = {\it ISOCAM} source without IR excess. 
nII = new class II. 
nIII = new class III. 
? = X-ray detected source for which intrinsic X-ray luminosity cannot be determined.
$\leq$ = X-ray undetected source. 
II-III? = class II or class III candidate (see Appendix B).
\label{tab:ident}
\end{table*}

\begin{table*}
{\noindent {\bf Notes to Table~\ref{tab:ident}:}}\\
ROXRA1: (7) The IR index ($\alpha_\mathrm{IR}$=dlog($\lambda F_\mathrm{\lambda}$)/dlog$\lambda$) is 
estimated between 2.18--4.69\,$\mu$m from Walter et~al. (1994, AJ 107, 692)
and Jensen et~al. (1997, AJ 114, 301): we find $\alpha_\mathrm{IR}$=-2.5.
(8--9) These values are estimated from Walter $et~al.$ (1994, AJ 107, 692).\\
ROXRA2: (7) Mart{\'\i}n et~al. (1998, MNRAS 300, 733) classify these stars as CTTS.
(8--9) These values are estimated from GWAYL.\\
ROXRA4: (2) ROXR1-5 was identified with IRS3 and IRS5 (Casanova, S. et al.  1995, ApJ 439, 752). \\
ROXRA8: (5) The position of Chini8 (Chini, R., 1981, A\&A 99, 346) is 33$^{\prime\prime}$ away from this optical star, the good position is given in Table 1 of 
Strom et~al. (1995, ApJ 438, 813) by source number 3. (7) The {\it ISOCAM} LW2 and LW3 upper limits exclude an IR excess (see Appendix~D).\\
ROXRA9: (2) ROXR1-12 was identified with an anonymous optical star (Casanova, S. et al.  1995, ApJ 439, 752).\\
ROXRA13: (2) ROXR1-15 was neither optical nor IR counterpart (Casanova, S. et al.  1995, ApJ 439, 752). \\
ROXRA16: (3) ROXR2-16 was $\sim 1\arcmin$ from ROXRA16 (identified with WSB28; Casanova, S. et al.  1995, ApJ 439, 752), ie only two error boxes away, 
but Mart{\'\i}n et~al. (1998, MNRAS 300, 733) identify ROXR2-16 with another star.\\
ROXRA17: (2) ROXR1-22 was identified with GSS30-IRS1, 2, 3 (Casanova, S. et al.  1995, ApJ 439, 752).\\
ROXRA21: (7) S1 is an embedded B-type star (Wilking et~al. 1989, ApJ 340, 823; Andr{\'e} et~al. 1988, ApJ 335, 940).
(8) The visual extinction comes from the data of Lada \& Wilking (1984, ApJ 287, 610), see Andr{\'e} et~al. (1988, ApJ 335, 940). 
(9) This B3--B5 stellar luminosity is taken from Andr{\'e} et~al. (1988, ApJ 335, 940).\\
ROXRA26: (5) In the BKLT survey this well known emission line star appears to be a $6.5\arcsec$ separation binary 
(this can also be suspected from the finding chart): the main component is B162710-241914 ($J$=8.56), 
the second one is B162710-241921 ($J$=11.27).\\
ROXRF1: (5) The IR star B162623-244308 is also in the 90$\%$ confidence error box but its $J$-band luminosity (15.65) is lower than that of the well known emission line star DoAr25=B162623-244311 (9.29).\\
ROXRF7: (2) ROXR1-22 was identified with SR24N and SR24S (Casanova, S. et al.  1995, ApJ 439, 752). (5) In our observation \#2 and \#3 the counterpart of ROXRF7 is clearly associated with SR24S. 
In our observation \#1 due to the weakness of the X-ray source the situation is less clear. We associate this source with SR24S.\\
ROXRF9: (2) ROXR1-36 was ambiguously identified with GY193 and GY194 (Casanova, S. et al.  1995, ApJ 439, 752).\\
ROXRF12: (5) A weak star is visible in the 90$\%$ confidence error box on the DSS2 image, 
but this star is neither detected by the BKLT survey, nor by the PMM USNO-A1.0 catalogue.\\
ROXRF14: (3) ROXR2-22 was identified with ROXs20A and ROXs20B (Casanova, S. et al.  1995, ApJ 439, 752). \\
ROXRF19: (6) This source is just at the border of the {\it ISOCAM} survey. As a part of its flux is lost, Bontemps et~al. (2000, A\&A, submitted) 
do not characterize this source. (7) Mart{\'\i}n et~al. (1998, MNRAS 300, 733) classify these stars as CTTS. We thus consider this source as class II.\\
ROXRF21: (2) ROXR1-43 was identified with GY263 and IRS43 (Casanova, S. et al.  1995, ApJ 439, 752). (8) Best value from Grosso et~al. (1997, Nat 387, 56). 
(9) This is the bolometric luminosity (see Grosso et~al. 1997, Nat 387, 56).\\
ROXRF23: (2) ROXR1-46 was identified with an unnamed optical star (Casanova, S. et al.  1995, ApJ 439, 752), probably the star B162730-244726. 
(5) We identified this X-ray with the IR star B162728-244803 just at the border of the X-ray error box.\\
ROXRF24: (5) This source is red in the PMM USNO-A1.0 Catalogue (Monet et al. 1996, USNO-SA1.0 catalogue, U.S. Naval Observatory, Washington DC) with $B=20.1$ and $R=16.3$.\\
ROXRF25: (2) ROXR1-48 was identified with GY280, GY290, and GY291 (Casanova, S. et al.  1995, ApJ 439, 752).\\
ROXRF28: (5) The IR star B162735-244532:B is also in the 90$\%$ confidence error box but its $J$-band luminosity ($>17$) is lower 
than GY296=B162735-244532:A (12.62).\\
ROXRF37: (7) The {\it Hipparcos} distance is 75\,pc: this star is a foreground F2V star.
\end{table*}


\begin{table*}
{\noindent {\bf References to Table~\ref{tab:ident}:}\\
B = Barsony et al. (1997, ApJS 112, 109).\\
BBRCG = Barsony et al. (1989, ApJ 346, L93).\\
DoAr = Dolidze and Arakelyan (1979, SvA 3, 434).\\ 
El = Elias  (1978, ApJ 224, 453).\\
GSS = Grasdalen et al. (1973, ApJ 184, L53). \\
GY = Greene and Young (1992, ApJ 395, 516). \\
HD = The Henry Draper catalogue (Draper, H., 1918, Ann. Astron. Obs. Harvard Coll., 91).\\
IRS = Wilking et al. (1989, ApJ 340, 823). \\
ROXC = Montmerle et al. (1983, ApJ 269, 182). \\
ROXs = Bouvier and Appenzeller (1992, A\&AS 92, 481).\\
S = abbreviation for ``Source'' in Grasdalen et al. (1973, ApJ 184, L53). \\
SKS = Table 1 of Strom et al. (1995, ApJ 438, 813).\\
SR = Struve and  Rudkj{\"o}bing  (1949, ApJ 109, 92). \\
U = The PMM USNO-A1.0 Catalogue (Monet, D., et al., 1996, USNO-SA1.0 catalogue, U.S. Naval Observatory, Washington DC).\\
VSS = Vrba et al. (1976, AJ 81, 958). \\
VSSG = Vrba et al. (1975, ApJ 197, 77).\\
WL = Wilking and Lada (1983, ApJ 274, 698). \\ 
WSB = Wilking et al. (1987, AJ 94, 106).\\
YLW = Young et al. (1986, ApJ 340, 823).}
\end{table*}

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