\begin{table}%T1
\caption{Stars with reddened, featureless spectra.}\label{tab_red_featureless}
\begin{tabular}{cccccccll} 
\hline\hline
Star & $\alpha (2000)$ & $\delta(2000)$ & $J$ & $H$ & $K_{\rm S}$ & Vis. classification & Other IDs & Notes \\
\hline
  10 & 20  31  42.15 & 42  25  53.2 &   6.212 & 5.467 &  5.039 & B1Ib & & \\
  33 & 20  25  27.27 & 40  24  00.1 &   7.200 & 6.852 &  6.652 & & \object{BD+39 4179} & \\
  36 & 20  38  20.40 & 41  56  56.4 &   7.839 & 7.086 &  6.686 & B0II & & \\
  37 & 20  39  15.58 & 42  17  10.9 &   8.870 &  7.554 &  6.830 & & & 1 \\
  39 & 20  35  08.66 & 42  25  57.0 &   9.359 & 7.801 &  6.966 & & & 2 \\
  42 & 20  35  42.96 & 42  29  41.9 &   8.222 & 7.426 &  6.993 & & & 3 \\
  44 & 20  31  08.39 & 42  02  42.3 &   7.815 & 7.298 &  7.029 & B0II & \object{A41}& 4\\
  45 & 20  32  02.20 & 42  12  26.1 &   7.534 & 7.264 &  7.049 & B0.2III & \object{BD+41~3794} & \\
  60 & 20  27  52.95 & 41  44  06.8 &   8.152 & 7.580 &  7.271 & B0.2III & & \\
  62 & 20  23  22.84 & 40  09  22.5 &   7.581 & 7.421 &  7.286 & & \object{HD 229202} & 5 \\
  65 & 20  35  10.62 & 42  20  22.6 &   7.829 & 7.510 &  7.326 & B1III & \object {LS III +42 17} & 6 \\
  70 & 20  39  24.00 & 40  29  39.3 &   8.734 & 7.862 &  7.373 & & & \\
  72 & 20  26  10.44 & 39  51  51.9 &   8.745 & 7.847 &  7.388 & & & \\
  74 & 20  32  33.51 & 42  47  25.5 &   8.963 & 7.977 &  7.443 & & & \\
  75 & 20  41  05.74 & 39  55  19.5 &   8.526 & 7.806 &  7.448 & & & \\
  82 & 20  25  06.52 & 40  35  49.6 &   7.931 & 7.650 &  7.490 & O9V & \object{BD+40 4159} & \\
  93 & 20  40  29.78 & 42  03  13.7 &   9.243 & 8.156 &  7.619 & & & 7 \\
  94 & 20  25  33.19 & 40  48  44.5 &   8.337 & 7.900 &  7.639 & B1III & & \\
  96 & 20  26  46.79 & 40  05  57.0 &   8.955 & 8.073 &  7.655 & & & 8 \\
  97 & 20  38  21.72 & 41  57  06.8 &   8.755 & 8.037 &  7.680 & B0III & & \\
 100 & 20  39  45.06 & 42  06  07.8 &   8.470 & 7.984 &  7.712 & O9V & & \\
 101 & 20  27  17.57 & 39  44  32.6 &   8.100 & 7.822 &  7.727 & & \object{LS II +39 53} & 9\\
 108 & 20  23  14.54 & 40  45  19.3 &   8.157 & 7.932 &  7.783 & B1V & \object{BD+40~4149} & 10\\
 110 & 20  23  02.91 & 41  33  46.7 &   8.758 & 8.140 &  7.825 & B1III & & \\
 129 & 20  29  29.76 & 39  21  22.4 &   9.538 & 8.523 &  8.003 & & & \\
 130 & 20  40  33.68 & 40  22  45.1 &   9.775 & 8.606 &  8.028 & & & \\
 131 & 20  28  45.54 & 40  17  04.0 &   9.239 & 8.456 &  8.043 & & & \\
 132 & 20  37  17.74 & 41  56  31.4 &   9.092 & 8.379 &  8.053 & & & \\
 133 & 20  27  49.25 & 40  17  00.4 &   8.705 & 8.310 &  8.079 & B1III & & \\
 134 & 20  39  44.16 & 42  18  42.6 &   9.534 & 8.580 &  8.094 & & & 11 \\
 135 & 20  33  52.19 & 39  47  26.5 &   9.271 & 8.482 &  8.105 & & & \\
 137 & 20  23  07.58 & 40  46  09.0 &   8.480 & 8.244 &  8.126 & & & 10, 12 \\
 138 & 20  24  05.15 & 40  46  03.6 &   8.621 & 8.310 &  8.127 & B0.5V & \object{LS~III~+40~15} & \\
 140 & 20  39  34.10 & 41  16  56.5 &  10.080 & 8.800 &  8.140 & & & 13 \\
 143 & 20  35  22.96 & 42  22  02.4 &   9.417 & 8.613 &  8.155 & & & 14 \\
 146 & 20  23  07.30 & 40  46  55.2 &   8.504 & 8.254 &  8.206 & & & 10\\
 152 & 20  27  37.87 & 41  15  46.8 &   9.172 & 8.581 &  8.264 & O9.5V & & \\
 156 & 20  41  15.71 & 41  52  06.9 &  10.218 & 8.988 &  8.289 & & & 15\\
 159 & 20  26  24.88 & 40  01  41.4 &   9.044 & 8.569 &  8.322 & O9.5V & & 16 \\
 164 & 20  26  19.75 & 39  51  42.5 &   9.344 & 8.723 &  8.349 & O7V & & \\
 169 & 20  39  40.24 & 41  17  34.0 &  10.329 & 9.098 &  8.389 & & & 17 \\
 175 & 20  29  02.47 & 42  31  16.0 &   9.056 & 8.626 &  8.428 & B1III & & \\
 181 & 20  26  11.89 & 40  02  22.4 &   9.282 & 8.746 &  8.464 & B0III & & 18 \\
 183 & 20  29  18.68 & 39  36  15.8 &   9.793 & 8.910 &  8.471 & & & 19 \\
 185 & 20  22  50.95 & 41  13  50.7 &   9.785 & 8.973 &  8.519 & & & \\
 186 & 20  34  52.07 & 42  55  08.1 &   9.615 & 8.901 &  8.524 & & & \\
 189 & 20  33  50.76 & 39  59  38.7 &   9.675 & 8.925 &  8.541 & & & \\
 190 & 20  41  12.17 & 42  01  23.7 &  10.726 & 9.332 &  8.548 & & & 20 \\
 193 & 20  22  54.49 & 40  23  31.7 &   9.140 & 8.753 &  8.553 & B0.2III & & \\
 196 & 20  27  39.82 & 40  40  38.6 &   8.938 & 8.673 &  8.579 & B1V & & \\
 202 & 20  28  31.87 & 40  13  42.7 &  10.601 & 9.299 &  8.613 & & & \\
 204 & 20  35  29.68 & 42  16  24.3 &  10.669 & 9.308 &  8.618 & & & 21 \\
 205 & 20  35  18.14 & 42  23  48.4 &  10.052 & 9.075 &  8.620 & & & 22 \\
 206 & 20  25  28.89 & 40  12  54.2 &   9.058 & 8.750 &  8.627 & B0III & \object{LS~III +40~32} & 23 \\
 209 & 20  39  34.16 & 39  45  02.3 &  10.015 & 9.116 &  8.634 & & & \\
 219 & 20  22  54.30 & 40  27  41.2 &   9.085 & 8.806 &  8.700 & & \object{HD~229167} & \\
 220 & 20  36  32.51 & 39  36  47.2 &  10.054 & 9.189 &  8.713 & & & 24 \\
 222 & 20  37  30.82 & 40  27  52.0 &  10.580 & 9.351 &  8.723 & & & \\
 227 & 20  38  05.37 & 42  11  14.2 &   9.964 & 9.162 &  8.740 & & & \\
 229 & 20  27  20.99 & 41  21  26.2 &   9.460 & 8.981 &  8.746 & B1V & & \\
 230 & 20  41  43.65 & 41  31  45.2 &  10.090 & 9.224 &  8.767 & & & \\
 232 & 20  22  58.94 & 40  45  39.4 &   9.131 & 8.905 &  8.774 & B1V & & 25 \\
 242 & 20  38  26.96 & 42  27  44.8 &   9.876 & 9.145 &  8.823 & & & 26 \\
 244 & 20  31  06.24 & 41  59  32.4 &   9.615 & 9.128 &  8.824 & B1II & & \\
 246 & 20  26  40.87 & 40  59  46.9 &  11.198 & 9.652 &  8.829 & & & \\
 250 & 20  40  10.22 & 41  23  53.5 &  10.901 & 9.565 &  8.852 & & & 27 \\
 \hline
\end{tabular}
\smallskip
\noindent Notes\\
   1: In DR~21, possibly associated to the radiosource \object{WSRTGP
2037+4206} (Taylor et~al.~\cite{taylor96}).\\
2: In DR~17. 3: In DR~17. Brightest star in cluster~14 of Le Duigou \& Kn\"odlseder~(\cite{leduigou02}).\\
4: In Comer\'on et~al.~(\cite{comeron02}); classified as O9.7II by
Hanson~(\cite{hanson03}).\\
5: Classified as O8V: by Morgan et~al.~(\cite{morgan55}); X-ray emission (\cite{chlebowski89}).\\
6: Possibly related to the HII region \object{G081.3+01.1} in
\object{DR17}.\\
7: In DR~23. Brightest star in cluster 15 of Le Duigou \&
Kn\"odlseder~(\cite{leduigou02}).\\
8: Possibly associated to DR~5.\\
9: Classified as O7V: by Vijapurkar \& Drilling~(\cite{vijapurkar93}).\\
10: Member of cluster \object{NGC~6910}.\\
11: In DR~21.\\
12: Classified as B0.5V by Hoag \& Applequist~(\cite{hoag65})\\
13: In DR~22, member of cluster 11 of Le Duigou \& Kn\"odlseder~(\cite{leduigou02}).\\
14: In DR~17, member of cluster 12 of Le Duigou \& Kn\"odlseder~(\cite{leduigou02}).\\
15: In cluster associated to \object{DR 23} (Bica et~al.~\cite{bica03}).\\
16: Possibly associated to DR~5.\\
17: In DR~22. \\
18: Possibly associated to DR~5.\\
19: Possibly associated to the radiosource \object{MITGJ2029+3936}
(Griffith et~al.~\cite{griffith91}).\\
20: Possibly associated to DR~23.\\
21: In DR~17.\\
22: In DR~17.\\
23: Possibly associated to DR~5.\\
24: Probably associated to \object{IRAS~20346+3926A}.\\
25: In cluster NGC~6910 (Delgado \& Alfaro~\cite{delgado00}).\\
26: In DR~21.\\
27: Possibly associated to DR~22.
\end{table}