\begin{table}%t1
\caption{Program Stars -- observations are from either the 1m JKT (Lennon
et~al. \cite{Lennon1992}), 2.5~m INT or 4.2~m WHT (northern) or 1.5~m CTIO 
(southern).  Two
estimates of interstellar reddenings are given, based on intrinsic colours adopted
from Schmidt-Kaler (\cite{Schmidt1982}) and from theoretical continuum fits to UV spectrophotometry 
and optical photometry (no spectrophotometry was available for HD~194279 or HD~148688). 
The majority of our targets are probable cluster/association members,
whilst absolute magnitudes are adopted for the remainder, based on average values of
Magellanic Cloud members from Fitzpatrick (1991),  Parker (1993) and
 Massey et~al. (1995), except  that  HD~190603 is set at $M_{V}=-7.5$~mag. 
References to  cluster/association distances are: 
(a)~Brown et~al. (\cite{Brown1994}); (b)~Blaha \& Humphreys (1989); 
(c)~Baume et~al. 1999;
(d)~Baume et al (2003); (e)~Garmany \& Stencel (1992); (f)~Humphreys (1978).\label{table1}}
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 \hline\hline
HD & Name & Sp type & $V$ & $B-V$ & \multicolumn{2}{c}{$E(B-V)$}  &Assoc.& 
DM&Ref &  $M_{V}$ & $\Delta M_{V}$ & Obs\\
   &      &         &mag& mag & $(B-V)_{0}$     & UV      & mag     &    & mag & mag \\
\hline
30614 & $\alpha$ Cam & O9.5~Ia &4.29&+0.02 & 0.29& 0.32 &          &10.0 & & --6.6 & $\pm$  0.5 & WHT\\  
37128 & $\epsilon$ Ori & B0~Ia &1.70&--0.19& 0.05&0.06 & Ori OB1b & 7.8 &a& --6.3 & $\pm$  0.5 & WHT/INT\\ 
91969 &                & B0~Ia &6.52&+0.00 & 0.24&0.26& NGC3293 &12.2 &d&--6.4 & $\pm$ 0.3 & CTIO \\ 
94909 &                & B0~Ia &7.34&+0.48 &0.72 &0.75$\ddag$&         &11.5 & &--6.4 & $\pm$ 0.5 & CTIO\\ 
122879&                & B0~Ia &6.42&+0.12 &0.36 &0.37&         &11.7 & &--6.4 & $\pm$ 0.5 & CTIO \\ 
38771 & $\kappa$ Ori & B0.5~Ia&2.05&--0.18 &0.04 &0.07 & Ori OB1c & 8.0 &a&--6.1 &$\pm$ 0.5 & WHT/INT\\ 
115842&              &B0.5~Ia &6.02&+0.29 &0.51  &0.57$\ddag$&         & 11.3& &--6.9 & $\pm$ 0.5 & CTIO\\ 
152234&        &B0.5~Ia (N wk)&5.44&+0.20 &0.42  &0.45& Sco OB1 & 11.5&c&--7.4 & $\pm$ 0.5 & CTIO\\ 
2905&$\kappa$ Cas&BC0.7~Ia &4.16&+0.14 & 0.35  & 0.39& Cas OB14& 10.2 &b&--7.1 & $\pm$ 0.3 & WHT/INT\\ 
91943 &            & B0.7~Ia &6.73&+0.07 & 0.28 &0.22$\ddag$& NGC~3293& 12.2 &d&--6.3  & $\pm$ 0.3 & CTIO \\ 
152235&      & B0.7~Ia (N wk)&6.34&+0.51 & 0.72 &0.75$\ddag$& Sco OB1 & 11.5 &c&--7.4 & $\pm$ 0.5 & CTIO \\ 
154090&            & B0.7~Ia &4.87&+0.26 & 0.47 &0.49$\ddag$&         & 10.2 & &--6.8 & $\pm$ 0.5 & CTIO \\ 
13854&             & B1~Iab& 6.48&+0.28& 0.47  &0.55& Per OB1 & 11.8 &e&--6.8 & $\pm$ 0.5 & WHT/INT\\ 
91316& $\rho$  Leo & B1~Iab (N str)&3.85 &--0.14& 0.05 & 0.06  &         & 10.5 & &--6.8 & $\pm$ 0.5 & CTIO \\ 
148688&            & B1~Ia  &5.33 &+0.33& 0.52  &0.52$\ddag$&        & 10.5 & &--6.8 & $\pm$ 0.5 & CTIO \\
14956 &            & B1.5~Ia &7.19 &+0.72 &0.90  &0.95$\ddag$& Per OB1 & 11.8 &e& --7.4  & $\pm$ 0.5 & WHT/INT\\ 
152236& $\zeta^{1}$ Sco & B1.5~Ia$^{+}$ &4.73 &+0.48 & 0.66 &0.69&Sco OB1& 11.5&c& --8.8 & $\pm$ 0.5 & CTIO\\
190603& & B1.5~Ia$^{+}$    &5.65 &+0.54 &0.72  & 0.80$\ddag$&  & 10.9 & &--7.5 & $\pm$ 1.0 & WHT/INT\\
14143 &        & B2~Ia  & 6.66 &+0.50 &0.67 &0.70& $h$ Per  & 11.8  &e&--7.2  & $\pm$ 0.3 & WHT/INT\\ 
14818 & 10 Per & B2~Ia & 6.25 &+0.30 &0.47 &0.52& Per OB1 & 11.8 &e&--7.0 & $\pm$ 0.5 & WHT/INT\\ 
41117 & $\chi^2$ Ori & B2~Ia & 4.63 & +0.28 & 0.45 & 0.48&Gem OB1 & 10.9 & b&--7.6 & $\pm$ 0.3 & WHT\\ 
194279&        & B2~Ia  & 7.05 &+1.02 &1.19  &1.26$\ddag$&Cyg OB9  & 10.4  &f&--7.0   & $\pm$ 0.3 & WHT/INT\\ 
198478 & 55  Cyg& B2.5~Ia & 4.86& +0.42 & 0.57 &0.59&Cyg OB7 & 9.5 &f&--6.4 & $\pm$ 0.3& WHT\\ 
14134 &          & B3~Ia & 6.55&+0.45  & 0.58 &0.65$\ddag$&$h$ Per& 11.8  &e&--7.1 & $\pm$ 0.3 & JKT/INT \\
53138 &$o^2$ CMa & B3~Ia & 3.01&--0.08 & 0.05 & 0.07&     & 10.2  & &--7.3 & $\pm$ 0.5 &JKT/INT\\
\hline 
\end{tabular}}
\parbox{16cm}{
$\ddag$: UV spectrophotometry absent or poor quality, leading to 
uncertain reddening from this technique.}
%\end{center}
\end{table}