\begin{table}%t1 \caption{\label{tab1}The description of the analysed stars and their observations. The observation time relates to the beginning of the exposure.} %\centering \small \begin{tabular}{lllccccll} \hline\hline HD & Sp. type & Spectrograph & Obs. date & Obs. time & $V$ &$E(B-V)$ &Binarity & Abundance analysis \\ & & & [UT] & [UT] & [mag]& [mag] & & \\ \hline 42677 & B8 & FEROS & 2002-01-27& 03:37:43& 7.79&0.06 & & \\ 43406 & B9 & ELODIE & 2003-01-27& 18:40:31& 7.16&0.00 & & \\ 43461 & B6V & FEROS & 2002-01-28& 00:40:32& 6.63&0.09 & & \\ 43743 & B9 & FEROS & 2002-01-28& 00:57:28& 7.70&0.00 & & \\ 44321 & B9 & FEROS & 2003-01-15& 02:41:10& 7.64&0.01 & & \\ 44354 & B9 & FEROS & 2003-01-17& 01:40:47& 7.70&0.01 & & \\ 44720 & B8 & FEROS & 2003-01-17& 01:58:58& 7.22&0.01 & & \\ 44948 & B8Vp & FEROS & 2003-01-17& 02:05:02& 6.73&0.02 & 3, 4, 5, 6, 7, 8 & \\ 45050 & B9V & FEROS & 2003-01-15& 03:11:35& 6.66&0.02 & 3, 4, 5, 6, 9, 10, 11 & \\ 45153 & B8 & FEROS & 2003-01-15& 03:16:54& 7.30&0.01 & & \\ 45397 & B8 & FEROS & 2003-01-14& 03:40:40& 7.81&0.01 & 3, 5, 6 & \\ 45515 & B8V & FEROS & 2003-01-17& 02:48:56& 7.88&0.01 & & \\ 45516 & B9 & FEROS & 2003-01-17& 02:56:49& 7.82&0.01 & & \\ 45563 & B9V & FEROS & 2003-01-15& 03:57:36& 6.48&0.00 & 5, 6 & \\ 45583 & B8 & FEROS & 2003-01-17& 03:11:31& 7.98&0.01 & &14, 15\\ 45657 & B9 & FEROS & 2002-01-28& 02:26:30& 7.89&0.00 & & \\ 45709 & B9 & FEROS & 2003-01-16& 01:05:41& 7.55&0.00 & & \\ 45760 & B9.5V & FEROS & 2003-01-15& 04:08:40& 7.56&0.00 & & \\ 45975 & B9 & FEROS & 2003-01-16& 01:29:11& 7.46&0.03 & & \\ 46138 & B9 & FEROS & 2003-01-14& 04:20:52& 7.46&0.00 & & \\ 46179 & B9V & ELODIE & 2003-01-16& 19:26:53& 6.69&0.02 & 3, 4, 5, 6 & \\ 46340 & B8 & FEROS & 2002-01-28& 03:27:09& 7.65&0.00 & 3, 4, 6 & \\ 46541 & B9 & FEROS & 2003-01-16& 01:41:58& 7.90&0.03 & & \\ & & & 2003-01-18& 00:54:29& & & & \\ 46885 & B9III & ELODIE & 2003-01-16& 20:27:27& 6.55&0.02 & & \\ 46886 & B9 & FEROS & 2002-01-28& 03:43:57& 7.95&0.01 & & \\ 47022 & B9 & ELODIE & 2003-01-16& 22:19:10& 7.74&0.00 & & \\ & & & 2003-01-15& 21:11:44& & & & \\ 47221 & B9 & ELODIE & 2003-01-27& 00:00:45& 7.81&0.00 & & \\ 47257 & B9 & ELODIE & 2003-01-18& 19:45:23& 7.26&0.00 & & \\ 47272 & B9V & ELODIE & 2003-01-24& 20:06:06& 7.62&0.03 & & \\ 47278 & B9 & FEROS & 2002-01-28& 04:45:28& 7.23&0.07 & & \\ 47431 & B8IIIn & ELODIE & 2003-01-16& 20:44:13& 6.57&0.03 & & \\ 47756 & B8IIIs & ELODIE & 2003-01-15& 23:42:53& 6.51&0.00 & & \\ 47759 & B9 & ELODIE & 2003-01-22& 21:27:32& 7.52&0.00 & & \\ 47964 & B8III & FEROS & 2003-01-15& 05:17:48& 5.79&0.00 & 3, 4, 5, 6 & \\ 48212 & B9 & ELODIE & 2003-01-26& 23:17:17& 7.80&0.04 & 4, 5, 6 & \\ 48497 & B8 & FEROS & 2003-01-16& 03:22:30& 7.50&0.00 & & \\ 48808 & B9 & FEROS & 2003-01-14& 05:18:29& 7.45&0.04 & & \\ 48957 & B9 & FEROS & 2003-01-15& 05:54:50& 8.00&0.03 & 4, 5, 6 & \\ 49123 & B9 & FEROS & 2003-01-17& 03:32:18& 7.22&0.02 & & \\ 49481 & B8 & FEROS & 2003-01-18& 04:07:10& 6.80&0.04 & & \\ 49643 & B8IIIn & FEROS & 2003-01-16& 05:06:34& 5.75&0.00 & 3, 4, 5, 6, 9, 12 & \\ 49711 & B8V & ELODIE & 2003-01-18& 20:52:53& 7.43&0.06 & & \\ 49713 & B9p & FEROS & 2003-01-15& 06:24:29& 7.32&0.00 & & \\ 49886 & B8 & FEROS & 2003-01-17& 03:52:32& 7.58&0.00 & & \\ 49935 & B8 & FEROS & 2003-01-16& 05:11:05& 6.86& -- & & \\ 50251 & B8V & FEROS & 2003-01-18& 04:25:34& 7.20&0.01 & & \\ 50252 & B9V & FEROS & 2003-01-17& 04:06:13& 7.95&0.07 & & \\ 50513 & B8 & FEROS & 2003-01-17& 04:21:58& 7.82&0.00 & & \\ 50751 & B8 & FEROS & 2003-01-17& 04:37:56& 7.90&0.00 & & \\ 51079 & B8V & FEROS & 2003-01-18& 05:12:03& 7.94&0.04 & & \\ 52312 & B9III & FEROS & 2003-01-18& 05:35:03& 5.96&0.01 & 3, 4, 5, 6 & \\ 53004 & B9 & FEROS & 2003-01-14& 07:00:14& 7.26&0.03 & 3, 4, 5, 6 & \\ 53083 & B8 & FEROS & 2003-01-15& 07:24:17& 7.10&0.02 & & \\ 53851 & B9 & FEROS & 2003-01-14& 07:21:06& 7.58&0.00 & & \\ 54929 & B9 & FEROS & 2003-01-18& 06:42:53& 7.34&0.02 & 3, 4, 5, 6 & \\ 55362 & B9 & FEROS & 2003-01-14& 07:58:01& 7.95&0.00 & & \\ 55793 & B8 & FEROS & 2003-01-14& 08:07:45& 7.86&0.01 & & \\ 56006 & B8 & FEROS & 2003-01-17& 07:04:32& 7.69&0.06 & & \\ 56446 & B8III & FEROS & 2003-01-15& 08:11:38& 6.65&0.00 & & \\ 56610 & B9 & FEROS & 2003-01-17& 07:19:19& 7.80&0.00 & & \\ 56613 & B9 & FEROS & 2003-01-18& 07:24:51& 7.10&0.00 & & \\ \hline 57275 & B9 & ELODIE & 2001-11-28& 03:24:06& 6.90&0.00 & 3, 4, 6, 5, 7 & \\ 57293 & B9III--IV& FEROS & 2003-01-16& 07:54:23& 7.99&0.03 & 3, 4, 6, 5, 7, 12 & \\ 168202 & B9 & ELODIE & 2002-08-15& 19:37:44& 7.50&0.00 & & \\ 168932 & B9 & FEROS & 2001-07-05& 02:56:50& 7.28&0.00 & 1, 2 & \\ 169224 & B9 & ELODIE & 2002-08-16& 20:11:21& 7.50&0.04 & & \\ 169225 & B9 & FEROS & 2001-07-05& 03:06:33& 7.72&0.01 & & \\ 169512 & B9 & ELODIE & 2002-08-19& 19:36:33& 7.91&0.15 & 3, 4, 5, 6, 7 & \\ 169578 & B9V & FEROS & 2001-07-06& 07:28:52& 6.73&0.09 & 1, 2 & \\ 170783 & B5 & ELODIE & 2000-06-18& 00:38:18& 7.73&0.34 & & \\ & & & 2000-06-18& 00:57:09& & & & \\ 170935 & B8 & ELODIE & 2002-08-18& 19:27:06& 7.38&0.20 & & \\ 171247 & B8IIIsp & FEROS & 2001-07-07& 04:42:34& 6.42&0.07 & 3, 4, 5, 6 &13\\ 171931 & B9 & FEROS & 2005-06-18& 02:07:17& 9.19&0.26 & & \\ 172850 & B9 & FEROS & 2001-07-05& 04:10:15& 7.75&0.08 & & \\ 173673 & B8 & FEROS & 2001-07-05& 04:43:37& 7.65&0.13 & & \\ 174701 & B9 & FEROS & 2001-07-05& 06:07:22& 8.00&0.15 & 4, 5, 6 & \\ 174836 & B9 & FEROS & 2001-07-05& 06:22:37& 7.89&0.00 & & \\ 174884 & B8 & ELODIE & 2000-06-10& 01:24:45& 7.99&0.00 & & \\ & & & 2000-06-10& 02:06:56& & & & \\ 176076 & B9 & FEROS & 2001-07-05& 07:19:25& 7.28&0.06 & & \\ 176158 & B9 & FEROS & 2001-07-05& 07:39:42& 7.52&0.22 & & \\ 176258 & B9V & FEROS & 2001-07-07& 05:44:09& 7.52&0.00 & & \\ 177756 & B9Vn & FEROS & 2001-07-06& 02:32:47& 3.43&0.00 & & \\ 177880 & B5V & FEROS & 2001-07-06& 04:23:07& 6.76&0.26 & 3, 4, 5, 6 & \\ 178744 & B5Vn & FEROS & 2001-07-05& 09:28:56& 6.33&0.00 & & \\ 179124 & B9V & FEROS & 2001-07-06& 09:12:42& 6.90&0.04 & & \\ 179761 & B8II--III& FEROS & 2001-07-07& 06:03:24& 5.14&0.05 & 3, 4, 5, 6 &16, 17, 18, 19, 20, 21, 22,\\ & & & & & & & &23, 24, 25, 26, 27, 28, 29,\\ & & & & & & & &30, 31 \\ 181440 & B9III & FEROS & 2001-07-05& 09:44:56& 5.48&0.02 & & \\ 181761 & B8 & FEROS & 2001-07-04& 09:34:12& 7.94&0.01 & & \\ 182198 & B9V & FEROS & 2001-07-06& 04:35:39& 7.94&0.04 & & \\ \hline \end{tabular} \medskip References: (1) Frankowski et~al. (\cite{frankowski}); (2) Makarov et~al. (2005); (3) Dommanget \& Nys (\cite{dommanget2000}); (4) Dommanget \& Nys (\cite{dommanget2002}); (5) Fabricius et~al. (\cite{fabricius}); (6) Mason et~al. (\cite{mason}); (7) Abt (\cite{abt1985}); (8) Horch et~al. (\cite{horch}); (9) Sowell \& Wilson (\cite{sowell}); (10) Abt \& Boonyarak (\cite{abt2004}); (11)~Abt (\cite{abt2005}); (12) Hartkopf et~al. (\cite{hartkopf}); (13) Leone \& Manfre (\cite{leone1996}); (14) Semenko et~al. (\cite{semenko}); (15) Levato \& Malaroda (\cite{levato}); (16) Searle et~al. (\cite{searle}); (17) Sargent et~al. (\cite{sargent}); (18) Durrant (\cite{durrant}); (19) Adelman (\cite{adelman1984}); (20) Adelman \& Fuhr (\cite{adelman1985}); (21) Adelman (\cite{adelman1991}); (22) Roby \& Lambert (\cite{roby}); (23) Adelman et~al. (\cite{adelman1993}); (24) Smith (\cite{smith1993}); (25) Smith \& Dworetsky (\cite{smithdworetsky1993}); (26) Smith (\cite{smith1994}); (27) Smith (\cite{smith1996}); (28)~Smith (\cite{smith1997}); (29) Adelman et~al. (\cite{adelman2004}); (30) Ryabchikova (\cite{ryabchikova}); (31) Cenarro et~al. (\cite{cenarro}). \end{table}