Table 1: Journal of observations.

date Spectral res. Instrument Telescope

$R = \lambda / \Delta\lambda$

Sep. 20-23, 1996 2100 CAFOS CA 2.2 m

Jan. 31-Feb. 3, 1997 2100 CAFOS CA 2.2 m

Jan. 2-6, 1998 1600 CAFOS CA 2.2 m

Feb. 18, 1998 22 000 CASPEC ESO 3.6 m

May 14-16, 1998 1300 DFOSC ESO Danish 1.54 m

Dec. 22-25, 1998 34 000 FOCES CA 2.2 m

Apr. 29-May 4, 1998 4600 CARELEC OHP 1.93 m

Oct. 21-16, 1998 20 000 AURELIE OHP 1.52 m

Jan. 11-15, 2000 34 000 FOCES CA 2.2 m

Jun. 13-18, 2000 34 000 FOCES CA 2.2 m

Dec. 3-6, 2001 34 000 FOCES CA 2.2 m

Feb. 19-23, 2002 34 000 FOCES CA 2.2 m

**Table 1:** Journal of observations.
date	Spectral res.	Instrument	Telescope
	$R = \lambda / \Delta\lambda$
Sep. 20-23, 1996	2100	CAFOS	CA 2.2 m
Jan. 31-Feb. 3, 1997	2100	CAFOS	CA 2.2 m
Jan. 2-6, 1998	1600	CAFOS	CA 2.2 m
Feb. 18, 1998	22 000	CASPEC	ESO 3.6 m
May 14-16, 1998	1300	DFOSC	ESO Danish 1.54 m
Dec. 22-25, 1998	34 000	FOCES	CA 2.2 m
Apr. 29-May 4, 1998	4600	CARELEC	OHP 1.93 m
Oct. 21-16, 1998	20 000	AURELIE	OHP 1.52 m
Jan. 11-15, 2000	34 000	FOCES	CA 2.2 m
Jun. 13-18, 2000	34 000	FOCES	CA 2.2 m
Dec. 3-6, 2001	34 000	FOCES	CA 2.2 m
Feb. 19-23, 2002	34 000	FOCES	CA 2.2 m

Source LaTeX | All tables | In the text

	1 Introduction
	2 The sample
	3 Spectroscopic observations
	4 Observational results
	5 Data analysis and discussion
	6 Conclusions
	Appendix A: Parameters of the sample and results
	References
	Online Material