Table 2: Stars used as radial velocity standards. Columns: (1) HD number (Hipparcos Catalogue field H71); (2) Hipparcos identifier (H1); (3) V magnitude (H5); (4) spectral type and luminosity class (H76); (5) number of spectra obtained (N; subtractions refer to rejected exposures due to detector instability); (6) multiplicity (G: Hipparcos acceleration binary; S: Hipparcos suspected non-single - field H61) (7) assumed radial velocity (km s^-1; see Sect. 4.1 for details); (8) idem from Morse et al. (1991; Table 6; Table 4 for HD 23408); (9) radial velocity in km s^-1 from Fekel (1985; Table 3); (10) idem from Wolff (1978; range < ; Tables 1 and 3); (11) idem from Abt & Levy (1978; Table 1); (12) idem from Gies & Bolton (1986; Table 3); (13) idem from Latham & Stefanik (1982; Table 1).

HD	HIP	V	SpT+LCl	N	Mult.	Radial velocity [km s-1]
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)
1438	1501	6.10	B8V	3		+3.3	.	.	.	.	.	+3.3
3360	2920	3.69	B2IV	3-1		-0.3	-0.3	.	.	+1.0	.	+0.5
10982	8387	5.86	B9V	3-1		+5.0	.	.	+5.0	.	.	.
17081	12770	4.24	B7IV	2-1		+15.4	+15.4	+14.3	.	.	.	.
23408	17573	3.87	B8III	2		+6.5	+6.5	.	.	.	.	+7.6
26912	19860	4.27	B3IV	2-1		+14.9	+14.9	.	.	+15.5	.	.
27638	20430	5.38	B9V	2	S	+14.4	.	.	.	.	.	+14.4
28114	20715	6.06	B6IV	2-1		+12.9	.	.	+12.9	.	.	+13.4
35708	25539	4.88	B2.5IV	2		+17.0	+17.0	+18.1	.	+15.2	.	+18.4
36267	25813	4.20	B5V	3-1		+19.8	.	.	.	+19.8	.	.
38899	27511	4.89	B9IV	2		+21.6	+21.6	+21.6	+22.2	.	.	+20.9
43112	29678	5.91	B1V	2		+37.3	+37.3	.	.	.	+35.8	.
58142	36145	4.61	A1V	5-1		+26.0	+26.0	+27.2	.	.	.	+26.9
196724	101867	4.81	A0V	6-1	G	-18.4a	-12.0	.	.	.	.	.
196821	101919	6.08	A0III	4-1		-31.3	.	-31.3	-31.6	.	.	.
201345	104316	7.78	O9p	1		+21.6	.	.	.	.	+21.6	.
214994	112051	4.80	A1IV	5	G	+9.1	+9.1	+7.5	.	.	.	+8.5
217811	113802	6.37	B2V	3		-11.2	-11.2	.	.	.	.	-10.2
219188	114690	7.06	B0.5III	4-1		+48.0b	.	.	.	.	+68.0	.
220599	115591	5.56	B9III	2		+12.0	.	.	+12.0	.	.	.

a Fekel 1990 (cf. Liu et al. 1989). b SIMBAD.