Table 1: Numbers of stars at various selection steps as a function of relative parallax error. The three BB2k columns show: number of RHB sample stars found, total number of measurements, number of stars that are fainter than 7.3 mag, the completeness limit of the H IPPARCOS mission.
$\frac{\Delta \pi}{\pi}$ HIP RHBs BB2k

stars meas. >7.3 mag

$\leq$ 10% 17 295 547 455 480 0

$\leq$ 15% 28 700 1393 828 890 28

$\leq$ 20% 38 114 2241 1044 1127 103

$\leq$ 25% 45 622 3084 1215 1313 211

$\leq$ 30% 51 231 3795 1327 1437 305

**Table 1:** Numbers of stars at various selection steps as a function of relative parallax error. The three BB2k columns show: number of RHB sample stars found, total number of measurements, number of stars that are fainter than 7.3 mag, the completeness limit of the H IPPARCOS mission.
$\frac{\Delta \pi}{\pi}$	HIP	RHBs	BB2k
			stars	meas.	>7.3 mag
$\leq$ 10%	17 295	547	455	480	0
$\leq$ 15%	28 700	1393	828	890	28
$\leq$ 20%	38 114	2241	1044	1127	103
$\leq$ 25%	45 622	3084	1215	1313	211
$\leq$ 30%	51 231	3795	1327	1437	305

Source LaTeX | All tables | In the text

	1 Introduction
	2 Establishing the RHB data sample
	3 Error limits and selection effects
	4 The spatial distribution of RHB stars
	5 Effects of galactic mass models
	6 Comparing the distribution of RHB stars with other types
	References