Table 5: Stellar parameters of three close B3V stars, alpha Ara, alpha Eri and eta UMa.
  Alpha Ara Alpha Eri Eta UMa
V 2.9 0.5 1.7
Dist.i 74.3 $\pm$ 6 pc 44.1 $\pm$ 1.4 pc 30.9 $\pm$ 0.7 pc
$v
\sin i$ 270 km s-1 225 km s-1 150 km s-1
B-V -0.17 -0.17 -0.17
V-Kii 0.4 -0.4 -0.5
$R_{\rm eq}$iii 4.8 $R_{\odot}$ 12 $\pm$ 0.4 $R_{\odot}$ 4.8 $R_{\odot}$
$R_{\rm pol}$iii 4.8 $R_{\odot}$ 7.7 $\pm$ 0.2 $R_{\odot}$ 4.8 $R_{\odot}$
i Hipparcos distance.
ii From 2MASS photometry.
iii 4.8 is the statistical value for this B3V star, the radius
for alpha Eri is from Domiciano de Souza et al. (2003).

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