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Table 3

Derived fundamental parameters for δ Vel Aa and Ab.

Unit δ Vel Aa δ Vel Ab Vega

Mass M 2.43 ± 0.02 2.27 ± 0.02 2.3 ± 0.2
Luminosity L 67 ± 3 51 ± 2 37 ± 3
Polar Radius R 2.79 ± 0.04 2.37 ± 0.02 2.26 ± 0.07
Equ. Radius R 2.97 ± 0.02 2.52 ± 0.03 2.78 ± 0.02
Polar Teff. K 10 100 10 120 10 150
Equ. Teff. K 9700 9560 7900
Avg. Teff. K 9450 9830 9100
ω/ωcrit. 0.61 0.60 0.91
Polar log (g) cm s-2 3.90 4.10 4.10 ± 0.1
Eq. log (g) cm s-2 3.78 3.99 3.65 ± 0.1
i deg  ~90  ~90 4.7 ± 0.3
rotation rate 1/d 0.95 1.17 1.90

metallicity [M/H]  −0.331  −0.331  −0.52

Notes. Parameters for Vega are displayed for comparison and are adapted from Aufdenberg et al. (2006).

References.

1

Gray et al. (2006);

2

Castelli & Kurucz (1994).

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