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Table 7

Physical parameters of IO Aqr components.

Parameter Primary Secondary Tertiary

Spectral type F5 V-IV F6 V-IV ~K6 V
M (M) 1.569(4) 1.655(4) 0.6(1)
R (R) 2.191(15) 2.493(17)
log g (cgs) 3.952(6) 3.863(6)
Teff (K) 6475(138) 6336(125) ~ 4000
L (L) 7.59(55) 9.00(65)
MV (mag) 2.57(8) 2.39(8) ~ 7.7
BCV (mag) −0.021 −0.030

Distance (pc) 255(9)
Distance modulus (mag) 7.030(72)
Parallax (mas) 3.93(13)
E(BV) (mag) 0.027(20)

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