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Table 10
Astrophysical data for V18, V20 and V80.
V18 | V20 | V80 | ||||
Primary | Secondary | Primary | Secondary | Primary | Secondary | |
|
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Absolute dimensions: | ||||||
M/M⊙ | 0.9955 ± 0.0033 | 0.9293 ± 0.0032 | 1.0868 ± 0.0039 | 0.8276 ± 0.0022 | 1.0588 ± 0.0091 | 0.8003 ± 0.0062 |
R/R⊙ | 1.1011 ± 0.0068 | 0.9708 ± 0.0089 | 1.397 ± 0.013 | 0.7813 ± 0.0053 | 1.341 ± 0.081 | 0.90 ± 0.18 |
log g (cgs) | 4.3524 ± 0.0053 | 4.4319 ± 0.0080 | 4.1840 ± 0.0078 | 4.5698 ± 0.0059 | 4.208 ± 0.052 | 4.43 ± 0.18 |
Teff (K)a | 5600 ± 95 | 5430 ± 125 | 5645 ± 95 | 4824 ± 140 | 5600 ± 95 | (...) |
vrot (km s-1)b | 4.0 ± 1.0 | 3.5 ± 1.0 | 4.50 ± 1.00 | (...) | 14.1 ± 2.0 | (...) |
vsync (km s-1)b | 2.96 ± 0.14 | 2.61 ± 0.13 | 4.88 ± 0.04 | 2.73 ± 0.02 | 13.88 ± 0.83 | 9.33 ± 1.9 |
V | 18.247 ± 0.020 | 18.740 ± 0.020 | 17.695 ± 0.020 | 19.874 ± 0.020 | (...)c | (...)c |
M V | 4.76 ± 0.10 | 5.22 ± 0.10 | 4.19 ± 0.10 | 6.44 ± 0.18 | (...)c | (...)c |
(V − MV) | 13.49 ± 0.10 | 13.52 ± 0.10 | 13.50 ± 0.10 | 13.44 ± 0.18 | (...)c | (...)c |
(V0 − MV) | 13.00 ± 0.13 | 13.03 ± 0.13 | 13.01 ± 0.13 | 12.95 ± 0.20 | (...)c | (...)c |
distance (kpc) | 3.98 ± 0.25 | 4.04 ± 0.25 | 4.00 ± 0.25 | 3.89 ± 0.34 | (...)c | (...)c |
Notes.
(a)
Teff values are our spectroscopic measurements, except for Teff of V20s, which is calculated as Teff of V20p minus the difference in photometrically predicted temperatures between V20p and V20s assuming E(B − V) = 0.16.
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