Table 6.
Open in new tab

Parameters of four successful single-lens binary-finite-source parallax models, distinguished by the side on which each of the source stars passes relative to the lens near the peak. Given that all peak data have been acquired in I band and the binarity does not significantly affect the light curve outside the peak region, we use a single luminosity offset ratio ωI characteristic for I band. We adopted error bars arising from a scaling based on the off-peak data, and obtained a simple maximum-likelihood (ML) estimate on all data. The respective value of χ2 is reported for reference.

ModelSingle lens, parallax, binary finite source
Data selectionAll
Data setsAll
Data scalingu0 < 0 off-peaku0 < 0 off-peaku0 > 0 off-peaku0 > 0 off-peak
MinimisationML
Option|$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \lt 0$||$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \lt 0$|
|$t_0^{(1)}$|6931.228 ± 0.0076931.229 ± 0.0076931.234 ± 0.0076931.234 ± 0.007
|$t_0^{(2)}$|6932.989 ± 0.0076932.945 ± 0.0076932.944 ± 0.0076932.987 ± 0.007
tE [d]306 ± 19306 ± 19311 ± 19311 ± 19
|$u_0^{(1)}$|−0.0082 ± 0.0005−0.0082 ± 0.00050.0075 ± 0.00050.0075 ± 0.0005
|$u_0^{(2)}$|−0.00113 ± 0.000080.00142 ± 0.000080.00142 ± 0.00008−0.00116 ± 0.00008
πE, N−0.363 ± 0.009−0.363 ± 0.009−0.347 ± 0.009−0.347 ± 0.009
πE, E−0.178 ± 0.008−0.178 ± 0.008−0.158 ± 0.008−0.158 ± 0.008
ωI0.040 ± 0.0020.040 ± 0.0020.044 ± 0.0020.045 ± 0.002
|$\rho _\star ^{(1)}$|(8.0 ± 0.5) × 10−3(7.9 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3
|$\rho _\star ^{(2)}$|(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3
χ21715171517161716
ModelSingle lens, parallax, binary finite source
Data selectionAll
Data setsAll
Data scalingu0 < 0 off-peaku0 < 0 off-peaku0 > 0 off-peaku0 > 0 off-peak
MinimisationML
Option|$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \lt 0$||$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \lt 0$|
|$t_0^{(1)}$|6931.228 ± 0.0076931.229 ± 0.0076931.234 ± 0.0076931.234 ± 0.007
|$t_0^{(2)}$|6932.989 ± 0.0076932.945 ± 0.0076932.944 ± 0.0076932.987 ± 0.007
tE [d]306 ± 19306 ± 19311 ± 19311 ± 19
|$u_0^{(1)}$|−0.0082 ± 0.0005−0.0082 ± 0.00050.0075 ± 0.00050.0075 ± 0.0005
|$u_0^{(2)}$|−0.00113 ± 0.000080.00142 ± 0.000080.00142 ± 0.00008−0.00116 ± 0.00008
πE, N−0.363 ± 0.009−0.363 ± 0.009−0.347 ± 0.009−0.347 ± 0.009
πE, E−0.178 ± 0.008−0.178 ± 0.008−0.158 ± 0.008−0.158 ± 0.008
ωI0.040 ± 0.0020.040 ± 0.0020.044 ± 0.0020.045 ± 0.002
|$\rho _\star ^{(1)}$|(8.0 ± 0.5) × 10−3(7.9 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3
|$\rho _\star ^{(2)}$|(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3
χ21715171517161716
Table 6.
Open in new tab

Parameters of four successful single-lens binary-finite-source parallax models, distinguished by the side on which each of the source stars passes relative to the lens near the peak. Given that all peak data have been acquired in I band and the binarity does not significantly affect the light curve outside the peak region, we use a single luminosity offset ratio ωI characteristic for I band. We adopted error bars arising from a scaling based on the off-peak data, and obtained a simple maximum-likelihood (ML) estimate on all data. The respective value of χ2 is reported for reference.

ModelSingle lens, parallax, binary finite source
Data selectionAll
Data setsAll
Data scalingu0 < 0 off-peaku0 < 0 off-peaku0 > 0 off-peaku0 > 0 off-peak
MinimisationML
Option|$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \lt 0$||$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \lt 0$|
|$t_0^{(1)}$|6931.228 ± 0.0076931.229 ± 0.0076931.234 ± 0.0076931.234 ± 0.007
|$t_0^{(2)}$|6932.989 ± 0.0076932.945 ± 0.0076932.944 ± 0.0076932.987 ± 0.007
tE [d]306 ± 19306 ± 19311 ± 19311 ± 19
|$u_0^{(1)}$|−0.0082 ± 0.0005−0.0082 ± 0.00050.0075 ± 0.00050.0075 ± 0.0005
|$u_0^{(2)}$|−0.00113 ± 0.000080.00142 ± 0.000080.00142 ± 0.00008−0.00116 ± 0.00008
πE, N−0.363 ± 0.009−0.363 ± 0.009−0.347 ± 0.009−0.347 ± 0.009
πE, E−0.178 ± 0.008−0.178 ± 0.008−0.158 ± 0.008−0.158 ± 0.008
ωI0.040 ± 0.0020.040 ± 0.0020.044 ± 0.0020.045 ± 0.002
|$\rho _\star ^{(1)}$|(8.0 ± 0.5) × 10−3(7.9 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3
|$\rho _\star ^{(2)}$|(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3
χ21715171517161716
ModelSingle lens, parallax, binary finite source
Data selectionAll
Data setsAll
Data scalingu0 < 0 off-peaku0 < 0 off-peaku0 > 0 off-peaku0 > 0 off-peak
MinimisationML
Option|$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \lt 0$||$u_0^{(1)} \lt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \gt 0$||$u_0^{(1)} \gt 0$|⁠, |$u_0^{(2)} \lt 0$|
|$t_0^{(1)}$|6931.228 ± 0.0076931.229 ± 0.0076931.234 ± 0.0076931.234 ± 0.007
|$t_0^{(2)}$|6932.989 ± 0.0076932.945 ± 0.0076932.944 ± 0.0076932.987 ± 0.007
tE [d]306 ± 19306 ± 19311 ± 19311 ± 19
|$u_0^{(1)}$|−0.0082 ± 0.0005−0.0082 ± 0.00050.0075 ± 0.00050.0075 ± 0.0005
|$u_0^{(2)}$|−0.00113 ± 0.000080.00142 ± 0.000080.00142 ± 0.00008−0.00116 ± 0.00008
πE, N−0.363 ± 0.009−0.363 ± 0.009−0.347 ± 0.009−0.347 ± 0.009
πE, E−0.178 ± 0.008−0.178 ± 0.008−0.158 ± 0.008−0.158 ± 0.008
ωI0.040 ± 0.0020.040 ± 0.0020.044 ± 0.0020.045 ± 0.002
|$\rho _\star ^{(1)}$|(8.0 ± 0.5) × 10−3(7.9 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3(7.3 ± 0.5) × 10−3
|$\rho _\star ^{(2)}$|(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3(1.6 ± 0.1) × 10−3
χ21715171517161716
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