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Table 2
Parameters for the eclipsing binary system HD 23642 using ellc_emcee.
| Parameter | This work | David et al. (2016) | Notes |
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|
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| t 0 | 119.52218 ± 0.00006 | 119.52207 ± 0.00002 | BJD-2 457 000 for mid-primary eclipse. |
| P [days] | 2.4611361 ± 0.0000048 | 2.4611341 ± 0.0000005 | |
| r1 = R1/a | 0.1435 ± 0.0032 | 0.1450 ± 0.0023 | |
| r2 = R1/a | 0.1274 ± 0.0050 | 0.1262 ± 0.0037 | |
| S Kp | 0.4756 ± 0.0053 | 0.4859 ± 0.0068 | Surface brightness ratio |
| i [ ° ] | 78.28 ± 0.15 | 78.21 ± 0.11 | |
| ℓ 2 / ℓ 1 | 0.38 ± 0.05 | 0.355 ± 0.035 | Both studies impose prior ℓ2/ℓ1 = 0.354 ± 0.035 |
| α 1 | =0.35 | 0.117 ± 0.002 | Reflection coefficient |
| α 2 | 0.344 ± 0.008 | 0.407 ± 0.007 | Reflection coefficient |
| Tld,1 [K] | 11 600 ± 900 | – | Limb-darkening look-up parameter |
| Tld,2 [K] | 8150 ± 160 | – | Limb-darkening look-up parameter |
|
16.4 ± 0.7 | – | Linear trend in magnitude |
| σ [mmag] | 0.67 | 0.67 | Root mean square residual |
Notes. Tld,1 and Tld,2 are the parameters used to interpolate the limb-darkening coefficients for stars 1 and 2 from the tabulation of Claret & Bloemen (2011).
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