Modelling of eclipsing binary systems with pulsating components and tertiary companions: BF Vel and RR Lep

Open Access

Table 3.

Results of optimal curve-fitting to the RV curves and light curves of RR Lep using WD modelling.

Parameter	B	V	TESS

			Sector 5	Sector 32
T₀ (HJD)	2455953.2674		2459174.6486
P (d)	0.91542575

a (R_⊙)	6.19 ± 0.03	6.11 ± 0.19	6.20 ± 0.03	6.17 ± 0.04
V₀ (km s⁻¹)	−43.5±0.7	−43.9±1.6	−44.0 ± 0.8	−44.0 ± 1.0
K₁ (km s⁻¹)	71.8 ± 9.4	69.1 ± 6.1	71.7 ± 3.7	69.4 ± 4.9
K₂ (km s⁻¹)	265.8 ± 25.0	265.6 ± 13.4	265.6 ± 3.9	266.8 ± 8.7
Δϕ	−0.0034 ± 0.0003	−0.0020 ± 0.0002	0.0007 ± 0.0001	0.0002 ± 0.0001
i (°)	80.8 ± 0.6	82.4 ± 0.4	79.9 ± 0.1	80.4 ± 0.2
T₁ (K)	8100 (fixed)
T₂ (K)	5005 ± 51	4870 ± 38	4346 ± 18	4467 ± 420
Ω₁	2.82 ± 0.02	2.84 ± 0.02	2.80 ± 0.07	2.80 ± 0.01
Ω₂	2.41	2.37	2.39	2.39
q = M₂/M₁	0.27 ± 0.01	0.26 ± 0.01	0.27 ± 0.01	0.26 ± 0.01
r₁ (mean)	0.40 ± 0.02	0.40 ± 0.02	0.41 ± 0.01	0.41 ± 0.01
r₂ (mean)	0.27 ± 0.01	0.27 ± 0.02	0.27 ± 0.01	0.27 ± 0.01
L₁	0.86 ± 0.02	0.82 ± 0.02	0.89 ± 0.02	0.88 ± 0.02
L₂	0.04 ± 0.01	0.06 ± 0.01	0.07 ± 0.01	0.07 ± 0.01
L₃	0.10 ± 0.02	0.12 ± 0.02	0.04 ± 0.005	0.05 ± 0.008

$χ_{red}^{2}$ $\chi^{2}_{\mathrm{red}}$ (RV₁)	1.31	1.86	1.16	1.33
$χ_{red}^{2}$ $\chi^{2}_{\mathrm{red}}$ (RV₂)	1.37	1.41	1.46	1.45
ν (RV)	17	17	17	17
ΔRV₁ (km s⁻¹)	4	4	4	4
ΔRV₂ (km s⁻¹)	12	12	12	12

$χ_{red}^{2}$ $\chi^{2}_{\mathrm{red}}$ (LC)	2.82	2.35	2.04	1.42
ν (LC)	1014	970	17230	3496
Δl (LC)	0.007	0.007	0.003	0.003

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