The mass of the white dwarf in YY Dra (=DO Dra): Dynamical measurement and comparative study with X-ray estimates

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Volume 690 (October 2024)

A&A, 690 (2024) A218

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Table 6.

Best-fit parameters of the simultaneous modelling of the light and radial velocity curves using XRBCURVE.

Parameter	Prior	Value
γ (km s⁻¹)	[−30.0, 10.0]	−5 ± 1
K₂ (km s⁻¹)	[160, 250]	$188_{- 2}^{+ 1}$ $188^{+1}_{-2}$
cos i	[0.5, 0.99]	0.74 ± 0.02
v_rotsin i (km s⁻¹)	103 ± 2	103 ± 2
d_pc	195 ± 1	195 ± 1
T₂(K)	[3250, 3700]	$3413_{- 150}^{+ 134}$ $3413^{+134}_{-150}$
$\log F_{X, 0}^{LC 1} (erg s^{- 1} {cm}^{- 2})$ $\mathrm{log} \, F_{\mathrm{X,0}}^{\mathrm{LC1}} \mathrm{(\mathrm{erg}\,\mathrm{s}^{-1} \, \mathrm{cm}^{-2})}$	[−14.0, −9.0]	−12.5 ± 1.0
$\log F_{X, 0}^{LC 2} (erg s^{- 1} {cm}^{- 2})$ $\mathrm{log} \, F_{\mathrm{X,0}}^{\mathrm{LC2}} \mathrm{(\mathrm{erg}\,\mathrm{s}^{-1} \, \mathrm{cm}^{-2})}$	[−14.0, −9.0]	$- 10 . 7_{- 0.7}^{+ 0.2}$ $-10.7^{+0.2}_{-0.7}$
$f_{phot}^{1}$ $f^{1}_{\mathrm{phot}}$	[0.3, 1.0]	$0 . 87_{- 0.11}^{+ 0.09}$ $0.87^{+0.09}_{-0.11}$
$f_{phot}^{2}$ $f^{2}_{\mathrm{phot}}$	[0.3, 1.0]	$0 . 82_{- 0.10}^{+ 0.08}$ $0.82^{+0.08}_{-0.10}$
H/R	[0.01, 0.2]	0.10 ± 0.06
F_AV	[1.0, 5.0]	3.0 ± 1.3
δϕ_LC1	[−0.15, 0.15]	0.012 ± 0.005
δϕ_LC2	[−0.15, 0.15]	0.014 ± 0.008
δϕ_RVC	[−0.15, 0.15]	0.000 ± 0.001

Notes. Priors indicated between brackets are flat, while priors expressed as value ± uncertainty are Gaussian.

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