SIMTERFERE: An optical interferometry simulator for quantifying the coherent flux stability of VLTI/GRAVITY+ - Reaching per mill stability: Application to exoplanet spectroscopy

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Table 3

Achieved absolute coherent flux precisions and corresponding ratios for the average and interpolation prediction method.

Baseline	Averaged (%)	Interpolated (%)	Ratio (−)
SC43	${0.224}_{- 0.026}^{+ 0.089}$ $Mathematical equation: $\[0.224_{-0.026}^{+0.089}\]$$	${0.204}_{- 0.009}^{+ 0.011}$ $Mathematical equation: $\[0.204_{-0.009}^{+0.011}\]$$	0.91
SC42	${0.235}_{- 0.029}^{+ 0.086}$ $Mathematical equation: $\[0.235_{-0.029}^{+0.086}\]$$	${0.215}_{- 0.014}^{+ 0.017}$ $Mathematical equation: $\[0.215_{-0.014}^{+0.017}\]$$	0.92
SC41	${0.27}_{- 0.04}^{+ 0.10}$ $Mathematical equation: $\[0.27_{-0.04}^{+0.10}\]$$	${0.25}_{- 0.04}^{+ 0.05}$ $Mathematical equation: $\[0.25_{-0.04}^{+0.05}\]$$	0.93
SC32	${0.269}_{- 0.028}^{+ 0.065}$ $Mathematical equation: $\[0.269_{-0.028}^{+0.065}\]$$	${0.248}_{- 0.014}^{+ 0.027}$ $Mathematical equation: $\[0.248_{-0.014}^{+0.027}\]$$	0.92
SC31	${0.25}_{- 0.03}^{+ 0.09}$ $Mathematical equation: $\[0.25_{-0.03}^{+0.09}\]$$	${0.224}_{- 0.008}^{+ 0.033}$ $Mathematical equation: $\[0.224_{-0.008}^{+0.033}\]$$	0.90
SC21	${0.28}_{- 0.04}^{+ 0.07}$ $Mathematical equation: $\[0.28_{-0.04}^{+0.07}\]$$	${0.245}_{- 0.015}^{+ 0.059}$ $Mathematical equation: $\[0.245_{-0.015}^{+0.059}\]$$	0.88
⟨SC⟩_b	${0.16}_{- 0.04}^{+ 0.11}$ $Mathematical equation: $\[0.16_{-0.04}^{+0.11}\]$$	${0.117}_{- 0.010}^{+ 0.044}$ $Mathematical equation: $\[0.117_{-0.010}^{+0.044}\]$$	0.73

Notes. The precision is defined as RMS temporal median with 16–84th percentile range uncertainties per baseline and baseline average. The ratio is given as the quotient between the median averaged and interpolated value.

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