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Table 2

R5495-dependent values of optical and NIR spline anchor points based on the law of MA14.

λ (Å) λ−1 (µm−1) Aλ/(A4405A5495)
0.000 0.0
26 500 0.377 −0.1097 + 0.1195 × R5495
18 000 0.556 −0.2046 + 0.2228 × R5495
12 200 0.820 −0.3826 + 0.4167 × R5495
10 000 1.000 −0.5270 + 0.5740 × R5495
8696 1.150 −0.6392 + 0.7147 × R5495
5495 1.820 −0.0002 + 1.0000 × R5495
4670 2.141 0.7455 + 1.0023 × R5495
4405 2.270 1. 0004 + 1.0000 × R5495
4110 2.433 1. 3149 + 0.9887 × R5495
3704 2.700 1.7931 + 0.9661 × R5495
3304 3.027 2.2580 + 0.9689 × R5495

Notes. For the interpolation between these points we use a cubic spline and the function interpolate.splrep of the Python package scipy (Virtanen et al. 2020). R5495 is the monochromatic equivalent of RV : R5495 = A5495/(A4405A5495).

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