A comparison between X-shooter spectra and PHOENIX models across the HR-diagram

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Table 2

Standard deviations of the color-differences between XSL and external datasets (from Gonneau et al. 2020).

External	Color	Standard deviation	Comments
reference		σ (mag)
MILES	(420–490)	0.03	0.056 incl. 7 outliers
MILES	(580–670)	0.02	0.032 incl. 3 outliers
IRTF	(J − H)	0.023	0.033 incl. 6 outliers
IRTF	(H − K_s)	0.019	0.029 incl. 4 outliers
2MASS	(J − H)	0.032	0.050 incl. 2MASS errors
2MASS	(H − K_s)	0.038	0.056 incl. 2MASS errors

Notes. The synthetic colors in the first two lines are measured in 600 or 800 nm-wide rectangular filters centered on the wavelengths indicated in the color-name, in nanometers. The 2MASS standard deviations listed each include six 4-σ outliers. The outliers are not the same for all colors.

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