Characterisation of red supergiants in the Gaia spectral range

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Table E.1

Coefficients that define the split between the early and late subsamples in the multidimensional (15) space of the PCs.

	Boundary between early and late subsamples
	putative boundary at
	K5		M0		M1		M2		M3
PC	coef.	± σ	coef.	± σ	coef.	± σ	coef.	± σ	coef.	± σ


0th order	0.3	0.4	−0.3	0.5	−1.1	0.5	−1.7	0.5	−1.2	0.3
PC1	−0.06	0.06	0.06	0.05	−0.00	0.07	−0.01	0.06	0.09	0.04
PC2	−2.6	0.3	−2.7	0.2	−2.4	0.3	−1.6	0.2	−1.0	0.1
PC3	0.8	0.2	1.0	0.2	0.8	0.2	0.6	0.1	0.3	0.1
PC4	−0.2	0.3	−0.4	0.3	−0.1	0.3	−0.1	0.3	−0.5	0.2
PC5	0.5	0.2	0.1	0.2	0.2	0.1	−0.1	0.1	−0.2	0.1
PC6	−1.0	0.3	−1.1	0.2	−0.6	0.2	−0.5	0.2	−0.4	0.2
PC7	0.3	0.6	0.4	0.4	0.4	0.3	1.1	0.3	0.9	0.3
PC8	−0.7	0.4	−0.4	0.4	−0.8	0.4	−0.7	0.4	−0.7	0.3
PC9	0.6	0.4	0.7	0.3	0.3	0.3	0.4	0.3	0.3	0.3
PC10	−0.2	0.4	−0.3	0.3	0.1	0.3	−0.3	0.3	0.2	0.3
PC11	1.2	0.4	0.8	0.4	0.8	0.4	0.6	0.3	−0.3	0.2
PC12	−0.7	0.4	−1.4	0.4	−1.2	0.4	−0.6	0.4	−0.7	0.4
PC13	−0.3	0.3	−0.1	0.3	0.6	0.4	0.2	0.3	0.2	0.3
PC14	−0.5	0.3	−0.8	0.3	−0.4	0.3	−0.2	0.3	−0.5	0.3
PC15	−0.2	0.4	0.1	0.4	−0.1	0.4	0.5	0.4	−0.2	0.4

Notes. These coefficients were calculated from the shortened input list. The coefficients are given for the multiple putative boundaries used. Each one of these splits generates two subsamples: the early subsample will be formed by those objects considered earlier than the given putative boundary by the split, and the late subsample will be formed by those objects considered equal or later than the given putative boundary.

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