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Table C.3

Correlation coefficients of χ DIBs with strongest DIBs.

DIB 5849 5797 6196 6613 6270 5780 6009
Typeb C2ζ ζ ζσ ζσ c σ σ σ
q>0.95a 3 7 4 4 2 3 0
q>0.90 10 10 14 11 10 8 3
q>0.85 17 16 26 20 21 18 7
q>0.80 27 28 41 31 32 30 14
q>0.75 35 49 48 44 45 42 21
q>0.70 47 60 56 55 52 52 28

a Number of χ DIBs, among a total of 111, for which, e.g. qi > 0.95, where qi is their regular correlation coefficient with one of the seven major classical DIBs i listed here (excluding the sight lines of HD 175156 and HD 148579).

b DIB family type from Fan et al. (2022).

c λ6270 = λ6289.66 is a relatively narrow σ DIB close to the limit of ζσ DIBs in Fig. B2 of Fan et al. (2022). It is highly correlated with λ6613 (Table D.4) and λ6196 (q > 0.97).

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