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Table 3.

IR AGN colour–colour classification schemes.

Spitzer IRAC power law
Alonso-Herrero et al. (2006), Donley et al. (2007)

Power law

Spitzer IRAC colour–colour (flux densities)
Lacy et al. (2007), Donley et al. (2012);
Kirkpatrick et al. (2012)
x = log10(S5.8 μm/S3.6 μm),  y = log10(S8 μm/S4.5 μm)

L07

D12

K12

Spitzer IRAC colour–colour (magnitudes)
Stern et al. (2005)
x = [5.8]V − [8.0]V,  y = [3.6]V − [4.5]V

S05

Ks-IRAC-MIPS
Messias et al. (2012), Messias et al. (2014)
x = [Ks]AB − [4.5]AB,  y = [4.5]AB − [8.0]AB,
w = [8.0]AB − [24]AB

KI

KIM

WISE
Mateos et al. (2012), Jarrett et al. (2011);
Stern et al. (2012)
x = [4.6]V − [12]V,  y = [3.4]V − [4.6]V

M12

J11

S12

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