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Table 1

“Warm” and “cool” dust luminosities for the total galaxy, the disk of the galaxy and the spiral arms of the galaxy.

Total galaxy

Ltotal = 1.9 × 109L
Lw = 7.8  × 108L (41% Ltotal)
Lc = 1.1  × 109L (59% Ltotal)

Disk

Ldisk = 5.7 × 108L (30% Ltotal)
L (32% Lw, 44% Ldisk)
L (29% Lc, 56% Ldisk)

Spiral arms

Lspiral = 1.3 × 109L (70% Ltotal)
L (68% Lw, 40% Lspiral)
L (71% Lc, 60% Lspiral)

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