Average Extinction Curves for the Magellanic Clouds

From K. D. Gordon, G. C. Clayton, K. A. Misselt, A. U. Landolt, & M. J. Wolff 2003, ApJ, in press

SMC Bar average
R_V = 2.74 ± 0.13
N(HI)/A(V) = (13.18 ± 1.02)X10²¹ HI atoms/mag
ASCII file of extinction curve

LMC2 Supershell average
R_V = 2.76 ± 0.09
N(HI)/A(V) = (6.97 ± 0.67)X10²¹ HI atoms/mag
ASCII file of extinction curve

LMC Average average
R_V = 3.41 ± 0.06
N(HI)/A(V) = (3.25 ± 0.28)X10²¹ HI atoms/mag
ASCII file of extinction curve