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Table 1

MIR interstellar effective extinction, A/AKS$\[\langle A\rangle / A_{K_S}\]$.

Filter λref Δλ Curve 2 (Ros)(*)
(A9.7/A2.12 = 1.0)
Curve 3 (Ros+Fritz)(**)
(A9.7/A2.12 = 1.0)
Curve 4 (Gordon)(***)
(A9.7/A2.12 ≈ 0.7)
Wang(****) Cλ (2) Cλ (3) Cλ (4)
A/AKS$\[\langle A\rangle / A_{K_S}\]$ A/AKS$\[\langle A\rangle / A_{K_S}\]$ A/AKS$\[\langle A\rangle / A_{K_S}\]$ A/AKS$\[\langle A\rangle / A_{K_S}\]$
(μm) (μm)
MSX A 8.28 4.0 0.380 0.490 0.340 4.797 5.831 4.506
MSXC 12.1 2.1 0.491 0.491 0.320 5.843 5.843 4.374
MSX D 14.6 2.4 0.292 0.292 0.219 4.201 4.201 3.808
MSX E 21.3 6.9 0.405 0.405 0.300 4.998 4.998 4.249
Glimpse [3.6] 3.55 0.75 0.435 0.447 0.486 0.47 ± 0.04 5.264 5.378 5.786
Glimpse [4.5] 4.49 1.01 0.298 0.402 0.351 0.33 ± 0.04 4.237 4.973 4.582
Glimpse [5.8] 5.73 1.42 0.196 0.368 0.250 0.24 ± 0.04 3.699 4.706 3.965
Glimpse [8.0] 7.87 2.93 0.295 0.408 0.266 0.32 ± 0.04 4.218 5.024 4.052
WISE W1 3.35 0.66 0.475 0.479 0.525 0.50 ± 0.05 5.665 5.708 6.261
WISE W2 4.60 1.04 0.284 0.398 0.337 0.33 ± 0.05 4.154 4.940 4.486
WISE W3 11.56 5.51 0.527 0.534 0.376 0.51 ± 0.12 6.288 6.382 4.766
WISE W4 22.09 4.10 0.394 0.394 0.294 4.908 4.908 4.213

Notes. WISE filter specifications are from Jarrett et al. (2011). SPITZER filter specifications are from Fazio et al. (2004). MSX filter wavelengths are from https://irsa.ipac.caltech.edu/Missions/msx.html. (*)This column is based on the curve 2 of Messineo et al. (2005), which is the Rosenthal et al. (2000) curve. (**)Curve 3 is again the Rosenthal et al. (2000) curve modified in the at 3–8 urn to include the more recent observations of Fritz et al. (2011). (***)This column is based on the interstellar extinction curve obtained by Gordon et al. (2021) using stellar spectra taken with the Spitzer satellite. (****)Values obtained with broad-band photometry by Wang & Chen (2019). The Cλ=CλJKs+CλHKs$\[C_\lambda=C_\lambda^{J K s}+C_\lambda^{H K s}\]$ values are calculated using Eqs. (2) and (4). Cλ(2) refers to curve 2, Cλ(3) refers to curve 3, and Cλ(4) refers to curve 4.

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