Table 1
Infrared polarization: dependence on scattering properties.
Model | Cloud particle | Degree of polarizatione | ||
foblate = 0.0 | foblate = 0.1 | foblate = 0.2 | ||
|
||||
S1 | Mie, MgSiO3a, reff = 0.1μm, veff = 0.05 | 0.42 +/– 0.07 % | 0.72 +/– 0.07 % | 1.23 +/– 0.08 % |
S2 | Mie, MgSiO3, reff = 0.1μm, veff = 0.05, λ = 1.67μmb | 0.21 +/– 0.04 % | 0.38 +/– 0.04 % | 0.59 +/– 0.04 % |
S3 | Henyey-Greenstein, gHG = 0.5, ωcloud = 1 | 0.15 +/– 0.04 % | 0.26 +/– 0.05 % | 0.47 +/– 0.05 % |
S4 | Henyey-Greenstein, gHG = 0.9, ωcloud = 1 | 0.06 +/– 0.08 % | 0.08 +/– 0.09 % | 0.19 +/– 0.10 % |
S5 | Mie, MgSiO3, reff = 1.0μm, veff = 0.1 | 0.07 +/– 0.03 % | 0.07 +/– 0.04 % | 0.16 +/– 0.04 % |
S6 | DHSc, MgSiO3, reff = 1.0μm, veff = 0.1, fDHS = 0.8d | 0.06 +/– 0.03 % | 0.14 +/– 0.04 % | 0.21 +/– 0.04 % |
Notes.
Complex refractive indices obtained from Dorschner et al. (1995).
Central wavelength of the SPHERE/IRDIS H3 filter which is sensitive to methane absorption. For the other models, we used the central wavelength of the SPHERE/IRDIS H2 continuum filter, λ = 1.59μm.
Irregularly shaped particle properties are approximated with a distribution on hollow spheres (DHS; Min et al. 2005).
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