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Table 1. Material parameters: the material density, μ is the mean molecular weight, H is the latent heat of sublimation, and P0 is the saturated vapor pressure Pv in the limit of high temperature.

From: Sublimation temperature of circumstellar dust particles and its importance for dust ring formation

  material density [g cm 3] μ H [erg g] P0 [dyn cm−2]
olivine 3.3 169.1 3.21 × 1010 6.72 × 1014
pyroxene 3.3 60.1 9.60 × 1010 3.12 × 1011
obsidian 2.37 67.0 7.12 × 1010 1.07 × 1014
carbon 1.95 12.0 7.27 × 1011 4.31 × 1016
iron 7.86 55.8 2.97 × 1010a 5.00 × 104a
pure ice 1.0 18 2.83 × 1010b 3.08 × 1013b
dirty ice 1.4 18 2.83 × 1010 2.67 × 1013b
  1. Note—obsidian is formed as an igneous rock and may not be plausible as interplanetary dust, but is applied for a comparison with previous studies (e.g., Mukai and Yamamoto, 1979).
  2. a,bH and P0 are obtained from the following formulae with the sublimation temperature of each material.
  3. aPv = 1.33 × 104 exp(−2108/T + 16.89 − 2.14lnT) dyncm (Lamy, 1974).
  4. b logPv = −2445.5646/T + 8.2312 log T − 0.01677006 T + 1.20514 × 10T2 − 3.63227 (Pv in the cgs unit; Washburn, 1928).