I've been looking for examples at how mass-loss rates are determined.

I'm studying a circumstellar dust shell ejected from a Wolf-Rayet star. I have some parameters like, expansion velocity of the shell (60km/s), the dust mass of the shell (0.1 M_sun), the radii of the shell (R_in=10000 AU and R_out=60000) and its age (T=26000 yrs).

I was wondering if there's a formula relating those parameters and if they are sufficient to determine the dust mass-loss rate or its dependent on other factors.

Could anyone help?

  • $\begingroup$ You're looking for information on dust mass loss, not general mass loss, correct? $\endgroup$
    – HDE 226868
    Commented Jan 8, 2016 at 2:42
  • $\begingroup$ @HDE226868 yes, that's correct. $\endgroup$
    – S. Mas
    Commented Jan 8, 2016 at 10:05
  • $\begingroup$ Cross-posted to Astronomy. $\endgroup$
    – HDE 226868
    Commented Jan 8, 2016 at 22:39
  • $\begingroup$ By dust, do you mean small (i.e., micron-sized or smaller) silicate-like particles or is this a term used in astronomy similar to how everything except hydrogen is a metal? If the former, are you looking at dust that has "fallen in" or thinking that the dust originates from the stellar atmosphere? $\endgroup$ Commented Jan 13, 2016 at 14:02
  • $\begingroup$ @honeste_vivere i mean the former, micron-sized (silicates/metallic iron/PAH's) dust grains. I'm looking at dust that originates in stellar atmospheres and that's been ejected away from the star by stellar winds. $\endgroup$
    – S. Mas
    Commented Jan 18, 2016 at 10:42


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