hyperion.dust.IsotropicDust¶
-
class
hyperion.dust.
IsotropicDust
(nu, albedo, chi)¶ This class should be used for dust properties that include isotropic scattering. The dust properties should be instatiated as:
d = IsotropicDust(nu, albedo, chi)
where
nu
,albedo
, andchi
are 1-D Numpy arrays containing the frequencies, albedo, and opacity to extinction respectively.Method
set_sublimation_temperature
(self, mode[, …])Set the dust sublimation mode and temperature.
set_sublimation_specific_energy
(self, mode)Set the dust sublimation mode and specific energy.
set_lte_emissivities
(self[, n_temp, …])Calculate the emissivities assuming LTE
plot
(self, filename)read
(self, filename)Read in from a standard dust file
write
(self, filename[, compression])Write out to a standard dust file, including calculations of the mean opacities and optionally thermal emissivities.
temperature2specific_energy
(self, temperature)Convert a temperature to its corresponding specific energy value.
specific_energy2temperature
(self, …)Convert a specific energy value to its corresponding temperature.
chi_nu_temperature
(self, temperature)Compute the mean opacity to extinction for a blackbody at a given temperature.
kappa_nu_temperature
(self, temperature)Compute the mean opacity to absorption for a blackbody at a given temperature.
chi_nu_spectrum
(self, nu, fnu)Compute the mean opacity to extinction for a given spectrum.
kappa_nu_spectrum
(self, nu, fnu)Compute the mean opacity to absorption for a given spectrum.
Methods (detail)
-
set_sublimation_temperature
(self, mode, temperature=0.0)¶ Set the dust sublimation mode and temperature.
- Parameters
- modestr
- The dust sublimation mode, which can be:
‘no’ - no sublimation
- ‘fast’ - remove all dust in cells exceeding the
sublimation temperature
- ‘slow’ - reduce the dust in cells exceeding the
sublimation temperature
- ‘cap’ - any temperature exceeding the sublimation
temperature is reset to the sublimation temperature.
- temperaturefloat, optional
The dust sublimation temperature, in K
-
set_sublimation_specific_energy
(self, mode, specific_energy=0.0)¶ Set the dust sublimation mode and specific energy.
- Parameters
- modestr
- The dust sublimation mode, which can be:
‘no’ - no sublimation
- ‘fast’ - remove all dust in cells exceeding the
sublimation specific energy
- ‘slow’ - reduce the dust in cells exceeding the
sublimation specific energy
- ‘cap’ - any specific energy exceeding the sublimation
specific energy is reset to the sublimation specific energy.
- specific_energyfloat, optional
The dust sublimation specific energy, in cgs
-
set_lte_emissivities
(self, n_temp=1200, temp_min=0.1, temp_max=100000.0)¶ Calculate the emissivities assuming LTE
- Parameters
- n_tempint, optional
The number of temperatures to calculate the emissivities for
- temp_minfloat, optional
The minimum temperature to calculate the emissivities for
- temp_maxfloat, optional
The maximum temperature to calculate the emissivities for
-
plot
(self, filename)¶
-
read
(self, filename)¶ Read in from a standard dust file
-
write
(self, filename, compression=True)¶ Write out to a standard dust file, including calculations of the mean opacities and optionally thermal emissivities.
-
temperature2specific_energy
(self, temperature)¶ Convert a temperature to its corresponding specific energy value.
- Parameters
- temperaturefloat or array_like
The temperature to convert
- Returns
- specific_energyfloat or array_like
The specific energy corresponding to the input temperature
-
specific_energy2temperature
(self, specific_energy)¶ Convert a specific energy value to its corresponding temperature.
- Parameters
- specific_energyfloat or array_like
The specific energy to convert
- Returns
- temperaturefloat or array_like
The temperature corresponding to the input specific energy
-
chi_nu_temperature
(self, temperature)¶ Compute the mean opacity to extinction for a blackbody at a given temperature.
- Parameters
- temperaturefloat
The temperature of the blackbody to use
- Returns
- chi_nu_meanfloat
The mean opacity to extinction
-
kappa_nu_temperature
(self, temperature)¶ Compute the mean opacity to absorption for a blackbody at a given temperature.
- Parameters
- temperaturefloat
The temperature of the blackbody to use
- Returns
- kappa_nu_meanfloat
The mean opacity to absorption
-
chi_nu_spectrum
(self, nu, fnu)¶ Compute the mean opacity to extinction for a given spectrum.
- Parameters
- nuarray_like
The frequencies, in Hz
- fnuarray_like
The monochromatic fluxes per unit frequency. Units are unimportant since proportionality constants are cancelled out in the computation.
- Returns
- chi_nu_meanfloat
The mean opacity to extinction
-
kappa_nu_spectrum
(self, nu, fnu)¶ Compute the mean opacity to absorption for a given spectrum.
- Parameters
- nuarray_like
The frequencies, in Hz
- fnuarray_like
The monochromatic fluxes per unit frequency. Units are unimportant since proportionality constants are cancelled out in the computation.
- Returns
- kappa_nu_meanfloat
The mean opacity to absorption
-