tardis.model.matter.composition module¶

class tardis.model.matter.composition.Composition(density, nuclide_mass_fraction, raw_isotope_abundance, element_masses, element_masses_unit=Unit('g'))[source]¶

Bases: object

Holds information about model composition

Parameters

densityastropy.units.quantity.Quantity: An array of densities for each shell.
isotopic_mass_fractionpd.DataFrame
raw_isotope_abundancepd.DataFrame
atomic_masspd.DataFrame
atomic_mass_unit: astropy.units.Unit

Attributes

atomic_masspd.DataFrame: Atomic mass of elements calculated for each shell.
elemental_number_densitypd.DataFrame: Elemental Number Density computed using the formula: (elemental_mass_fraction * density) / atomic mass

assemble_isotope_masses()[source]¶

calculate_cell_masses(volume)[source]¶

Calculate the cell masses.

Parameters

volumeastropy.units.quantity.Quantity
The volume of the cell.

Returns

astropy.units.quantity.Quantity
An array of cell masses.

Examples

>>> composition.calculate_cell_masses(10 * u.cm**3)

calculate_elemental_cell_masses(volume)[source]¶

Calculate the elemental cell masses.

Parameters

volumeastropy.units.quantity.Quantity
The volume of the cell.

Returns

numpy.ndarray
An array of elemental cell masses.

Examples

>>> composition.calculate_cell_masses(10 * u.cm**3)

calculate_mass_fraction_at_time(time_explosion)[source]¶

Calculate the mass fraction at a given time using the radioactive decay from the IsotopicMassFraction.

Parameters

time_explosionastropy.units.quantity.Quantity: The time of the explosion.

Returns

None

Examples

>>> composition.calculate_mass_fraction_at_time(10 * u.s)

static convert_element2nuclide_index(element_index)[source]¶

property effective_element_masses¶

property element_masses¶: Atomic mass of elements in each shell

property elemental_mass_fraction¶

property elemental_number_density¶: Elemental Number Density computed using the formula: (elemental_mass_fraction * density) / atomic mass

property isotopic_mass_fraction¶

property isotopic_number_density¶: Isotopic Number Density computed using the formula: (isotopic_mass_fraction * density) / atomic mass

tardis.model.matter.composition.compile_rd_isotope_masses()[source]¶

Compiles the masses of isotopes from the default data in RD_DEFAULT_DATA.

Parameters

None

Returns

pandas.Series: A series containing the masses of isotopes, indexed by atomic number and mass number.