vice.solar_z

The VICE dataframe: derived class (inherits from noncustomizable)

Stores persistent data for each element.

Allowed Data Types

  • Keys
    • str [case-insensitive]elemental symbols

      The symbols of the elements as they appear on the periodic table.

  • Values

    • Any (cannot be modified)

Indexing

  • str [case-insensitive]elemental symbols

    Must be indexed by the symbol of an element recognized by VICE as it appears on the periodic table.

Functions

  • keys

  • todict

Built-In Instances

  • vice.atomic_number

    The atomic number (protons only) of each element.

  • vice.primordial

    The primordial abundance by mass \(Z\) of each element following big bang nucleosynthesis. This is zero for all elements with the exception of helium, which is assigned the standard model value of \(Y_\text{p} = 0.24672 \pm 0.00017\) 1 2 3.

    New in version 1.1.0.

  • vice.solar_z

    The abundance by mass of each element in the sun. This is adopted from Asplund et al. (2009) 4.

  • vice.sources

    The dominant astrophysical enrichment channels of each element. This is adopted from Johnson (2019) 5.

  • vice.stable_isotopes

    The mass number (protons + neutrons) of the stable isotopes of each element.

    New in version 1.1.0.

Example Code

>>> import vice
>>> vice.atomic_number['c']
        6
>>> vice.primordial['c']
        0
>>> vice.solar_z['c']
        0.00236
>>> vice.sources['c']
        ["CCSNE", "AGB"]
>>> vice.stable_isotopes['c']
        [12, 13]
1

Planck Collaboration et al. (2016), A&A, 594, A13

2

Pitrou et al. (2018), Phys. Rep., 754, 1

3

Pattie et al. (2018), Science, 360, 627

4

Asplund et al. (2009), ARA&A, 47, 481

5

Johnson (2019), Science, 363, 474

Signature: vice.core.dataframe.builtin_elemental_data(frame, name)

Warning

Users should avoid creating new instances of derived classes of the VICE dataframe and instead use the base class. Instances of this class are created automatically.