vice.primordial¶
The VICE dataframe: primordial abundances
Stores the abundance by mass of each element following big bang
nucleosynthesis. Stored values are of type float, and are 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.
Indexing¶
str[case-insensitive]The symbol of a chemical element as it appears on the periodic table.
Item Assignment¶
This instance of the VICE dataframe does not support item assignment.
Functions¶
keys
todict
Example Code¶
>>> import vice
>>> vice.primordial['o']
0.0
>>> vice.primordial['he']
0.24672
>>> vice.primordial['c']
0.0
