vice.yields.ccsne.engines.E16.mu4¶
Type : list
[elements of type float
]
The quantity \(\mu_4\) at the time of core collapse for stars with
ZAMS masses given by the attribute masses
. \(\mu_4\) is defined
as the normalized mass derivative in a region defined by the
dimensionless energy per nucleon of \(s\) = 4:
Ertl et al. (2016) [1] conclude that the quantities \(M_4\) and \(\mu_4\) can predict whether or not a massive star will produce a core collapse supernova based on the following criterion with only a few exceptions (~1 - 2.5%):
where they report \(a\) = 0.283 and \(b\) = 0.043 as best fit
values. The values of \(a\) and \(b\) are controlled by the
attributes slope
and intercept
, respectively.
Note
This attribute’s values are adopted from Sukhbold et al. (2016) [2].
Example Code¶
>>> from vice.yields.ccsne.engines import E16
>>> E16.mu4
[1.79891e-05,
0.000933825,
0.00210795,
...,
0.0896075,
0.103897,
0.0759102]