RedshiftScaleFactor

class astropy.modeling.functional_models.RedshiftScaleFactor(z=0, **kwargs)

Bases: astropy.modeling.Fittable1DModel

One dimensional redshift scale factor model.

Parameters

zfloat

Redshift value.

Notes

Model formula:

\[f(x) = x (1 + z)\]

Attributes Summary

param_names
z

Methods Summary

evaluate(x, z)	One dimensional RedshiftScaleFactor model function
fit_deriv(x, z)	One dimensional RedshiftScaleFactor model derivative

Attributes Documentation

param_names = ('z',)

z = Parameter('z', value=0.0)

Methods Documentation

static evaluate(x, z)

One dimensional RedshiftScaleFactor model function

static fit_deriv(x, z)

One dimensional RedshiftScaleFactor model derivative