autogalaxy.Redshift#

class Redshift[source]#

Class used when assigning a redshift to a Galaxy object.

This object is only required when making the Redshift of the Galaxy a free parameter in a model that is fitted.

This is because PyAutoFit (which handles model-fitting), requires all parameters to be a Python class.

The Redshift object does not need to be used for general PyAutoGalaxy use.

Examples

import autofit as af import autogalaxy as ag

bulge = af.Model(ag.lp.Sersic)

redshift = af.Model(ag.Redshift) redshift.redshift = af.UniformPrior(lower_limit=0.0, upper_limit=2.0)

galaxy = af.Model(ag.Galaxy, redshift=redshift, bulge=bulge)

model = af.Collection(galaxies=af.Collection(galaxy=galaxy))

Methods

`as_integer_ratio`	Return integer ratio.
`conjugate`	Return self, the complex conjugate of any float.
`fromhex`	Create a floating-point number from a hexadecimal string.
`hex`	Return a hexadecimal representation of a floating-point number.
`is_integer`	Return True if the float is an integer.

Attributes

`imag`	the imaginary part of a complex number
`real`	the real part of a complex number