fit_redshift

msaexp.spectrum.fit_redshift(file='jw02767005001-02-clear-prism-nrs2-2767_11027.spec.fits', z0=[0.2, 10], zstep=None, eazy_templates=None, nspline=None, scale_disp=1.3, vel_width=100, Rline=None, is_prism=False, use_full_dispersion=False, ranges=None, sys_err=0.02, **kwargs)

Fit spectrum for the redshift

Parameters

filestr

Spectrum filename

z0(float, float)

Redshift range

zstep(float, float)

Step sizes in dz/(1+z)

eazy_templateslist, None

List of eazy.templates.Template objects. If not provided, just use dummy spline continuum and emission line templates

nsplineint

Number of splines to use for dummy continuum

scale_dispfloat

Scale factor of nominal dispersion files, i.e., scale_disp > 1 increases the spectral resolution

vel_widthfloat

Velocity width the emission line templates

Rlinefloat

Original spectral resolution used to sample the line templates

is_prismbool

Is the spectrum from the prism?

use_full_dispersionbool

Convolve eazy_templates with the full wavelength-dependent dispersion function

rangeslist of tuples

Wavelength ranges for the subplots

sys_errfloat

Systematic uncertainty added in quadrature with nominal uncertainties

Returns

figFigure

Diagnostic figure

spTable

A copy of the 1D spectrum as fit with additional columns describing the best-fit templates

datadict

Fit metadata