gaussian_fwhm¶
- specutils.analysis.gaussian_fwhm(spectrum, regions=None, analytic=True)[source]¶
Estimate the width of the spectrum using a second-moment analysis.
The value is scaled to match the full width at half max of a standard Gaussian profile. This will be calculated over the regions, if they are specified.
- Parameters:
- spectrum
Spectrum1D
The spectrum object overwhich the width will be calculated.
- regions
SpectralRegion
or list ofSpectralRegion
Region within the spectrum to calculate the FWHM value. If regions is
None
, computation is performed over entire spectrum.- analyticbool, optional
Set this flag to
False
to use theuncertainty
distribution-based calculation for the fwhm and its uncertainty instead of the default analytic solution.
- spectrum
- Returns:
- gaussian_fwhm
Quantity
or list (based on region input) Approximate full width of the signal at half max
- gaussian_fwhm
Notes
The spectrum should be continuum subtracted before being passed to this function.