cwitools.synthesis.obj_sb¶

cwitools.synthesis.obj_sb(fits_in, obj_cube, obj_id, var_cube=None, fill_bg=0, redshift=None)¶

Get surface brightness map from segmented 3D objects.

Input can be ~astropy.io.fits.HDUList, ~astropy.io.fits.PrimaryHDU or ~astropy.io.fits.ImageHDU. If HDUList given, PrimaryHDU will be used.

Returned objects will be of same type as input.

Parameters:	fits_in (astropy HDU or HDUList) – Input HDU/HDUList with 3D data. obj_cube (NumPy.ndarray) – Data cube containing labelled 3D regions. obj_id (list or int) – ID or list of IDs of objects to include. var_cube (NumPy.ndarray) – Data cube containing 3D variance estimate. redshift (float) – Redshift of the emission - provide to apply (1+z)^4 factor for cosmological surface brightness dimming correction.
Returns:	Surface brightness map and header. HDU / HDUList: (if var_cube given) Variance on surface brightness map, with header. Return type matches fits_in.
Return type:	HDU / HDUList*

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