interpolate_sersic_profile_dlnrho_dlnR_nearest

deprojected_sersic_models.interpolate_sersic_profile_dlnrho_dlnR_nearest(R=None, Reff=None, n=1.0, invq=5.0, path=None, filename_base='deproj_sersic_model', filename=None, interp_type='cubic')[source]

Interpolate dlnrho_g/dlnR at arbitrary radii R, for arbitrary Reff, using the nearest values of n and invq that are included in the Sersic profile table collection.

Finds the nearest n, invq for the “default” table collection, then calls interpolate_sersic_profile_dlnrho_dlnR() with these values.

Parameters:

  • R (float or array_like) – Radius at which to interpolate profile [kpc]

  • Reff (float) – Effective radius of Sersic profile [kpc]

  • n (float) – Sersic index

  • invq (float) – Inverse of the intrinsic axis ratio of Sersic profile, invq = 1/q.

  • path (str, optional) – Path to directory containing the saved Sersic profile tables. If not set, system variable DEPROJECTED_SERSIC_MODELS_DATADIR must be set. Default: system variable DEPROJECTED_SERSIC_MODELS_DATADIR, if specified.

  • filename_base (str, optional) – Base filename to use, when combined with default naming convention: <path>/<filename_base>_nX.X_invqX.XX.fits. Default: deproj_sersic_model

  • filename (str, optional) – Option to override the default filename convention and instead directly specify the file location.

  • interp_type (str, optional) – Default profile interpolation within the table Rarr region. (Extrapolation is always linear). Default: cubic

Returns:

dlnrho_dlnR_interp_nearest

Return type:

float or array_like