Detection curves#

Code author: Wilfried Mercier - LAM <wilfried.mercier@lam.fr>

Detection curves used for the intrinsic detection method.

See Mercier et al. (2025).

flux_detection_curve_pixel_level(z: ndarray[Any, dtype[_ScalarType_co]], cosmo: Cosmology) → ndarray[Any, dtype[_ScalarType_co]][source]#
flux_detection_curve_pixel_level(z: float | int, cosmo: Cosmology) → float

Code author: Wilfried Mercier - LAM <wilfried.mercier@lam.fr>

Compute the flux detection curve in \(\rm MJy\,sr^{-1}\) for a pixel in a galaxy at redshift z.

Parameters:

  • z (float, int, or NDArray) – redshift of the galaxy

  • cosmo (Cosmology) – cosmology used to convert to intrinsic physical quantities

Returns:

Flux detection curve at the pixel level evaluated at z for the given cosmology.

Return type:

mag_detection_curve(z: ndarray[Any, dtype[_ScalarType_co]], cosmo: Cosmology) → ndarray[Any, dtype[_ScalarType_co]][source]#
mag_detection_curve(z: float | int, cosmo: Cosmology) → float

Code author: Wilfried Mercier - LAM <wilfried.mercier@lam.fr>

Compute the AB magnitude detection curve for a substructure evaluated at redshift z.

Note

To get the detection threshold on the pixel level, one must divide the corresponding flux by 20 since the smallest substructures must be made of 20 pixels.

Parameters:

  • z (float, int, or NDArray) – redshift of the galaxy

  • cosmo (Cosmology) – cosmology used to convert to intrinsic physical quantities

Returns:

AB magnitude detection curve evaluated at z for the given cosmology.

Return type:

surface_detection_curve(z: ndarray[Any, dtype[_ScalarType_co]], cosmo: Cosmology) → ndarray[Any, dtype[_ScalarType_co]][source]#
surface_detection_curve(z: float | int, cosmo: Cosmology) → float

Code author: Wilfried Mercier - LAM <wilfried.mercier@lam.fr>

Compute the surface detection curve evaluated at redshift z in \(\rm arcsec^2\).

Parameters:

  • z (float, int, or NDArray) – redshift of the galaxy

  • cosmo (Cosmology) – cosmology used to convert to intrinsic physical quantities

Returns:

Surface detection curve evaluated at z for the given cosmology.

Return type: