from typing import Tuple
from autogalaxy.profiles.mass.stellar.sersic import Sersic
[docs]class Exponential(Sersic):
def __init__(
self,
centre: Tuple[float, float] = (0.0, 0.0),
ell_comps: Tuple[float, float] = (0.0, 0.0),
intensity: float = 0.1,
effective_radius: float = 0.6,
mass_to_light_ratio: float = 1.0,
):
"""
The Exponential mass profile, the mass profiles of the light profiles that are used to fit and
subtract the lens model_galaxy's light.
Parameters
----------
centre
The (y,x) arc-second coordinates of the profile centre.
ell_comps
The first and second ellipticity components of the elliptical coordinate system.
intensity
Overall flux intensity normalisation in the light profiles (electrons per second).
effective_radius
The circular radius containing half the light of this profile.
mass_to_light_ratio
The mass-to-light ratio of the light profiles
"""
super().__init__(
centre=centre,
ell_comps=ell_comps,
intensity=intensity,
effective_radius=effective_radius,
sersic_index=1.0,
mass_to_light_ratio=mass_to_light_ratio,
)
[docs]class ExponentialSph(Exponential):
def __init__(
self,
centre: Tuple[float, float] = (0.0, 0.0),
intensity: float = 0.1,
effective_radius: float = 0.6,
mass_to_light_ratio: float = 1.0,
):
"""
The Exponential mass profile, the mass profiles of the light profiles that are used to fit and subtract the lens
model_galaxy's light.
Parameters
----------
centre
The (y,x) arc-second coordinates of the profile centre.
intensity
Overall flux intensity normalisation in the light profiles (electrons per second).
effective_radius
The circular radius containing half the light of this profile.
mass_to_light_ratio
The mass-to-light ratio of the light profiles.
"""
super().__init__(
centre=centre,
ell_comps=(0.0, 0.0),
intensity=intensity,
effective_radius=effective_radius,
mass_to_light_ratio=mass_to_light_ratio,
)