F11_MWGC

class dust_extinction.averages.F11_MWGC(**kwargs)

Bases: BaseExtModel

Fritz et al (2011) MW Galactic Center Curve

Parameters:

None

Raises:

None

Notes

From Fritz et al. (2011, ApJ, 737, 73)

Example showing the average curve

import numpy as np
import matplotlib.pyplot as plt
import astropy.units as u

from dust_extinction.averages import F11_MWGC

fig, ax = plt.subplots()

# define the extinction model
ext_model = F11_MWGC()

# generate the curves and plot them
x = np.arange(1.0/ext_model.x_range[1], 1.0/ext_model.x_range[0], 0.1) * u.micron

ax.plot(x,ext_model(x),label='F11_MWGC')
ax.plot(1.0/ext_model.obsdata_x, ext_model.obsdata_axav, 'ko',
        label='obsdata')

ax.set_xlabel(r'$\lambda$ [$\mu m$]')
ax.set_ylabel(r'$A(x)/A(V)$')

ax.legend(loc='best')
plt.show()

(Source code, png, hires.png, pdf)

Attributes Summary

Rv
x_range

Methods Summary

evaluate(in_x)

F11 MWGC function

Attributes Documentation

Rv = 3.1

x_range = [0.05246039240373518, 0.7800312012480499]

Methods Documentation

evaluate(in_x)

F11 MWGC function

Parameters:

in_x: float

expects either x in units of wavelengths or frequency or assumes wavelengths in wavenumbers [1/micron]

internally wavenumbers are used

Returns:

axav: np array (float)

A(x)/A(V) extinction curve [mag]

Raises:

ValueError

Input x values outside of defined range