ZDA04¶

class dust_extinction.grain_models.ZDA04(modelname='BARE-GR-S', **kwargs)[source]¶

Bases: BaseExtGrainModel

Zubko, Dwek, & Arendt (2004) Grain Models

Parameters:

None

Raises:

None

Notes

BARE-GR-S model from Zubko, Dwek, & Arendt (2004, ApJS, 152, 211) Calculated by K. Misselt using ZDA04 grain size distributions and compositions

Example showing the possible curves

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

from dust_extinction.grain_models import ZDA04

fig, ax = plt.subplots()

tmod = ZDA04()
possmodels = tmod.possnames.keys()

# generate the curves and plot them
lam = np.logspace(-3.0, 4.0, num=1000)
x = (1.0 / lam) / u.micron

for cmodel in possmodels:
    # define the extinction model
    ext_model = ZDA04(cmodel)
    ax.plot(lam,ext_model(x),label=cmodel)

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

ax.set_xscale('log')
ax.set_yscale('log')

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

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

../_images/dust_extinction-grain_models-ZDA04-1.png

Attributes Summary

`possnames`
`x_range`

Attributes Documentation

possnames = {'BARE-GR-S': ('zubko2004_bare-gr-s_alam_av.dat', 3.1)}¶

x_range = [0.0001, 1000.0]¶

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ZDA04¶