Gordon03_SMCBar¶

class beast.physicsmodel.dust.extinction.Gordon03_SMCBar[source]¶

Gordon03 SMCBar extinction curve

Average of 4 SMCBar extinction curves from Gordon et al. 2003 (ApJ, 594, 279).

Note that Rv has no impact on this law: according to Gordon et al (2003), the average value of Rv is fixed to 2.74 +/- 0.13

Methods Summary

function(lamb[, Av, Rv, Alambda, draine_extend])

Gordon03_SMCBar extinction law

Methods Documentation

function(lamb, Av=1, Rv=2.74, Alambda=True, draine_extend=False, **kwargs)[source]¶

Gordon03_SMCBar extinction law

Parameters

lamb: float or ndarray(dtype=float): wavelength [in Angstroms] at which to evaluate the law.
Av: float: desired A(V) (default 1.0)
Rv: float: desired R(V) (default 2.74)
Alambda: bool: if set returns +2.5*1./log(10.)*tau, tau otherwise

Returns

r: float or ndarray(dtype=float): attenuation as a function of wavelength depending on Alambda option +2.5*1./log(10.)*tau, or tau