extinction.fm07¶
-
extinction.
fm07
(wave, a_v, unit='aa')¶ Fitzpatrick & Massa (2007) extinction model for R_V = 3.1.
The Fitzpatrick & Massa (2007) [1] model, which has a slightly different functional form from that of Fitzpatrick (1999) [3] (
extinction_f99
). Fitzpatrick & Massa (2007) claim it is preferable, although it is unclear if signficantly so (Gordon et al. 2009 [2]). Defined from 910 A to 6 microns.Parameters: - wave : numpy.ndarray (1-d)
Wavelengths or wavenumbers.
- a_v : float
Scaling parameter, A_V: extinction in magnitudes at characteristic V band wavelength.
- unit : {‘aa’, ‘invum’}, optional
Unit of wave: ‘aa’ (Angstroms) or ‘invum’ (inverse microns).
References
[1] Fitzpatrick, E. L. & Massa, D. 2007, ApJ, 663, 320 [2] Gordon, K. D., Cartledge, S., & Clayton, G. C. 2009, ApJ, 705, 1320 [3] Fitzpatrick, E. L. 1999, PASP, 111, 63