typo correction

Author: mfouesneau

doc/vega.rst

@@ -73,7 +73,7 @@ of Vega of which we summarize the most relevant ones below:
 * `alpha_lyr_005` from Colina, Bohlin & Castelli (1996), Instrument Science Report (`OSG-CAL-96-01 <https://www.stsci.edu/instruments/observatory/PDF/scs8.rev.pdf>`_). It corresponds to the combination of ultraviolet covered by average IUE spectrum; Optical up to 1.05 microns covered by Hayes (1985) average spectrum (IAU Symp 111, p 225); near-infrared covered by ATLAS12 based model computed by Dr. Castelli, rebinned to 25A, and normalized to Hayes (1985) Johnson V flux. V filter as in Buser & Kurucz 1979, AA 70, 555. (All wavelengths are vacuum.)
 * `alpha_lyr_stis_003` (legacy) from `Bohlin (2007) <https://ui.adsabs.harvard.edu/abs/2007ASPC..364..315B>`_ a special model from Kurucz 9400K Vega spectrum T/g=9400/3.9 [M/H]=-0.5 fit against STIS data with microturbulence of 0. km/s, and where V = 0.023 mag.
 * `alpha_lyr_mod_001` from `Bohlin (2014) <https://ui.adsabs.harvard.edu/abs/2014AJ....147..127B>`_ Special Model from Kurucz 9400K Vega spectrum T/g=9400/3.9 [M/H]=-0.5 at R=500 which reconciles visible and IR absolute flux, and where Vega Flux(5556A)=3.44e-9
-* `alpha_lyr_mod_002` is identical to `alpha_mod_001` but normalized to STIS flux at 5545-5570A, corresponding to a scaled flux by $0.994242$.
+* `alpha_lyr_mod_002` is identical to `alpha_mod_001` but normalized to STIS flux at 5545-5570A, corresponding to a scaled flux by 0.994242.
 * `alpha_lyr_mod_003` is a different temperature, logg using Kurucz 9550K Vega spectrum T/g=9550/3.95 [M/H]=-0.5 at R=500 and normalized to Flux(5556A) = 3.44e-9 (over 5545-5570A).
 * `alpha_lyr_mod_004` from `Bohlin, Hubeny, Rauch (2020) <https://ui.adsabs.harvard.edu/abs/2020AJ....160...21B>`_ is similar to `alpha_mod_003` but with a Flux(5556A)=3.47e-9. In the details, it also includes additional lines.
 * `alpha_lyr_stis_011` is a special model from Bohlin which is a composite flux of a special Kurucz 9550K model from 900-1152A (Kurucz 2003), IUE data from 1152-1675A, STIS CCD fluxes from 1675-10200A (Bohlin & Gilliland 2004a), and the 9550K model longward of 10200A. It differs significantly in the uv-optical range by accounting for the new TMAP AND TLUSTY WD NLTE models (`Bohlin, Hubeny, Rauch (2020) <https://ui.adsabs.harvard.edu/abs/2020AJ....160...21B>`_) but corresponds to `alpha_mod_004` above 1 micron.