Image Details
Caption: Figure 15.
The first and third panels show models and observed spectra and photometry of two massive stars in Sextans A (LGN s003 and s004). The observed COS spectra are shown in magenta, while the WFC3 and V-band photometry are shown as red and green circles, respectively. The black and dark-red curves indicate the original stellar + dust model derived from the WFC3 photometry alone, for the LMC average and SMC Bar extinction curves, respectively. The blue curve corresponds to the best fit to the combined COS spectra and WFC3 photometry. For each model spectrum, the parameters of the model are indicated in the legend. The second and fourth panels show fractional residuals between the observations (COS and WFC3) and the models, with the black and blue points and lines corresponding to the initial model (WFC3 photometry only) and best-fit to COS + WFC3, respectively.
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