The FUSE spectrum of the DN EK TrA in quiescence is modeled with a WD. The effect of the Hydrogen quasimolecular opacity has to be included to agree with the flux around 1060-1080A. The theoretical spectrum without the inclusion of the H quasimolecular absorption is shown with a dashed line in that region (1060-1080A). All the sharp emission lines (including the nitrogen lines) are due to airglow. The broad lines of C iii (977 & 1175) and O vi are from the source. In the longer wavelengths of FUSE the theoretical and observed spectra match each other in some regions but not everywhere. For example the S iv has an observed flux lower than modeled at 1123A, while at the bottom of the broad absorption feature at 1128A there is a small sharp emission feature most probably due to the low S/N. These lines are identified by their location and the by the overall shape of the continuum in their immediate neighborhood. The spectrum is a combination of two FUSE spectra, and has been dereddened assuming the published value E(B-V)=0.03. Details of the modeling are given in Godon et al. (2008).

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FUSE Data

Synthetic Spectrum

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These data and models were published in the paper:

Godon, P., Sion, E.M., Barrett, P.E., Hubeny, I., Linnell, A.P., Szkody, P. 2008, ApJ, 679, 1447

Notes on figures:

When a model is shown, the portions of the observed spectrum that have been masked before the spectral fit are in blue, while the rest of the observed spectrum is in red. The model fit is shown the solide line in black (or possibly white). If the model is a composite made of a disk model and a white dwarf model, then these are shown with the dashed- and dotted lines (respectively). Some models include the effect of quasi-molecular HI absorption features, these are labelled "Q-mol" in the spectrum.