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| Paper: |
FUSE Observations of the Dwarf Nova EM Cygni |
| Volume: |
330, The Astrophysics of Cataclysmic Variables and Related Objects |
| Page: |
351 |
| Authors: |
Welsh, W.F.; Froning, C.S.; Marsh, T.R.; Robinson, E.L.; Wood, J.H. |
| Abstract: |
FUSE observations of the eclipsing, double-lined dwarf nova EM Cygni reveal a complex spectrum, exhibiting the usual C III and O VI lines plus a host of unidentified absorption and emission features. Our initial attempts at fitting the continuum with a white dwarf plus accretion disk model only crudely match the observations and thus only provide a rough estimate of the mass-accretion rate and the white dwarf temperature. Using the observed FUV lines we measure the orbital velocity of the white dwarf finding K1 ~131 km/s, allowing us to revise the system parameters. Most notably, we find a mass ratio q=0.65, much lower than previous estimates. |
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