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| Paper: |
FUSE Spectroscopy of the Transitional Magnetic Cataclysmic Variable V405 Aurigae |
| Volume: |
348, Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE |
| Page: |
272 |
| Authors: |
Sing, D.K.; Howell, S.B.; Szkody, P.; Cordova, F.A. |
| Abstract: |
We present Far Ultraviolet Spectroscopic Explorer observations of the magnetic cataclysmic variable V405 Aurigae. Together with four other DQ Her type binaries, V405 Aur forms a small subclass of intermediate polars which are likely to evolve into low magnetic field strength polars, similar to AM Her. Our co-added FUSE spectrum exhibits broad O VI and C III emission-lines as well as a narrow O VI emission-line component which likely forms near the white dwarf surface. The O VI λ1032/λ1038 narrow emission line flux ratio is near 2.0 throughout the orbit, indicative of its formation in an optically thin gas. Radial velocity measurements of the narrow O VI emission-lines restrict any orbital modulation to a very low amplitude (Kwd =2.5 ± 0.5 km s−1) indicating, along with other single peaked broad disk emission lines in the UV and optical, that the binary system is at low inclination. |
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