Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.304..315p&link_type=abstract
Astrophysics and Space Science, Volume 304, Issue 1-4, pp. 315-316
Astronomy and Astrophysics
Astrophysics
Accretion, Accretion Discs, Shock Waves, Stars: Individual, V347 Pup, Novalike, Cataclysmic Variables
Scientific paper
V347 Pup is the first novalike system with clear spiral arms in its accretion disc, as evidenced from its HeI Doppler maps. Combining the Doppler maps of the various lines of the system V347 Pup a more complex structure is revealed on the first arm. On the Doppler maps of HeI λ5875 emission line the first arm splits to two smaller and thinner structures. The Doppler map of HeI λ6678 emission line shows that this line dominates the region of thin structure with higher velocities that we met on the Doppler map of HeI λ5875 emission line. On the contrary the Hα emission line dominates the region of thin structure with lower velocities. We therefore observe, that the Hα emission line dominates on the exterior of the first arm, and the emission line of HeI on the interior. Most of NaI is probably emanated from the white dwarf or from the interior of the disc, and then being absorbed by the spiral shocks.
Harlaftis Emilios
Papadimitriou Christos
Steeghs Danny
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