Spiral Structure in IP Peg: Confronting Theory and Observations

Details Spiral Structure in IP Peg: Confronting Theory and Observations Spiral Structure in IP Peg: Confronting Theory and Observations

1998-07-23

arxiv.org/abs/astro-ph/9807239v2

Astronomy and Astrophysics

Astrophysics

4 pages, LaTeX with 2 ps figures using crckapb.sty. To appear in the Proceedings of Numerical Astrophysics 1998, Tokyo, Japan,

Scientific paper

The first convincing piece of evidence of spiral structure in the accretion disc in IP Pegasi was found by Steeghs et al. (1997). We performed two kinds of 2D hydrodynamic simulations, a SFS finite volume scheme and a SPH scheme, with a mass ratio of 0.5. Both results agreed well with each other. We constructed Doppler maps and line flux-binary phase relations based on density distributions, the results agreeing well with those obtained by observation.

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