1999/01/28 by C. Hellier, Coel Hellier · 1 citation
Physics and Astronomy · #Astro and Planetary Science #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/307345
To appear in ApJ Supp, 1999, LaTeX, 7 figures also at http://www.astro.keele.ac.uk/~ch/publist.html
arxiv created 1999/01/28 · openalex publication_date 1999/07/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
I collect emission-line profiles for seven intermediate polars, phase-resolved over the spin cycles. I then present the first systematic application of Doppler tomography to the spin cycles, with the aim of investigating whether spin-cycle tomography is a useful diagnostic tool. Four stars show line emission from material falling onto both magnetic poles of the white dwarf, but three others show line emission from only the upper pole. Tomography can map the extent and shape of the line-emitting accretion curtains, but it can also give misleading results if the line flux changes significantly over the spin cycle.