XMM-Newton Proposal 02032601

Details XMM-Newton Proposal 02032601 XMM-Newton Proposal 02032601

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..172h&link_type=abstract

XMM-Newton Proposal ID #02032601

Physics

V471 Tauri, Xmm-Newton Proposal 02032601

Scientific paper

We plan to observe V471 Tau,an eclipsing 12.5h period precontact cataclysmic binary in order to study evidence for accretion via stellar wind from the active K2V secondary. HST UV spectra have established that the white dwarf surface shows inhomogenities of silicon, which could be due to magnetically funnelled accretion In this programme we plan to study the spin phase resolved X-ray spectrum of the WD together with simultaneous X-ray & UV spin lightcurves in order to model the variation and thus check the stellar wind accretion hypothesis. The eclipsing nature of the system allows us to fully separate X-ray emission from the WD and the K star. This enables us to model emission from each source separately and provides extra constraints on the location of the WD magnetic poles.

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