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Roche Tomography of the Cool Star in IP Peg

Published online by Cambridge University Press:  12 April 2016

R. G. M. Rutten  and
V. S. Dhillon
R. G. M. Rutten
Affiliation:
Netherlands Foundation for Research in Astronomy Royal Greenwich Observatory, La Palma, Spain
V. S. Dhillon
Affiliation:
Royal Greenwich Observatory, La Palma, Spain

Abstract

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We analyse orbitally-resolved spectra of the Na I doublet in the dwarf nova IP Peg, using the newly developed technique of Roche tomography. We show that Roche tomography can be successfully employed to image the secondary stars in CVs, and that it also serves as an independent aid for determining binary system parameters. Our preliminary results suggest that the mass of the white-dwarf primary is 1.2 M⊙, significantly higher than previous estimates.

Type
Non-Magnetic Cataclysmic Variables
Information
International Astronomical Union Colloquium , Volume 158: Cataclysmic Variables and Related Objects , 1996 , pp. 21 - 24
Copyright
Copyright © Kluwer 1996

References

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