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Title:
Reconstruction of the accretion disk in six cataclysmic variable stars
Authors:
Rutten, R. G. M.; van Paradijs, J.; Tinbergen, J.
Affiliation:
AA(Amsterdam Univ., Netherlands), AB(Amsterdam Univ., Netherlands), AC(Leiden Univ.; Kapteyn Observatory, Roden, Netherlands)
Publication:
Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 213-226. (A&A Homepage)
Publication Date:
07/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ACCRETION DISKS, CATACLYSMIC VARIABLES, LIGHT CURVE, MAXIMUM ENTROPY METHOD, ECLIPSING BINARY STARS, NOVAE
Bibliographic Code:
1992A&A...260..213R

Abstract

The maximum-entropy eclipse-mapping algorithm is used to reconstruct images of the accretion disks of the novalike variable stars RW Tri, UX UMa, SW Sex, LX Ser, V 1315 Aql, and V363 Aur. The 2D disk intensity maps deduced from the light curves reveal the size of the disk and its radial intensity dependence. Black-body temperature maps deduced from the intensity maps at different wavelengths show that the disks in RW Tri, UX UMa, and V363 Aur have a radial temperature dependence which closely matches the fundamental theoretical run of the effective temperature with radial distance from disk center: T(eff) varies as R exp -3/4. The system V1315 Aql and SW Sex exhibit a much flatter run of T(R) in the inner region of the disk, while LX Ser appears to hold a position in between these two extremes. The consequences of these results for accretion disk models are also discussed.

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