Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...260..213r&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 213-226.
Astronomy and Astrophysics
Astrophysics
142
Accretion Disks, Cataclysmic Variables, Light Curve, Maximum Entropy Method, Eclipsing Binary Stars, Novae
Scientific paper
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.
Paradijs Jan van
Rutten Rene G. M.
Tinbergen Jaap
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