Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aca....44..257s&link_type=abstract
Acta Astronomica, v.44, pp.257-263, (1994).
Astronomy and Astrophysics
Astronomy
6
Binaries: Eclipsing, Novae: Cataclysmic Variables, Stars: Individual: Ux Uma
Scientific paper
The moderately peculiar light curves of UX UMa, showing an ill defined orbital hump of a small amplitude are analyzed by assuming a simple formula for the phase dependence of the absorption produced by "circumdisk" material. The reconstructed spot light curves are well defined, including the shape of the hump, the ingress part of the eclipse, and the flat part during its totality. Consequently, the ingress phases phi_1 and phi_2 and the resulting disk light curves, although not as reliable as in the case of standard light curves, can be used in the eclipse analysis. The egress, however, is rather poorly defined. This is likely a consequence of an excess absorption due to an oblique viewing of the spot at those phases. Similar analysis performed for the standard light curves shows that in their case the absorption effects are absent.
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