The hot-spot environment of SW Sex in a low state

Details The hot-spot environment of SW Sex in a low state The hot-spot environment of SW Sex in a low state

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000newar..44..137g&link_type=abstract

New Astronomy Reviews, Volume 44, Issue 1-2, p. 137-142.

Astronomy and Astrophysics

Astronomy

5

Scientific paper

Based on observations obtained with the 2.5m Isaac Newton Telescope we show that the characteristics of the SW Sex stars can be explained by the dominance of a `hot-spot' like feature in the accretion disk. In SW Sex this `hot-spot' region is located at a distance of 0.5RL1 from the white-dwarf and is best visible at phase /ϕ=0.95. The location of the hot-spot as deduced from spectral eclipse mapping coincides with the formation site of the main emission lines. We deduce that this hot-spot region is formed by a shock, which we speculate to be the consequence of a high mass-transfer rate and a long spin-period of the non-magnetic white dwarf.

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