UX Ursae Majoris as a SW Sex star

Details UX Ursae Majoris as a SW Sex star UX Ursae Majoris as a SW Sex star

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1273..338n&link_type=abstract

17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 338-341 (2010).

Astronomy and Astrophysics

Astronomy

Binary Stars, Astronomical Spectra, Astronomical Ephemerides, X-Ray Binaries, Spectroscopy And Spectrophotometry, Ephemerides, Almanacs, And Calendars

Scientific paper

We present an analysis of time-resolved, medium resolution optical spectroscopic observations of UX UMa in the blue (3920-5250 A˚) and red (6100-7200 A˚) wavelength ranges in April 1999 and March 2008, respectively. UX UMa has been in different states during those observations. Doppler tomography method was used to accretion disc structure investigation in both states. During the observations in 1999, UX UMa showed many of the defining properties of the SW Sex stars. However, all these features almost completely disappeared in 2008. We have also estimated the radial velocity semi-amplitude K1.

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