Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.306..217k&link_type=abstract
Astrophysics and Space Science, Volume 306, Issue 4, pp.217-229
Astronomy and Astrophysics
Astrophysics
2
Stars: Binaries Close, Binaries: Eclipsing, Binaries: Cataclysmic Variables, Stars: Individual: Ux Uma, Stars
Scientific paper
UBVRI photometry and spectroscopic observations around the Hα line of the cataclysmic star UX UMa are presented. The analysis of the 9-year photometry shows that the out-of-eclipse brightness of the system and the depth of the eclipse changes in different time scales while the width of the eclipse remains constant. The observed features of the light curves as well as the features of the two-peaked Hα profiles were attributed to an inhomogeneity of the accretion disk. “Spiral arm” model for a fitting of the light curves of UX UMa is proposed. It reproduces well the observational data. The obtained azimuthal extent of the spiral arms is of ˜90° and their light contribution is about 17 30of the total V flux of the disk. The obtained two dense structures at the outer disk covering partially the inner hot disk and the white dwarf at orbital phases ˜0.7 and ˜0.2 is in agreement with the predictions of the theoretical computations.
Djurasevic Gojko
Khruzina Tatiana
Kjurkchieva Diana
Marchev Dragomir
No associations
LandOfFree
Photometric and Hα Observations of the Cataclysmic Star UX UMa does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Photometric and Hα Observations of the Cataclysmic Star UX UMa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric and Hα Observations of the Cataclysmic Star UX UMa will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1239273