Quasi-periodic light-curve fluctuations of the dwarf nova SS AUR at quiescence

Details Quasi-periodic light-curve fluctuations of the dwarf nova SS AUR at quiescence Quasi-periodic light-curve fluctuations of the dwarf nova SS AUR at quiescence

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987afz....27..231t&link_type=abstract

Astrofizika (ISSN 0571-7132), vol. 27, Oct. 1987, p. 231-236. In Russian.

Astronomy and Astrophysics

Astronomy

3

Astronomical Photometry, Dwarf Novae, Electrophotometry, Light Curve, Stellar Oscillations, Amplitudes, Power Spectra, Shock Fronts, Ubv Spectra

Scientific paper

The results of UBVRI photoelectric observations of dwarf nova SS Aur are presented. It has been shown that there are quasi-periodic variations in the light curve of the order of 20 - 30 minutes at quiescence. These variations had significant amplitudes at shorter wavelengths. At U and B bands the amplitudes of variations have been ⪆0m.5 and did not depend on the general luminosity of the system. It has been suggested that disk instability or shock waves at hot spots are responsible for the observed quasi-periodic light variations.

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