Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...255..585m&link_type=abstract
Astrophysical Journal, Part 1, vol. 255, Apr. 15, 1982, p. 585-595. Research sponsored by the U.S. Department of Energy.
Astronomy and Astrophysics
Astrophysics
24
Bursts, Color, Dwarf Novae, Pulsed Radiation, Stellar Oscillations, Stellar Radiation, Binary Stars, Black Body Radiation, Flicker, Stellar Luminosity, Stellar Models, Stellar Spectra, Stellar Spectrophotometry, Stellar Temperature, Time Series Analysis, White Dwarf Stars
Scientific paper
The spectra of the short period (about 30 s) oscillations and flickering of the dwarf nova SY Cnc have been determined by simultaneously measuring the optical flux in three broad, contiguous spectral bands during an optical outburst of the star. The spectrum of the oscillations rises too rapidly toward short wavelengths to be consistent with any simple thermal model. The colors of the flickering are even more extreme (i.e., more ultraviolet) than those of the pulsations. No timing differences were detected to a fraction of a second between the ultraviolet (U), cyan (B+V, or C) and red (R, to 9000 A) bands of the pulsations; thus, the optical oscillations appear to arise from a single physical location in the binary system.
Cordova France A.
Middleditch John
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