Multiwavelength monitoring of the dwarf nova VW Hydri. III - IUE observations

Details Multiwavelength monitoring of the dwarf nova VW Hydri. III - IUE observations Multiwavelength monitoring of the dwarf nova VW Hydri. III - IUE observations

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.225..113v&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 225, March 1, 1987, p. 113-130.

Astronomy and Astrophysics

Astronomy

57

Binary Stars, Dwarf Novae, Spaceborne Astronomy, Stellar Spectra, Ultraviolet Astronomy, Carbon, Iue, Line Spectra, Radiant Flux Density, Spectral Resolution

Scientific paper

IUE observations of VW Hyi were obtained between September and November 1984 during three ordinary outbursts, one superoutburst, and quiescence. Progressive fall in UV fluxes is noted during quiescence, and the UV flux lags behind the optical flux during the rise to outburst peak. Initially in the superoutburst, the fluxes rise to the level of an ordinary maximum, and subsequently, the fluxes at the short wavelengths decline significantly before rising to the superoutburst maximum. Hours variability in the flux variations is noted during both quiescence and superoutburst. High-resolution spectra of the superoutburst maximum show a blueshift of 400 km/s in the centers of the UV resonance lines.

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