HST spectral mapping of V2051 Ophiuchi in a low state
Abstract
V2051 Oph is an eclipsing dwarf novae with an orbital period of 90 min. This system belongs to a small group of ultrashort period eclipsing dwarf nova together with Z Cha, OY Car and HT Cas. We report a study of the spectra and structure of the accretion disc of the V2051 Oph while the star was in an unusual, faint brightness state during 1996. The analysis is based on high-speed ultraviolet and optical spectroscopy secured with the Hubble Space Telescope.
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