Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...154..197w&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 154, no. 1-2, Jan. 1986, p. 197-213.
Astronomy and Astrophysics
Astrophysics
40
Dwarf Novae, Eclipsing Binary Stars, Stellar Mass Accretion, Stellar Spectrophotometry, Ultraviolet Spectra, Visible Spectrum, Balmer Series, Light Curve, Spectral Resolution, Stellar Mass, Temporal Resolution
Scientific paper
A detailed phase-dependent spectroscopic study of the eclipsing dwarf nova V2051 Oph is reported. The spectroscopic observations were carried out in the optical and UV wavelengths using the 3.9-meter Anglo-Australian Telescope (AAT) International Ultraviolet Explorer (IUE) spacecraft. The optical spectrum shows strong Balmer emission, as well as weak He II emission at 4686 A, and intermediate-strength He I emission at 4471 A. The UV spectrum is similar to that of a dwarf nova in a quiescent state with strong C IV emission. Evidence of asymmetry in the accretion disk is presented, and a solution for the system dynamics is obtained. The observational data are compared to a Keplerian model of disk consisting of 180 azimuthal and 50 equally spaced radial elements. Using the A table summarizing the system parameters of V2051 Oph is provided.
Bailey Jeremy
Carty T.
Greenhill John G.
Hill Philip W.
McCowage Chris
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