Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...309l..27j&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 309, Oct. 1, 1986, p. L27-L31.
Astronomy and Astrophysics
Astronomy
70
Eclipsing Binary Stars, Spaceborne Astronomy, Stellar Orbits, Stellar Oscillations, White Dwarf Stars, X Ray Binaries, Exosat Satellite, K Stars, Stellar Models
Scientific paper
New results obtained from a 28 hr continuous observation of V471 Tauri with the EXOSAT satellite are reported. The detection of soft X-ray fluxes from both the white dwarf and the K dwarf, the discovery of a 9.25 minute pulsation from the white dwarf, and the discovery of orbital phase-related soft X-ray dips are discussed. The dips may be correlated with the triangular Lagrangian points of the binary orbit. The X-ray flux from the white dwarf is consistent with thermal models for a white dwarf photosphere with T(eff) of about 35,000 K, log g = 8.0-8.5, and log N(H) = 18.65 + or - 0.2.
Guinan Edward F.
Jensen Keld A.
Petre Rob
Shipman Harry L.
Sion Edward M.
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