EXOSAT observations of V471 Tauri - a 9. 25 minute white dwarf pulsation and orbital phase dependent X-ray dips

Journal Article · Wed Oct 01 00:00:00 EDT 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/184754· OSTI ID:6635883

Jensen, K A; Swank, J H; Petre, P; Guinan, E F; Sion, E M

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. 25 references.

• Research Organization: NASA, Goddard Space Flight Center, Greenbelt, MD; Navy, E. O. Hulburt Center for Space Research, Washington, DC; Villanova Univ., PA
• OSTI ID: 6635883
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 309; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
DWARF STARS
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
MATHEMATICAL MODELS
ORBITS
RADIATIONS
SOFT X RADIATION
STAR MODELS
STARS
WHITE DWARF STARS
X RADIATION