Colliding stellar winds in the eclipsing Wolf-Rayet binary V444 Cygni

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166894· OSTI ID:6535190

Shore, S N; Brown, D N

High resolution spectra of V444 Cygni have been obtained using the International Ultraviolet Explorer Satellite. These spectra span both eclipses and include one observation at third quadrature. Together with seven archival spectra, they provide reasonably complete phase coverage for the system. The variations in the P Cygni profiles of the He(II) and N(IV) lines, imply the existence of a low density region in the WR wind. This region occupies a relatively narrow range of orbital phase coinciding with the highest terminal velocities observed in C IV. These data are interpreted to be evidence of an interaction region separating the winds of the O-star and Wolf-Rayet star. 51 references.

• Research Organization: New Mexico Institute of Mining and Technology, Socorro (USA); Meudon Observatoire (France); Washington Univ., Seattle (USA)
• OSTI ID: 6535190
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 334; 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
CARBON
COLLISIONS
ECLIPSE
ELEMENTS
FLUIDS
GASES
HELIUM
MAIN SEQUENCE STARS
NITROGEN
NONMETALS
RARE GASES
SATELLITES
STARS
STELLAR ACTIVITY
STELLAR WINDS
VARIATIONS
WOLF-RAYET STARS