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

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6725850

Brown, D N; Shore, S 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.

• Research Organization: Washington Univ., Seattle (USA)
• OSTI ID: 6725850
• Report Number(s): N-88-24563; NASA-CR-182937; NAS-1.26:182937
• 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
ABSORPTION SPECTRA
BINARY STARS
CARBON
COLLISIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM
INFORMATION
MAIN SEQUENCE STARS
NITROGEN
NONMETALS
NUMERICAL DATA
RARE GASES
SPECTRA
STARS
STELLAR ACTIVITY
STELLAR WINDS
WOLF-RAYET STARS