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

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

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...334.1021s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 334, Nov. 15, 1988, p. 1021-1037. Previously announced in STAR as N88-24563

Astronomy and Astrophysics

Astrophysics

73

Binary Stars, Collisions, Cygnus Constellation, Eclipses, Stellar Winds, Wolf-Rayet Stars, Carbon, Helium, High Resolution, Line Spectra, Nitrogen, O Stars

Scientific paper

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.

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