Abstract
view Abstract Citations (11) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS An Interpretation of the Line Profile Variations in the IUE Spectrum of the Wolf-Rayet Binary gamma 2 Velorum Brandi, Estela ; Ferrer, Osvaldo E. ; Sahade, Jorge Abstract An analysis of the variable profiles of the high-temperature resonance lines of Si IV in the IUE spectrum of gamma(2) Vel has made it possible to describe these profiles as a superposition of two different profiles, namely, a P Cygni profile that remains practically stationary throughout the orbital cycle and an absorption profile that moves back and forth with phase. To these two profiles is added a very sharp, strong absorption that ought to arise in the layers of the extended gaseous envelope that merge with the interstellar medium. The absorption that moves back and forth during the system's orbital revolution has been interpreted as suggesting a stream going away from the system at an angle of some 110 deg from the direction of the radius vector joining the Wolf-Rayet star with its companion. Such a stream seems to project upon a dense concentration of matter that is located somewhere in the volume between the two stars and moves away at some -700 km/s, and should result from the collision of the winds from the two components. The high-temperature resonance lines of N V and C IV very likely behave similarly to Si IV. Publication: The Astrophysical Journal Pub Date: May 1989 DOI: 10.1086/167460 Bibcode: 1989ApJ...340.1091B Keywords: Binary Stars; Line Spectra; Stellar Spectra; Wolf-Rayet Stars; Absorption Spectra; Iue; Radial Velocity; Stellar Envelopes; Stellar Winds; Astrophysics full text sources ADS | data products SIMBAD (1) MAST (1) INES (1) Related Materials (1) Erratum: 1989ApJ...347..561B
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