Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...368..588u&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 368, Feb. 20, 1991, p. 588-598. Research supported by NSERC.
Astronomy and Astrophysics
Astrophysics
19
Binary Stars, Neutron Stars, Stellar Rotation, Wolf-Rayet Stars, Abundance, Emission Spectra, Radial Velocity, Stellar Spectra, Stellar Winds
Scientific paper
Twelve 40 A/mm blue-violet spectrograms of HD 50896 taken over 199 cycles in 1980 and 1982 were measured for radial velocity, and profiles of the major lines are presented. Binary motion about a collapsed companion in a period of 3.763 days is not demonstrated. It is argued that what is being seen is inflow from a disk in the case of the He lines and outflow in a wind in the case of the N IV and N V lines, with the shapes of the line profiles changing systematically in a period of 3.763 days. HD 50896 appears to be a single star which lies within a ringlike, rotating disk which is connected to the central star by a few ever-changing filaments which are supported by magnetic field lines.
Underhill Anne. B.
Yang Stephenson
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