Zeta Puppis - an O-type oblique rotator

Details Zeta Puppis - an O-type oblique rotator Zeta Puppis - an O-type oblique rotator

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...251..133m&link_type=abstract

Astrophysical Journal, Part 1, vol. 251, Dec. 1, 1981, p. 133-138. Research supported by the Natural Sciences and Engineering R

Astronomy and Astrophysics

Astrophysics

35

Magnetic Stars, O Stars, Stellar Rotation, Stellar Spectrophotometry, Stellar Winds, A Stars, H Alpha Line, High Resolution, Line Shape, Magnetic Field Configurations, Magnetic Poles, Multipolar Fields, Photosphere, Plasma Diagnostics, Wind Velocity Measurement

Scientific paper

Periodic variability has been found by means of spectrophotometric observations in the depth of the nearly central absorption reversal of the P Cygni-type H-alpha profile from the O4ef star, Zeta Puppis. The 5.075-day period derived implies that the H-alpha-forming part of the stellar wind corrotates with the photosphere, with a rotation period of about 4.8 days. The suggestion that the periodic variations are due to a rotating magnetic multipole, as observed in Ap stars, may be tested by further high-resolution measurements of radial velocity or polarization variations of the absorbing matter.

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