The helium-strong star HD96446 - A rapid rotator and possible pulsator?

Details The helium-strong star HD96446 - A rapid rotator and possible pulsator? The helium-strong star HD96446 - A rapid rotator and possible pulsator?

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...243..148m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 1, March 1991, p. 148-154. NSERC-supported research.

Astronomy and Astrophysics

Astrophysics

18

B Stars, Magnetic Stars, Stellar Oscillations, Ubv Spectra, Variable Stars, Astronomical Photometry, Iue, Periodic Variations, Stellar Rotation

Scientific paper

Photometric variability in the He-strong star HD96446 has been detected. Fourier analysis of 10 nights of observations spanning three years from two observatories shows a period close to 0.85 d. This is interpreted as the star's rotation period, since it is compatible with time scales of rotation inferred for other He-strong variables and is consistent with all the available magnetic measurements of HD96446. The photometric residuals show evidence for more rapid variability with a period near 6.2 h, which remained coherent during three years.

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