Journal Article

Confirmation of the oblique pulsator model for the rapidly oscillating Ap star HR 3831

I. K. Baldry, D. W. Kurtz and T. R. Bedding

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 300, issue 4, pages L39-L42
Published in print November 1998 | ISSN: 0035-8711
Published online November 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1046/j.1365-8711.1998.00039.x
Confirmation of the oblique pulsator model for the rapidly oscillating Ap star HR 3831

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We have detected pulsational radial velocity variations in the rapidly oscillating Ap star HR 3831 which are amplitude- and phase-modulated in the same manner as the photometric variations. In particular, the radial velocities show the same 180° phase reversal at magnetic quadrature as the photometric variations. This confirms the oblique pulsator model, and rules out the spotted pulsator model for these stars.

Keywords: stars: chemically peculiar; stars: individual: HR 3831; stars: oscillations; stars: variables: other

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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