Open AccessConfirmation of the oblique pulsator model for the rapidly oscillating Ap star HR 3831
Author(s) -
Baldry I. K.,
Kurtz D. W.,
Bedding T. R.
Publication year - 1998
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1998.00039.x
Subject(s) - physics , astrophysics , amplitude , radial velocity , oblique case , photometry (optics) , stars , asteroseismology , astronomy , phase (matter) , light curve , starspot , optics , quantum mechanics , linguistics , philosophy
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.