D. Barthes et al., ARE LOW-ORDER RESONANCES OBSERVED IN MIRA PULSATION (VOL 334, PG L1, 1998), Astronomy and astrophysics (Berlin), 337(2), 1998, pp. 650
The possibility of a low-order, two-mode resonance in the pulsation of
LPVs is investigated by means of Fourier analysis of lightcurves, sup
plemented by spectral types and by kinematic population analysis based
on HIPPARCOS astrometric data. The question might be positively answe
red.