Fig. 17.
Upper panel: linear least-squares fit to the 7 periods of NGC 6905 marked with an asterisk in Table 11. The derived period spacing from this fit is Δ Π = 11.9693 ± 0.0988 s. Lower panel: residuals of the period distribution relative to the dipole mean period spacing. Modes with consecutive radial order are connected with a thin black line.
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