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Table 8

Fundamental and first-overtone pulsation periods and the period ratio for the double-mode RRL detected in M 68.

# P1 [d] A1 P0 [d] A0 P1/P0 ℳ/ℳ

V3 0.3907346 0.206 0.523746 0.101 0.7460 0.789 ± 0.119
V4 0.3962175 0.205 0.530818 0.111 0.7464 0.787 ± 0.118
V7 0.3879608 0.201 0.520186 0.107 0.7458 0.789 ± 0.119
V8 0.3904076 0.219 0.522230 0.046 0.7476 0.784 ± 0.118
V19 0.3916309 0.202 0.525259 0.061 0.7456 0.790 ± 0.119
V21 0.4071121 0.221 0.545757 0.138 0.7460 0.789 ± 0.119
V26 0.4070332 0.200 0.546782 0.147 0.7444 0.793 ± 0.120
V29 0.3952413 0.236 0.530525 0.023 0.7450 0.792 ± 0.119
V31 0.3996599 0.200 0.535115 0.121 0.7469 0.786 ± 0.118
V34 0.4001371 0.187 0.537097 0.050 0.7450 0.792 ± 0.119
V36 0.415346 0.203 0.557511 0.106 0.7450 0.792 ± 0.119
V45 0.3908187 0.224

Notes. Also listed are semi-amplitudes for each pulsation mode.

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