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Table 3

Determined frequencies and suggested spherical degree l of the corresponding pulsation mode.

SBL98 Type f 1 l 1 f 2 l 2 f 3 l 3 f 4 f 5 f 6 A V, f 1 Comment
ID (d-1) (d-1) (d-1) (d-1) (d-1) (d-1) (mmag)

164 SPB 1.4183 3 19.5 new
210 SPB 0.9615 2 0.8332 0.5004 1.9223 28.4 f4 = 2f1, new
226 β Cephei 0.7017 14.9098 2.4242 2.6579 17.2502 7.5 hybrid?
268 β Cephei 8.3847 12.9891 7.2748 4.7
275 SPB 1.6686 1.7662 0.9093 2.0437 13.0
283 SPB 1.6694 1 0.249 1.4688 2.9952 11.3 new
303 β Cephei 10.1225 10.991 10.5106 4 11.6904 12.045 11.902 11.1
317 SPB 0.6133 1.3381 3.4903 4.9252 7.9 new
437 β Cephei 7.461 2.0 candidate
456 β Cephei 12.6701 2.0 candidate
461 SPB 0.3597 1 4.4
480 SPB 2.2981 4.5224 4.2 new, candidate
482 SPB 1.9461 1.3466 1,3 7.4 new
486 β Cephei 11.3791 13.8258 18.058 (0.38) 2.1
515 β Cephei 3.5221 5.162 4.0 candidate
528 SPB 1.1959 0.8962 1.3335 12.7 new
653 β Cephei 9.2647 0 13.334 4.5
712 β Cephei 9.8481 9.2947 5.7

306 δ Scuti 23.7713 9.4853 20.3195 9.7797 10.5421 8.9
455 δ Scuti 23.7651 19.8906 20.869 18.4495 10.0
464 SPB 1.1001 1.3389 4.7 new

444 δ Scuti 15.0539 20.8483 17.9737 23.0557 2.3 new
612 δ Scuti 11.1654 10.7018 10.4427 9.2525 11.5
752 δ Scuti 15.2413 15.3989 17.1006 15.0161 18.7892 2.7 new

Notes. Only stars where frequency analysis resulted in at least one significant signal are listed. The frequencies are sorted by decreasing S/N and all possible pulsation modes according to our analysis are listed. The AV,f1 column lists the amplitude of the frequency in the V band with largest S/N, i.e. f1. The first horizontal line in the list separates the confirmed members of NGC 6231 (above) from possible member stars and targets below the second horizontal line represent non-members. Typical errors are of the order of a few 10-4d-1 for the frequencies and about 0.2mmag for the V band amplitude. More detailed error estimates will be given in Appendix A where each star is discussed individually.

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