The mean angular diameter of δCephei measured by optical long-baseline interferometry
نویسندگان
چکیده
Long baseline interferometric observations of δ Cep at the ”Grand Interféromètre à deux Télescopes” give the first measurement of its mean angular diameter. Combined with the mean linear radius deduced from spectroscopic data, the mean angular diameter gives an improved distance determination for δ Cep. Size pulsations aremarginally detected and themeasured amplitude is consistent with the theoretical predictions.
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