The mean angular diameter of δ Cephei measured by optical long-baseline interferometry.

Details The mean angular diameter of δ Cephei measured by optical long-baseline interferometry. The mean angular diameter of δ Cephei measured by optical long-baseline interferometry.

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...317..789m&link_type=abstract

Astronomy and Astrophysics, v.317, p.789-792

Astronomy and Astrophysics

Astrophysics

37

Stars: Cepheids, Stars: Individual: {Delta} Cep, Techniques: Interferometric, Stars: Fundamental Parameters

Scientific paper

Long baseline interferometric observations of δ Cep at the "Grand Interferometre a deux Telescopes" 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 are marginally detected and the measured amplitude is consistent with the theoretical predictions.

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