The angular diameter of Betelgeuse

Details The angular diameter of Betelgeuse The angular diameter of Betelgeuse

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...115..253b&link_type=abstract

Astronomy and Astrophysics, vol. 115, no. 2, Nov. 1982, p. 253-256.

Astronomy and Astrophysics

Astrophysics

22

Astrometry, Stellar Atmospheres, Stellar Magnitude, Angular Resolution, Interferometry, Reference Atmospheres, Stellar Structure, Titanium Oxides

Scientific paper

Measurements of the diameter of Betelgeuse from use of Labeyrie's speckle interferometer attached to the 6-m Soviet telescope and the 3.6-m ESO telescope are reported. The TiO related diameter variations evidenced are not consistent with the effective temperature of 3900 K proposed by Tsuji (1976) from model fitting to the observed energy distribution; this discrepancy is discussed. No other variation of diameter, either with wavelength or with time is meaningful within the range of errors.

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