Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars

Details Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..601u&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Nov. 1979, p. 601-605.

Astronomy and Astrophysics

Astronomy

178

B Stars, Diameters, O Stars, Stellar Spectrophotometry, Stellar Structure, Stellar Temperature, Distance, Infrared Spectrophotometers, Main Sequence Stars, Radii, Supergiant Stars

Scientific paper

This paper discusses effective temperatures, angular diameters, distances, and linear diameters that have been determined for 160 O and B stars on the basis of published UV spectrophotometry, visible and near-IR intermediate-band photometry, and model-atmosphere fluxes. The results are compared with previous measurements and calculations for main-sequence and giant O and B stars. It is found that: (1) the flux effective temperatures of O and B supergiants are systematically lower than those of main-sequence and giant stars of the same subtype; (2) the effective temperatures and radii of Beta Cep stars are the same as those of nonvariable stars of the same spectral type; (3) Be stars that do not have two Balmer jumps have effective temperatures very similar to those of normal B stars of the same subtype; (4) O and B stars increase in size from the main sequence to supergiants; and (5) late B supergiants are approximately twice as large as O9 supergiants.

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