Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars.
Abstract
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.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- November 1979
- DOI:
- 10.1093/mnras/189.3.601
- Bibcode:
- 1979MNRAS.189..601U
- Keywords:
-
- B Stars;
- Diameters;
- O Stars;
- Stellar Spectrophotometry;
- Stellar Structure;
- Stellar Temperature;
- Distance;
- Infrared Spectrophotometers;
- Main Sequence Stars;
- Radii;
- Supergiant Stars;
- Astronomy;
- Angular Diameters:Early-Type Stars;
- Diameters:Early-Type Stars;
- Distances:Early-Type Stars;
- Early-Type Stars:Effective Temperatures