Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.210p..33w&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 210, Oct. 1, 1984, p. 33P-36P.
Astronomy and Astrophysics
Astronomy
1
B Stars, Companion Stars, Late Stars, Stellar Spectrophotometry, Subdwarf Stars, Far Ultraviolet Radiation, H Beta Line, Stellar Magnitude, Stellar Temperature
Scientific paper
Two bright late B stars observed by the S2/68 package on TD1A have been observed with ubvyH-beta photometry. They appear to have hot faint companions that produce a steeply increasing flux in the far UV. Separation of the flux distributions indicates that the companions have temperatures of about 100,000 K, radii of (0.04 + or - 0.01) and (0.4 + or - 0.2) solar radius, and luminosities of (2.2 + or - 0.2) and (3.9 + or - 0.6) solar luminosities, respectively. These luminosities and temperatures lie between values typical of planetary nebula nuclei and white dwarfs. The stars fall close to the evolutionary path in the L, Te diagram predicted by Seaton (1966).
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