Angular diameters, radii, and effective temperatures of AP stars

Details Angular diameters, radii, and effective temperatures of AP stars Angular diameters, radii, and effective temperatures of AP stars

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....79...48s&link_type=abstract

Astronomy and Astrophysics, vol. 79, no. 1-2, Oct. 1979, p. 48-55.

Astronomy and Astrophysics

Astronomy

47

A Stars, Astrometry, Infrared Astronomy, Stellar Temperature, Atmospheric Models, Diameters, Parallax, Radii, Stellar Spectra

Scientific paper

The angular diameters and effective temperatures of five Ap stars are obtained using the infra-red flux method of Blackwell and Shallis (1977), described more fully by Blackwell et al. (1979). It is confirmed that previous estimates of effective temperature for these are too high and that the new temperatures are generally similar to those found for main sequence stars of the same spectral type. The spectral classification of Ap stars is discussed in relation to these new temperatures. Angular diameters are converted to stellar radii using measured parallaxes. Despite large uncertainties in the distance scale, the deduced radii are significantly greater than for main sequence A type stars.

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