UVBY beta photometry of peculiar B and A stars, discovered at Abastumani

Details UVBY beta photometry of peculiar B and A stars, discovered at Abastumani UVBY beta photometry of peculiar B and A stars, discovered at Abastumani

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...77..333a&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 77, no. 2, Feb. 1989, p. 333-338.

Astronomy and Astrophysics

Astrophysics

3

A Stars, Astronomical Photometry, B Stars, Peculiar Stars, Stellar Composition, Ubv Spectra, Dwarf Stars, H Beta Line, Magnetic Stars, Metallicity

Scientific paper

Stromgren uvby photometry for 70 peculiar Bp, Ap, or Am type stars is presented. The model grid of Relyea and Kurucz (1978) is used to obtain effective temperatures and log g values, confirming the dwarf-nature of Am stars. Good agreement is found between effective temperatures and equivalent spectral classes derived from the (b-y)0 values, although the A4-A5 stars in this sample may be cooler than normal stars of luminosity-class III-V in this spectral range.

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