Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....96..174m&link_type=abstract
Astronomy and Astrophysics, vol. 96, no. 1-2, Mar. 1981, p. 174-180. Deutsche Forschungsgemeinschaft
Astronomy and Astrophysics
Astrophysics
9
A Stars, Magnetic Stars, Open Clusters, Stellar Spectra, Stellar Spectrophotometry, Error Analysis, Radial Velocity, Stellar Motions, Ubv Spectra
Scientific paper
A photometric study of 27 blue stragglers in 9 open clusters is presented. Besides uvby data fluxes in Maitzen's (1976) g1 and g2 passbands where g2 is centered in the 5200 A flux depression of Ap stars are obtained. The investigated clusters are older than 10 to the eighth years. Their blue stragglers show (b-y)zero values in the spectral range between B 3 and F 0, the typical region of peculiar A-type stars. The percentage of stars with 5200 A peculiarity among the blue stragglers turned out to be 8.3%. Another 15% of the investigated stars show mild photometric peculiarity. The value of definite peculiar stars agrees with the percentage of Ap stars of the same spectral class range in open clusters of similar age (greater than 10 to the eighth years) and in the Galactic field.
Maitzen Hans Michael
Seggewiss Wilhelm
Tueg H.
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