The BP and AP stars in the Scorpius-Centaurus moving cluster

Details The BP and AP stars in the Scorpius-Centaurus moving cluster The BP and AP stars in the Scorpius-Centaurus moving cluster

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981sval....7..203k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 7, June 1981, p. 366-371.) Soviet Astronomy Letters, vol. 7, May-June 1981, p. 203-206.

Astronomy and Astrophysics

Astronomy

11

A Stars, B Stars, Peculiar Stars, Star Clusters, Stellar Motions, Hertzsprung-Russell Diagram, Stellar Evolution, Stellar Magnitude

Scientific paper

One hundred and seventy stars in the northeastern part of the Scorpius-Centaurus moving cluster are investigated. The proportion of the 34 type Bp and Ap stars observed in the cluster varies by a factor of 3-4, while age ranges from 4-12 x 10 to the 6th yr, and mean distance is 120-145 pc. Almost all the Bp and Ap stars display attenuated He I lines, and in half the stars the 4481 Mg II line is weakened by a factor of 1.5 to 2. Spectral parameters and several types of peculiarity are determined.

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