Velocities of rotation of chemically peculiar stars

Details Velocities of rotation of chemically peculiar stars Velocities of rotation of chemically peculiar stars

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985azh....62..947k&link_type=abstract

(Astronomicheskii Zhurnal, vol. 62, Sept.-Oct. 1985, p. 947-955) Soviet Astronomy (ISSN 0038-5301), vol. 29, Sept.-Oct. 1985, p.

Astronomy and Astrophysics

Astronomy

8

Angular Velocity, Peculiar Stars, Stellar Evolution, Stellar Rotation, Angular Momentum, Open Clusters, Stellar Composition

Scientific paper

An analysis of the velocities of rotation of 77 peculiar stars, members of open clusters and associations in the age range log t = 6.4-8.7, was made based on observations with the OZSP spectrograph of the 6-m telescope. It was concluded that there is no loss of angular momentum by peculiar stars in the process of gravitational contraction as they approach the zero-age main sequence and in the stage of evolution within the main sequence. A statistically significant difference was obtained in the velocities of rotation of peculiar stars in different zones of the Scorpio-Centaurus association: Stars of the core (t = 4 million yr) rotate faster on the average than stars in the outer zones of the association (t = 12 million yr).

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