An abrupt decrease in the rotational period of the chemically peculiar magnetic star CU Virginis

Details An abrupt decrease in the rotational period of the chemically peculiar magnetic star CU Virginis An abrupt decrease in the rotational period of the chemically peculiar magnetic star CU Virginis

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...339..822p&link_type=abstract

Astronomy and Astrophysics, v.339, p.822-830 (1998)

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30

Stars: Chemically Peculiar, Stars: Variables: Other, Stars: Rotation, Stars: Individual: Cu Vir

Scientific paper

Spectroscopic and photometric observations of the chemically peculiar star CU Vir over 40 years show that the period of variations decreased by 0.005 % between 1983-1987. The assumption of the rigid rotator model for this star implies an abrupt change of the rotation rate. We find no spectroscopic evidence that the star is a close binary, ruling out a possibility that the period decrease is caused by the mass exchange.

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