Asynchronous rotation of the mass gaining component in the Algol-type binary TXUMa

Details Asynchronous rotation of the mass gaining component in the Algol-type binary TXUMa Asynchronous rotation of the mass gaining component in the Algol-type binary TXUMa

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008coska..38..538k&link_type=abstract

Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no. 3, p. 538-544.

Astronomy and Astrophysics

Astronomy

1

Stars: Close Binaries, Rotational Effect, Asynchronous Rotation, Tx Uma

Scientific paper

High-dispersion spectrograms of the interacting close binary TXUMa taken in 1969-73 around the primary minima were used to display the rotational effect of the mass gaining component. The resulting rotational velocity of the gainer is 70.8 ± 2.9 kms-1. The magnitude of the effect points to considerable over-synchronous rotation of the gainer due to direct impact of the gas flow from the loser component onto the surface of the gainer. Some aspects of the secular decrease of the orbital period of the system relevant to this finding are discussed, too.

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