Measurement of spin in twenty binary systems

Details Measurement of spin in twenty binary systems Measurement of spin in twenty binary systems

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985acasn..26..226t&link_type=abstract

(Acta Astronomica Sinica, vol. 26, no. 3, 1985, p. 226-234) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 10, March

Astronomy and Astrophysics

Astrophysics

1

Binary Stars, Radial Velocity, Spectral Line Width, Stellar Rotation, Stellar Spectra, Angular Velocity, D Lines, Mass Ratios, Spin Dynamics, Synchronism

Scientific paper

The present measurements of 20 primaries and five secondaries in 20 binary systems indicate that 14 of the primaries and all five of the secondaries exhibit synchronous rotation. The star 62 Per is noted to have V sin i of 200 km/sec rather than of zero, as previously thought; results for other stars are in basic agreement with previous measurements. For TX UMa, the Na I D-line was stronger in the secondary than in the primary, leading to the deduction of a mass ratio of 0.32.

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