AH CANCRI - A contact binary in M67

Details AH CANCRI - A contact binary in M67 AH CANCRI - A contact binary in M67

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..729w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 186, Mar. 1979, p. 729-741.

Astronomy and Astrophysics

Astronomy

21

Eclipsing Binary Stars, Galactic Clusters, Late Stars, Stellar Spectrophotometry, Chemical Composition, Hertzsprung-Russell Diagram, Light Curve, Radial Velocity, Stellar Evolution

Scientific paper

The W UMa-type contact binary system AH Cnc, which is a member of the old galactic cluster M67, has been studied spectroscopically and photometrically. Estimates of masses, radii, effective temperature and luminosity of AH Cnc have been derived from these data and from cluster membership considerations. The results suggest that AH Cnc is a typical evolved W-type W UMa contact system, although whether the system has evolved as a contact system or has recently become so, could not be determined. The properties of AH Cnc are similar to those of TX Cnc in Praesepe. Information provided by the existence of a gap in the Hertzsprung-Russell diagram for M67 has been coupled with the AH Cnc results to provide further estimates of the chemical composition of M67.

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