Mass limits for the Centaurus X-3 system

Details Mass limits for the Centaurus X-3 system Mass limits for the Centaurus X-3 system

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...192l.139a&link_type=abstract

Astrophysical Journal, vol. 192, Sept. 15, 1974, pt. 2, p. L139, L140.

Astronomy and Astrophysics

Astrophysics

29

Early Stars, Eclipsing Binary Stars, Pulsars, Stellar Mass, Companion Stars, Light Curve, Limb Darkening, Orbit Calculation, X Ray Sources

Scientific paper

Constraints on the mass of Cen X-3 based on the observed amplitude of the optical light curve are discussed. A 2 sigma lower limit of 0.6 solar mass is derived, assuming corotation and the interpretation of the ellipsoidal light variations as caused by gravity- and limb-darkening effects. Including the constraints imposed by the eclipse duration, it is found that the mass of Cen X-3 is equal to 0.6 to 1.1 solar mass, while the mass of its optical companion is equal to 16.5 to 18.5 solar masses. The sensitivity of the derived masses to the assumed geometry is demonstrated.

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