Physical parameters of the Centaurus X-3 system

Details Physical parameters of the Centaurus X-3 system Physical parameters of the Centaurus X-3 system

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...195..705o&link_type=abstract

Astrophysical Journal, vol. 195, Feb. 1, 1975, pt. 1, p. 705-707.

Astronomy and Astrophysics

Astrophysics

29

Binary Stars, O Stars, Stellar Spectra, X Ray Sources, Absorption Spectra, Astronomical Models, Astronomical Spectroscopy, Emission Spectra, Line Spectra, Spectrum Analysis, Stellar Mass

Scientific paper

Photographic spectra of Cen X-3 show that the primary star has a spectral type near O6.5 with weak, variable emission at 4640 and 4686 A. No orbital motion of the emission or absorption lines is detected; for the latter the upper limit is about plus or minus 50 km/sec. Analysis of the available data indicates that the primary is a factor of 2-3 less massive than expected from normal evolutionary models while the X-ray source has a mass near 1.5 times the solar mass.

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