The spectroscopic binary Scorpius X-1

Details The spectroscopic binary Scorpius X-1 The spectroscopic binary Scorpius X-1

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...201l..65c&link_type=abstract

Astrophysical Journal, vol. 201, Oct. 15, 1975, pt. 2, p. L65-L68. NSF-supported research.

Astronomy and Astrophysics

Astrophysics

90

Astronomical Spectroscopy, Binary Stars, Stellar Evolution, X Ray Stars, Emission Spectra, Hydrogen Clouds, Line Spectra, Orbital Elements, Radial Velocity, X Ray Sources

Scientific paper

Recent spectroscopic observations of Sco X-1 show conclusively that orbital velocity variations of about 0.787 days and a range of about 120 km per sec are present in both the He II and H emission lines. The most probable masses are less than 2 solar masses for each star. It is suggested that the nondegenerate companion is somewhat evolved from the main sequence.

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