Radial velocities of Scorpius X-1

Details Radial velocities of Scorpius X-1 Radial velocities of Scorpius X-1

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...197..467c&link_type=abstract

Astrophysical Journal, vol. 197, Apr. 15, 1975, pt. 1, p. 467-469. NSF-supported research.

Astronomy and Astrophysics

Astrophysics

4

Emission Spectra, Radial Velocity, Stellar Spectra, X Ray Sources, Astronomical Models, Binary Stars, Carbon, H Lines, Helium Ions

Scientific paper

Radial velocity and intensity measurements are presented for the following emission lines of Scorpius X-1: He II 4686 A, the C III blend near 4650 A, H beta, and H alpha. Analysis of these data suggests that a periodicity near 0 d .27 may be present, but our data do not confirm the periods (3 d .931, 3 d .7400, and 0 d .7873) recently suggested. If the velocity variation represents orbital motion, a model similar to an old nova is inferred. The X-ray flux might be accounted for by a rapid rate of mass transfer.

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