Radial-velocity variations of Scorpius X-1 emission lines

Details Radial-velocity variations of Scorpius X-1 emission lines Radial-velocity variations of Scorpius X-1 emission lines

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206l..49b&link_type=abstract

Astrophysical Journal, vol. 206, May 15, 1976, pt. 2, p. L49-L52.

Astronomy and Astrophysics

Astrophysics

9

Binary Stars, Emission Spectra, Radial Velocity, X Ray Stars, Balmer Series, H Lines, Helium, Orbit Calculation, Velocity Distribution

Scientific paper

Radial-velocity measurements for the principal emission features in Sco X-1 spectrograms are discussed. Plots of the radial velocities of H-alpha, H-beta, and He II at 4686 A as a function of phase for the 0.787313-day period are presented. In spite of the large scatter in the data, the time-dependent behavior of the radial velocities for the Balmer lines appears to confirm the binary nature of Sco X-1. In contrast to a previous report, no periodic variation in the radial velocity of the He II line at 4686 A is observed.

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