The Radial Velocity and Binarity of HD153919 4U:1700-37

Details The Radial Velocity and Binarity of HD153919 4U:1700-37 The Radial Velocity and Binarity of HD153919 4U:1700-37

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.264..935s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 264, NO. 4/OCT15, P. 935, 1993

Astronomy and Astrophysics

Astronomy

5

Binaries: Spectroscopic - Stars: Individual: Hd 153919 - Ultraviolet: Stars - X-Rays: Stars

Scientific paper

New measurements of radial velocities from high-resolution lUE spectra of the massive X-ray binary HD 153919 give a velocity amplitude that is markedly smaller than that found in earlier studies, namely 5 km s-1, compared with previous values of around 20 km s-1. If such measurements relate to orbital motion, then the inferred component masses may need considerable revision to a more massive O star and/or a less massive compact companion. Alternative mechanisms to generate the velocity variations may need to be invoked.

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