The radial velocity curve of HD153919 (4U1700-37) revisited

Details The radial velocity curve of HD153919 (4U1700-37) revisited The radial velocity curve of HD153919 (4U1700-37) revisited

2003-07-07

arxiv.org/abs/astro-ph/0307119v1

Astron.Astrophys.407:685-690,2003

Astronomy and Astrophysics

Astrophysics

6 pages, latex, figure included, Astronomy & Astrophysics, in press

Scientific paper

10.1051/0004-6361:20030962

We have re-analysed all available high-resolution ultraviolet IUE spectra of the high-mass X-ray binary HD153919/4U1700-37. The radial velocity semi-amplitude of 20.6 +/- 1.0 km/s and orbital eccentricity of 0.22 +/- 0.04 agree very well with the values obtained earlier from optical spectra. They disagree with earlier conclusions for the same data reduced by Heap & Corcoran (1992) and by Stickland & Lloyd (1993).

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