Orbital variability in the wind of the massive X-ray binary HD 153919/4U 1700-37

Details Orbital variability in the wind of the massive X-ray binary HD 153919/4U 1700-37 Orbital variability in the wind of the massive X-ray binary HD 153919/4U 1700-37

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...352..698h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 352, April 1, 1990, p. 698-708.

Astronomy and Astrophysics

Astrophysics

11

Interstellar Extinction, Stellar Orbits, Stellar Winds, Ultraviolet Spectra, X Ray Binaries, Data Reduction, Line Spectra, Spectral Line Width

Scientific paper

A set of forty high-dispersion IUE spectra of HD 153919, the Of-type primary in the 4U 1700-37 X-ray binary system, have been examined for evidence of orbital profile variability associated with the Hatchett-McCray effect. Although the effect is negligible in the resonance lines of C IV, Si IV, and N V, some subordinate lines show clear orbital changes. The variability in the absorption profile of N IV 1718, in particular, is shown to be in agreement with model calculations. The interstellar spectrum is studied, showing that highly ionized species can be maintained by the primary's radiation field alone.

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