IUE observations of X-ray sources - HD153919 /4U1700-37/, HDE226868 /Cyg X-1/, HZ HER /Her X-1/

Details IUE observations of X-ray sources - HD153919 /4U1700-37/, HDE226868 /Cyg X-1/, HZ HER /Her X-1/ IUE observations of X-ray sources - HD153919 /4U1700-37/, HDE226868 /Cyg X-1/, HZ HER /Her X-1/

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978natur.275..400d&link_type=abstract

Nature, vol. 275, Oct. 5, 1978, p. 400-403.

Physics

53

Binary Stars, Interstellar Matter, Iue, Stellar Spectra, Ultraviolet Spectroscopy, X Ray Sources, Absorption Spectra, Abundance, Eclipsing Binary Stars, H Ii Regions, Lyman Alpha Radiation, Photoionization, Spectral Resolution, Stellar Envelopes, Stellar Winds

Scientific paper

The first UV spectroscopic measurements of binary X-ray sources with IUE show highly variable emission from a photoionized plasma in the object HZ Her, and give evidence for localized circumsystem material in the binary source Cygnus X-1. In addition, a substantial stellar wind is found in one of the brightest identified X-ray sources HD153919. This system may be surrounded by an extensive H II region unusual in its content of high excitation ion species.

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