Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.228..293s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 228, Sept. 15, 1987, p. 293-303.
Astronomy and Astrophysics
Astronomy
41
Binary Stars, Stellar Spectrophotometry, Visible Spectrum, X Ray Spectra, Accretion Disks, Exosat Satellite, Light Curve, Spectrum Analysis, Stellar Mass Ejection
Scientific paper
The authors report on the results of coordinated X-ray and optical observations of SS433 made over one binary cycle. The optical light curve shows SS433 to be in a typical state, with two unequal minima separated by 0.5 in phase. The X-ray observations show reduced intensity coincident with the deeper, primary optical minimum. The authors interpret this result, which was suggested in the earlier observations of Grindlay et al. (1984) as the eclipse of the X-ray emitting region by the optical star, thus confirming the optical minimum as the occultation of an accretion disc by the mass-losing star. The characteristics of the X-ray eclipse, when coupled with optical data and the discovery of Watson et al. (1986), that the X-ray emission is from the jets, then constrain the dimensions of all components of the system.
Brinkmann Wolfgang
Jugaku Jun
Kemp James C.
Kenson G. D.
Kraus Daniel J.
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