Narrow-band photometric periods in SS 433

Details Narrow-band photometric periods in SS 433 Narrow-band photometric periods in SS 433

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...269..605a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 269, June 15, 1983, p. 605-612. Research supported by the Alfred P. Sloan F

Astronomy and Astrophysics

Astrophysics

31

Eclipsing Binary Stars, Emission Spectra, Stellar Mass Ejection, Stellar Spectrophotometry, Fourier Analysis, H Alpha Line, Periodic Variations, Precession

Scientific paper

The unusual behavior of SS 433 is normally ascribed to the ejection of two narrow, collimated jets of matter from a compact star at 0.26c. According to most models, the jets are ejected transverse to an extended accretion disk, whose plane precesses with a 164 day period, thus modulating the observed jet velocity. It is of some importance that evidence independent of the kinematic interpretation of Doppler-shift data be found to confirm the ejected jet, precessing disk model. The present investigation provides observations of narrow-band photometric variations in SS 433 which constitute additional evidence, independent of the kinematic model, for the existence of the disk and its role in the orientation of the jets. The photometry obtained reveals four distinct and highly significant periods in SS 433, at 6.5, 13, 81, and 162 days.

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