Nutation-like effects in SS 433

Details Nutation-like effects in SS 433 Nutation-like effects in SS 433

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...52..443c&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 52, June 1983, p. 443-453. Research supported by the Consigl

Astronomy and Astrophysics

Astronomy

8

Radio Sources (Astronomy), Stellar Evolution, Stellar Spectra, Variable Stars, X Ray Sources, Kinematics, Line Spectra, Nutation, Plasma Jets

Scientific paper

Recent spectroscopic observations of the 'moving' lines in SS 433 are subjected to a kinematical analysis using the assumption of outflowing antiparallel jets. An improved sample of 216 couples and red and blue-shifted lines is constructed for the kinematical analysis. The jet velocity values range between 0.22 and 0.30, and no periodicities were found in the data. Deviations of the ejection angle with line of sight from the smooth conical trend follow short periodicity with the strongest component of 6.28 d in a nutationlike pattern. The observed angles in jet direction range between 54 and 103 deg. Thus, by assuming that the ejection directions are antiparallel, a short time periodicity and variable amplitude through the precessional cycle appears in the derived jet direction angles.

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