Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981nyasa.375..403m&link_type=abstract
(AAS, American Physical Society, NASA, et al., Texas Symposium on Relativistic Astrophysics, 10th, Baltimore, MD, Dec. 15-19, 19
Astronomy and Astrophysics
Astrophysics
14
Binary Stars, Emission Spectra, Stellar Spectra, Variable Stars, X Ray Sources, Kinematics, Optical Polarization, Radial Velocity, Radio Stars, Spectral Line Width, X Ray Stars
Scientific paper
Papers presented at the Tenth Texas Symposium on Relativistic Astrophysics concerning SS 433 are summarized and the current status of the unique moving-emission-line object is reviewed. Radial velocity observations taken from June 1978 to December 1980 are shown to fit a simple five-parameter kenimatic model with a best-fit period of 163.65 days, however large deviations from the model are found taking up extended periods of time. Evidence of variable optical polarization amplitudes is discussed which apparently exhibits a 164-day phase dependence, and the implications of radio observations which show a time-variable radio structure for the twin-jet model and for the understanding of source parameters are pointed out. Finally, an assessment is presented of successes and remaining problems in the understanding of the mechanisms of SS 433.
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