Abstract
Some tens of harmonic components are found in the moving lines of SS 433, leaving a standard deviation of 0.002 in Z units, that is comparable to the observational error.
Ten harmonics appear anticorrelated in the two branches, among which those at 80, 155, and 1500 days are also strong. Their behaviour indicates changing structure in the ejecting mechanism.
No secular change is occurring in the precessional 163-day period beyond the estimated error of 5×10−5 d−1. No periodicity occurs in beam velocity. One quarter of cases of (Z1+Z2) are found outside their mean value by more than 5σ. This implies either variable beam velocity or absence of strict antiparallelism.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Ciatti, F., Mammano, A., and Vittone, A.: 1981,Astron. Astrophys. 94, 251.
Ciatti, F., Mammano, A., Iijima, T., and Vittone, A.: 1983,Astron. Astrophys. Suppl. Ser. 52, 443.
Cogotti, R., Doo Jong, S., and Ruffini, R.: 1983, preprint.
Milgrom, M.: 1980,Astron. Astrophys. 87, L15.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Frasca, S., Ciatti, F. & Mammano, A. Periods ranging from 5 to 1500 days in the anticorrelated moving lines of SS 433. Astrophys Space Sci 99, 329–333 (1984). https://doi.org/10.1007/BF00650257
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00650257