Photometry of SS 433 over 7 years - Study of two periodicities

Details Photometry of SS 433 over 7 years - Study of two periodicities Photometry of SS 433 over 7 years - Study of two periodicities

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...317..824m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 317, June 15, 1987, p. 824-829.

Astronomy and Astrophysics

Astrophysics

13

Eclipsing Binary Stars, Periodic Variations, Statistical Analysis, Stellar Spectrophotometry, Variable Stars, Beat Frequencies, Fourier Analysis, Power Spectra

Scientific paper

The photometric data of SS 433 which now extend over seven years are multifrequency analyzed. The analysis shows the long-known interdependence between the two periodicities of 13 and 162 days, associated with the frequencies f162 and f13 and their harmonics. In addition, the authors detected unambiguously the 2f13 + f162 frequency as the strongest beat periodicity. The 2f13 + 2f162 frequency, which was expected to be the frequency of the mass transfer rate modulation, was only marginally detected. This result can be interpreted in the framework of the nodding model of a precessing object.

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