The nature of SS 433 spectral variability with a 6-day period (June-August, 1981)

Details The nature of SS 433 spectral variability with a 6-day period (June-August, 1981) The nature of SS 433 spectral variability with a 6-day period (June-August, 1981)

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64..785k&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, July-Aug. 1987, p. 785-802. In Russian.

Astronomy and Astrophysics

Astronomy

6

Binary Stars, Periodic Variations, Spectral Energy Distribution, Spectrum Analysis, Stellar Evolution, Stellar Spectrophotometry, H Alpha Line, Helium, Plasma Jets, Radial Velocity, Relativistic Theory, Spectral Resolution

Scientific paper

New spectral data (≡280 spectra) for the object SS433 obtained during 35 nights in the summer of 1981 with the 1000-channel spectrophotometer of the 6-meter telescope within the range λλ5300 - 7900 Å with a resolution of ≡4 Å are analysed. The behaviour of hydrogen and helium relativistic line profiles with time is studied and the following parameters for them are determined: equivalent widths Wλ, central intensities Rc, halfwidths Δλ(1/2) and radial velocities z. A detailed study has been given to the radial velocity variations in the main components of relativistic hydrogen lines Hα and Hβ with a 6-day (nutation) period.

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