Multicomponent structure of the spectral lines of the star P CYG

Details Multicomponent structure of the spectral lines of the star P CYG Multicomponent structure of the spectral lines of the star P CYG

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985afz....23..539m&link_type=abstract

(Astrofizika, vol. 23, Nov.-Dec. 1985, p. 539-550) Astrophysics (ISSN 0571-7132), vol. 23, no. 3, May 1986, p. 684-691. Translat

Astronomy and Astrophysics

Astrophysics

6

Absorption Spectra, Radial Velocity, Spectrum Analysis, Stellar Spectra, Variable Stars, Cygnus Constellation, High Dispersion Spectrographs, Stellar Mass Ejection

Scientific paper

On the basis of a series of high-dispersion spectrograms of P Cygni the authors have concluded that there exists a relatively slowly varying background profile of the absorption lines (characteristic time 100d - 120d) and a structure of some rapidly varying small components (characteristic time some days). The fine structure is caused, most probably, by the inhomogeneity of matter outflow from P Cygni. The features of the background profile (e.g. the maximum of the whole absorption component) have a periodic trend from initial Doppler shift to the higher shift values with a rather sharp restoration of the initial state.

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