Spectral variations of P Cygni

Details Spectral variations of P Cygni Spectral variations of P Cygni

Jan 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969cokon..65..203d&link_type=abstract

Communications of the Konkoly Observatory, No. 65 (Vol. VI, 1), p. 203-214 (1969)

Physics

Scientific paper

From a careful study of 35 high-dispersion spectrograms of P Cygni it is concluded that the spectroscopic data do not confirm the conclusion of Magalashvili and Kharadze that P Cygni is a W UMa type system. It is found that many of the absorption lines are double, the hydrogen absorption lines even triple. This is attributed to line formation in different shells. In the outer shell variations with a period of 114 days lead to observed radial velocity variations between - 180 and - 240 km/sec. A preliminary conclusion about the velocity field in the atmosphere of P Cygni is drawn.

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