Cyclicities in the light variations of S Doradus stars III. P Cygni

Details Cyclicities in the light variations of S Doradus stars III. P Cygni Cyclicities in the light variations of S Doradus stars III. P Cygni

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...376..224d&link_type=abstract

Astronomy and Astrophysics, v.376, p.224-231 (2001)

Astronomy and Astrophysics

Astrophysics

7

Stars: Individual: P Cygni, Stars: Variables, Stars: Oscillations, Stars: Supergiants

Scientific paper

On the basis of new photometric observations and archived data published since 1907, we discuss the light variations of P Cygni. We conclude that there are alpha Cygni-type microvariations with a stable (pulsation) quasi-period of 17.3 days. There are also longer cycles of variation with P ~ 100 d, so-called 100 d-type micro-variations, and with P ~ 1500-1600 d, a short S Dor-type phase.

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