P Cygni stars as a intermediate stage between red supergiants and Wolf-Rayet stars

Details P Cygni stars as a intermediate stage between red supergiants and Wolf-Rayet stars P Cygni stars as a intermediate stage between red supergiants and Wolf-Rayet stars

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...123l...8l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 123, no. 2, July 1983, p. L8-L10.

Astronomy and Astrophysics

Astrophysics

32

B Stars, Red Giant Stars, Stellar Evolution, Supergiant Stars, Wolf-Rayet Stars, Abundance, Hertzsprung-Russell Diagram, Stellar Magnitude, Stellar Mass Ejection

Scientific paper

From an accurate determination of the location of P Cygni in the HR diagram and from a comparison with evolutionary tracks the authors argue that P Cygni has been a red supergiant and is now on its way to become a WN star. The P Cygni type star AG Car already shows abundance anomalies which are typical for WN stars. The peculiar light history of P Cygni can be explained by an inhomogeneous dust cloud which temporarily obscured the star and produced its red colour in the seventeenth century.

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