Observation of gradual brightening of P Cygni due to stellar evolution

Details Observation of gradual brightening of P Cygni due to stellar evolution Observation of gradual brightening of P Cygni due to stellar evolution

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.355..422d&link_type=abstract

Nature (ISSN 0028-0836), vol. 355, Jan. 30, 1992, p. 422, 423.

Physics

30

Astronomical Photometry, Stellar Evolution, Stellar Magnitude, Variable Stars, Light Curve, Stellar Models, Stellar Physics

Scientific paper

An analysis of modern and historical photometric measurements of the star P Cygni is reported. A steady change of apparent brightness is found, and it is argued that it is due to evolution of the star. The change is about twice as fast as standard models predict, but the difference may be due to misestimation of the star's mass or inadequate treatment of atmospheric expansion in the stellar models.

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