Computer Science
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990crasg...7....1d&link_type=abstract
Academie des Sciences (Paris), Comptes Rendus, Serie Generale, La Vie des Sciences (ISSN 0762-0969), vol. 7, no. 1, Jan.-Feb. 19
Computer Science
Stellar Atmospheres, Stellar Gravitation, Stellar Luminosity, Stellar Mass Ejection, Supergiant Stars, Gravity Waves, Hertzsprung-Russell Diagram, Red Giant Stars, Stellar Mass, Stellar Temperature
Scientific paper
It is pointed out that there is an upper limit to the brightness of stars, beyond which no star can exist. It is shown that this limit coincides with the brightness limit for which the effective acceleration (i.e., the sum of the effects of gravitation and forces due to thermal, radiative, and turbulent pressure directed outward) drops to a very small value. In atmospheres of the most extreme stars, gravity waves can occur with very long wavelengths and elevated periods. It is suggested that it is these waves that are responsible for the instabilities of supergiant and hypergiant stars.
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