Radial pulsation of less-massive yellow supergiants. II - FG SGE models

Details Radial pulsation of less-massive yellow supergiants. II - FG SGE models Radial pulsation of less-massive yellow supergiants. II - FG SGE models

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.116..401a&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 116, no. 2, Nov. 1985, p. 401-409.

Statistics

Computation

15

Dynamic Stability, Periodic Variations, Stellar Color, Stellar Mass, Stellar Oscillations, Supergiant Stars, Computational Astrophysics, Linear Equations, Nonlinear Equations, Stellar Luminosity, Stellar Temperature

Scientific paper

In an effort to understand the pulsation behavior of FG Sge, linear and nonlinear computations have been conducted for models of 0.8 solar masses and either 10,000 or 20,000 solar luminosities. In the former case, the models show that the third-overtone instability extends to 7400 K and still exhibits large positive growth rates; in the latter case, the fundamental blue edge is shifted from 5700 K to 7000 K, but the damping of the mode is small. The third overtone has large positive growth rates in this region.

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