The stellar seismology of epsilon Eridani

Details The stellar seismology of epsilon Eridani The stellar seismology of epsilon Eridani

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301..207g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 1, 1986, p. 207-212.

Astronomy and Astrophysics

Astrophysics

18

Stellar Cores, Stellar Models, Stellar Oscillations, Metallicity, Stellar Envelopes, Stellar Luminosity, Stellar Mass, Stellar Temperature

Scientific paper

This calculated p-mode oscillation spectrum of several stellar models of ɛ Eridani are compared with the observational data of Noyes et al. Specifically, models with different masses, metallicities, and mixing length parameters are constructed, and for each model the low-degree p-mode oscillation spectrum is calculated and its characteristic frequency spacing is compared with the observed value of 172 μHz. Of all the models constructed, the model with a mass of 0.80 M_sun;, Z = 0.02, mixing length parameter α = 1.00, an age of 11.5 Gyr, and a radius of 0.80 R_sun; best fits the observed luminosity, effective temperature, and oscillation data. The characteristic frequency spacing of the oscillation spectrum of this model is 170 μHz. It is concluded that the structure of this model must be very close to the actual physical structure of ɛ Eri.

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