Radial and Nonradial Oscillations of 63 Her (HD155514 = HR6391)

Details Radial and Nonradial Oscillations of 63 Her (HD155514 = HR6391) Radial and Nonradial Oscillations of 63 Her (HD155514 = HR6391)

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002tjph...26..185c&link_type=abstract

Turkish Journal of Physics, vol. 26, Issue 3, p.185-192

Physics

Stars: 63 Her, Pulsations, Evolution

Scientific paper

An attempt has been made toward explaining the observed frequencies in 63 Her. A sequence of evolutionary models have been calculated up to a point where stellar parameters match the observed luminosity and effective temperature of 63 Her. Radial and nonradial oscillations frequencies were obtained for a series of masses 1.85, 1.90 and 1.95 M&sun; and eigth models which represent best the pulsations of 63 Her are given in this paper. Calculations are restricted to low harmonic degrees ( l= 0,1,2,3 ). Six of the eigth observed frequencies quoted in literature were obtained. These we obtained for the model of mass 1.90 M&sun;. The observationally measured frequency 220.7 m Hz, which is classified as a second harmonic radial oscillation, and five of the observed nonradial modes were obtained at the harmonic degree l=3. The difference between the observed and calculated frequencies are (nn/l,c - nobs)= 0.3, 0.8, 0.7, 0.2, and 0.7 m Hz with n/l= -15/3, -12/3, -9/3, -7/3, -3/3, respectively.

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