Observational characteristics of simple radial and non-radial Beta Cephei models

Details Observational characteristics of simple radial and non-radial Beta Cephei models Observational characteristics of simple radial and non-radial Beta Cephei models

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.180..551s&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 180, Sept. 1977, p. 551-565.

Astronomy and Astrophysics

Astronomy

37

Stellar Models, Variable Stars, Astronomical Models, Hot Stars, Oscillations, Radial Velocity, Spectrum Analysis, Stellar Rotation

Scientific paper

Light, color, and radial-velocity variations are calculated for radially oscillating models applicable to Beta Cephei stars. Tentative nonradial calculations are also presented. A comparison with published data on light, color, and radial-velocity ranges for these variables is made. The data suggest the presence of both radial and nonradial oscillations in the Beta Cephei stars. Line-profile variations in the star 12 Lac are compared with the predictions of (l,m)=(2,-2) and (2,0) oscillations, and reasonable agreement is obtained. However, a full hydrodynamic treatment of the oscillations will probably be required to obtain satisfactory models of radial-velocity variations.

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