Mathematics – Logic
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...18710212b&link_type=abstract
American Astronomical Society, 187th AAS Meeting, #102.12; Bulletin of the American Astronomical Society, Vol. 27, p.1430
Mathematics
Logic
1
Scientific paper
We present radial and low-degree nonradial pulsation frequencies for a grid of evolutionary delta Scuti models including updated physics and OPAL (Iglesias & Roger 1992) opacities. These opacities significantly affect the evolutionary tracks, and therefore our interpretation of the mass and evolutionary state of delta Scuti stars. We discuss frequency trends with changes in metallicity and convective core size. We suggest seismological model fits and mode identifications for the 19 probable frequencies reported for the delta Scuti star FG Vir, and the 13 frequencies discovered for the less-evolved delta Scuti star CD-24(deg) 7599. We discuss the uniqueness of our model fits, mode identifications, and the potential for asteroseismology of delta Scuti stars. As more observations of delta Scuti stars with dozens of modes become available, discrepancies between model frequency predictions and observations will provide clues to further refinements in model physics.
Bradley Paul Andrew
Guzik Joyce Ann
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