Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.210..181m&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 210, no. 1-2, p. 181-183 (IAU Colloquium 134)
Astronomy and Astrophysics
Astrophysics
1
Main Sequence Stars, Power Spectra, Stellar Models, Stellar Oscillations, Stellar Spectra, Variable Stars, Stellar Mass, Stellar Spectrophotometry
Scientific paper
Target of a Stellar Photometry International (STEPHI) multisite campaign, the Delta Scuti star GX Pegasi has been found to oscillate with at least five simultaneous, close frequencies. Mode identification together within formation about the star that such an identification can provice are outlined. The mode identification is carried out by means of a comparison between the observed frequencies and the adiabatic frequencies of models appropriate to this star. Models that match GZ Peg's position in a Hertzsprung-Russell diagram have masses in the range 1.9 - 2 solar mass. When included, convective core overshoot is handled as in Maeder and Meynet (1989). According to these models, Gx Peg is rather evolved, main sequence star.
Baglin Annie
Goupil Marie Jo
Lebreton Yveline
Michel Eberhard
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