New Whole Earth Telescope observations of CD-24 7599:steps towards Delta Scuti star seismology

Details New Whole Earth Telescope observations of CD-24 7599:steps towards Delta Scuti star seismology New Whole Earth Telescope observations of CD-24 7599:steps towards Delta Scuti star seismology

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dssn...10....4h&link_type=abstract

Delta Scuti Star Newsletter, Issue 10, p. 4

Physics

Scientific paper

92 hours of new Whole Earth Telescope observations have been acquired for the Delta Scuti star CD-24 7599. All the 7 pulsation modes reported by Handler et al. (1996, A&A 307, 529) are confirmed. However, significant amplitude variations, which are not caused by beating of closely spaced frequencies, occurred within two years. Analyzing the combined data of both WET runs, we detect 6 further pulsation modes, bringing the total number up to 13. We also examine our data for high-frequency pulsations similar to those exhibited by rapidly oscillating Ap stars, but we do not find convincing evidence for variability in this frequency domain.

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