Period Changes and a Secondary Pulsation in DY Pegasus

Details Period Changes and a Secondary Pulsation in DY Pegasus Period Changes and a Secondary Pulsation in DY Pegasus

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...20111707i&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #117.07; Bulletin of the American Astronomical Society, Vol. 34, p.1296

Astronomy and Astrophysics

Astronomy

Scientific paper

We present an analysis of unreported times of maximum light for the dwarf Cepheid (High Amplitude Delta Scuti Star) variable star DY Pegasus. We find evidence for sudden period breaks from the archival observations and the new data. Due to the greater accuracy of the CCD observations employing differential ensemble photometry, we have been successful in the detection of a low-amplitude secondary pulsation in hte light curve of DY Peg. We present a discussion of this secondary frequency.

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